Theoretical linear density, kg
STATE STANDARD OF THE UNION OF SSR
Decree State Committee USSR according to the standards of May 14, 1980 No. 2108, the validity period is established
from 01.01.83
until 01/01/88
The validity period is extended until 01.01.93, IUS 10-87
* Reprint with Change № 1 , approved v December 1984 G. (IUS 3 -85 )
This standard applies to low-carbon steel wire, cold-drawn, periodic profile class BP1 for reinforcing reinforced concrete structures.
(Modified edition. Amendment No. 2)
(Modified edition. Amendment No. 3)
1. BASIC PARAMETERS AND DIMENSIONS
Clause 1.1
(Modified edition. Rev. No. 2 )
Table 1
mm
|
Nominal wire diameter |
Nominal size a |
Limit deviations for size |
Depth of dents h |
Limit deviations for the depth of dents |
Nominal |
Limit deviations by step of dents |
Projection length b |
Limit deviations along the length of the protrusion |
|
- 0,09 |
||||||||
|
0,04 |
0,05 |
± 0,2 |
± 0,2 |
|||||
|
0,05 |
(Modified edition. Rev. No. 3)
Note. Nominal indentation pitch s and the radius of conjugation of the surface of the indentations with the protrusions R are reference values for the design of profiling tools and are not tested on wire.
(Modified edition. Amendment No. 2)
1.3 ... Radius of mating surface of indentations with protrusionsRfor wire of all diameters should be equal to (2.5 ± 0.5) mm.
Allowed relative displacement of opposite dents up to 0.5sand their location along the helical line of the wire axis.
(Modified edition. Amendment No. 2)
(Modified edition. Rev. No. 3 )
1.4 ... Size difference a and a 1 must not exceed the size tolerance range a.
(Modified edition. Amendment No. 2)
(Modified edition. Rev. No. 3)
Example of a symbolwire with a nominal diameter of 3.0 mm:
Wire 3 Bp1 GOST 6727-80.
(Modified edition. Amendment No. 2)
(Modified edition. Rev. No. 3)
2. TECHNICAL REQUIREMENTS
2.1 ... The wire must be manufactured in accordance with the requirements of this standard for technological regulations, approved in the prescribed manner. The wire must be made from wire rod according to OST 14-15-193-86.
(Modified edition. Rev. No. 2 )
2.2 ... The mechanical properties of the wire must correspond to those indicated in table. .
table 2
|
Nominal wire diameter, mm |
Breaking force R, rН(kgf) |
Force corresponding to the conventional yield strength P 0 ,2 , rН(kgf) |
Number of folds |
Relative extension d 100 , % |
(Modified edition. Amendment No. 2)
Notes:
1. Wire with normalized relative elongation is manufactured at the request of the consumer.
2. Allowed for wire of the first quality category in a batch of up to 5% of coils with a reduced breaking force of no more than 5%.
(Modified edition. Amendment No. 1)
(Modified edition. Amendment No. 2)
2.3 ... On the surface of the wire there should be no cracks, captivity, sunsets, shells.
Risks and scratches with a depth of no more than half are allowed marginal deviations by size a and a coating of rust.
(Modified edition. Rev. No. 3)
2.4 ... The wire is manufactured in coils weighing 500 - 1500 kg. It is allowed to manufacture wire in coils weighing 20 - 100 kg. Each skein should consist of one piece of dragging. The wire should be rolled into coils in undisturbed rows.
(Modified edition. Amendment No. 2)
2.5 ... Linear density of the wire must correspond to that indicated in table. .
(Modified edition. Rev. No. 2 )
Table 3
Estimated area cross section and theoretical linear density of the wire are given in the reference appendix.
(Modified edition. Amendment No. 2)
(Modified edition. Rev. No. 3)
3. RULES OF ACCEPTANCE
3.1 ... Wire is accepted in batches. The lot should consist of wire, drawn up with one quality document, which should indicate:
trademark or name and trademark of the manufacturer;
symbol wire;
test results;
number of skeins;
batch number;
net weight of the batch;
the image of the State Quality Mark for the wire of the highest quality category.
(Modified edition. Amendment No. 2)
(Modified edition. Rev. No. 3)
3.2 ... The size a, size difference a and a 1 and the surface quality of the wire is checked on each coil.
(Modified edition. Rev. No. 3).
3.3 ... For check mechanical properties wire and wire profile parameters from the batch should be selected 3% of coils, but not less than 5 coils.
(Modified edition. Amendment No. 2)
3.4 ... Upon receipt of unsatisfactory test results for at least one of the indicators, repeated tests are carried out on a doubled sample. results re-check apply to the entire party.
4. TEST METHODS
4.1 ... For each type of test, one sample is taken from one end of the coil.
4.2 ... The surface quality of the wire is monitored with the naked eye.
4.3 ... Dimensions (edit) a and a 1 wire is measured with a micrometer GOST 6507 -78.
Size difference a and a 1 is defined as the arithmetic mean of three measurements taken over a 1 m long section.
(Modified edition. Amendment No. 2)
(Modified edition. Rev. No. 3)
4.4 ... The parameters of the wire profile are determined as the arithmetic mean of three measurements taken over a 1 m section on each side.
Depth of dents hmeasured by a micrometer in accordance with GOST 6507-78, equipped with a special heel (mandatory attachment).
Projection length b 1 (measured by reference microscope MPB-2, manufactured according to technical documentation.
In case of disagreement in measuring the parameters of the wire profile, the control is carried out according to the linear density of the wire (table).
Linear density of the wire is determined as the quotient of dividing the mass of two samples 1 m long, weighed with an error of up to 0.001 kg, by their length, measured with an error of up to 0.001 m.
(Modified edition. Amendment No. 2)
(Modified edition. Rev. No. 3)
4.5 ... The tensile test of the wire is carried out according to GOST 12004-81.
(Modified edition. Amendment No. 2)
4.6 ... Wire bend test is carried out according to GOST 1579-80 ... Wire with a diameter of 3.0 and 4.0 mm is tested on rolls with a diameter of 20 mm, and with a diameter of 5.0 mm - on rolls with a diameter of 30 mm.
When testing the wire, the specimen is clamped so that the indentations face the jaws of the instrument.
(Modified edition. Amendment No. 2)
4.7 ... The depth of marks and scratches is determined by removing it by stripping it with subsequent comparative measurement in the cleaned and uncleaned places.
(Modified edition. Amendment No. 2)
(Modified edition. Rev. No. 3)
5. PACKAGING, LABELING, TRANSPORTATION AND STORAGE
5.1 ... Each skein weighing 500 - 1500 kg should be evenly tied around the circumference in at least four places, and a skein weighing 20 - 100 kg - in at least three places.
At the request of the consumer, a skein weighing 500 - 1500 kg must have intermediate ties located inside the skein.
Wire rod according to OST 14-15-193-86, GOST 4231-70 or heat-treated wire from the normative and technical documentation are used as binding materials.
The ends of the skein should be neatly arranged and easily found.
(Modified edition. Amendment No. 2)
(Modified edition. Amendment No. 4)
5.1 a ... Coil wires weighing 20 - 100 kg are tied into bays.
Technicalconditions
Cold-drawn low-carbon steel wire for reinforced concrete.
Specifications
Date of introduction 1983-01-01
Information data
1. DEVELOPED AND INTRODUCED by the Ministry of Ferrous Metallurgy of the USSR
DEVELOPERS E.M. Kireev, K.G. Zalyalyutdinov, H.N. Belalov, N.A. Galkina, T.A. Korshunova, K.V. Mikhailov and V.I. Bondarenko, V.M. Skubko
2. APPROVED AND PUT INTO EFFECT by the Decree of the USSR State Committee for Standards dated 05.15.80 No. 2108
3. REPLACE GOST 6727-53
4. REFERENCE REGULATORY AND TECHNICAL DOCUMENTS
| Designation of NTD referenced | Item, sub-item, application number |
| GOST 1579-93 | 4.6 |
| GOST 6507-90 | 4.3, 4.4, appendix 1 |
| GOST 12004-81 | 4.5 |
| GOST 14192-96 | 5.6 |
| GOST 15102-75 | 5.3 |
| GOST 15150-69 | 5.4 |
| GOST 15846-79 | 5.5 |
| GOST 20435-75 | 5.3 |
| GOST 21650-76 | 5.1a |
| GOST 22225-76 | 5.3 |
| GOST 24597-81 | 5.1a |
| OST 14-15-193-86 | 2.1, 5.1 |
5. The limitation of the validity period has been removed according to protocol 2-93 of the Interstate Council for Standardization, Metrology and Certification (IUS 2-93)
6. REPUBLICATION (September 1998) with Amendments No. 1, 2, 3, 4, approved in December 1984, June 1987, October 1988, February 1990 (IUS 3-85, 10-87 , 1-89, 5-90)
This standard applies to low-carbon steel wire, cold-drawn periodic profile class Bp-1 for reinforcement reinforced concrete structures.
1. BASIC PARAMETERS AND DIMENSIONS
1.1. (Deleted, Amendment No. 3).
1.2. The main parameters and dimensions of the wire must correspond to those indicated in table. 1.
Wire size designations are shown in the drawing.
Table 1 mm
| Nominal wire diameter | Nominal size a | Limit deviations for size a | Depth of dents h | Limit deviations to the depth of dents | Nominal indentation pitch s | Limit deviations by step of dents | Projection length b | Limit deviations along the length of the protrusion |
| +0,03 | ||||||||
| 3,0 | 3,0 | -0,09 | 0,15 | 2,0 | 0,6 | |||
| +0,04 | ||||||||
| 4,0 | 4,0 | -0,12 | 0,20 | 2,5 | 0,8 | |||
| +0,05 | +0,05 | ± 0.2 | ± 0.2 | |||||
| 5,0 | 5,0 | -0,15 | 0,25 | -0,02 | 3,0 | 1,0 |
Note. Nominal indentation pitch s and the radius of conjugation of the surface of the indentations with the protrusions R are reference values for the design of profiling tools and are not tested on wire.
(Modified edition, Amendments No. 2, 3).
1.3. Radius of mating surface of indentations with protrusions R for wire of all diameters should be equal to (2.5 ± 0.5) mm.
Allowed relative displacement of opposite dents up to 0.5 S and their location along the helical line of the wire axis.
1.4. Size difference a and a1 must not exceed the size tolerance range a .
An example of a symbol for a wire with a nominal diameter of 3.0 mm:
Wire 3 Вр1 GOST 6727-80.
2. TECHNICAL REQUIREMENTS
2.1. The wire must be manufactured in accordance with the requirements of this standard for technological regulations, approved in the prescribed manner.
The wire is made from wire rod according to OST 14-15-193.
2.2. The mechanical properties of the wire must correspond to those indicated in table. 2.
table 2
| Nominal wire diameter, mm | Breaking force P, gN (kgf) | Force corresponding to the conventional yield strength P0.2, gN (kgf) | Number of folds | Elongation d 100,% |
| not less | ||||
| 3,0 | 39(400) | 35(355) | 4 | 2,0 |
| 4,0 | 71(720) | 62(630) | 2,5 | |
| 5,0 | 106(1085) | 97(985) | 3,0 | |
(Modified edition, Amendments No. 1, 3).
2.3. On the surface of the wire there should be no cracks, captivity, sunsets, shells.
Risks and scratches with a depth of no more than half of the maximum deviations per size are allowed a and a coating of rust.
(Modified edition, Amendment No. 3).
2.4. The wire is manufactured in coils weighing 500-1500 kg. It is allowed to manufacture wire in coils weighing 20-100 kg. Each coil should consist of one piece of wire. The wire should be rolled into coils in undisturbed rows.
(Modified edition, Amendment No. 2).
2.5. Linear density of the wire must correspond to that indicated in table. 3.
Table 3
The calculated cross-sectional area and theoretical linear density of the wire are given in Appendix 2.
(Modified edition, Amendments No. 2, 3).
3. RULES OF ACCEPTANCE
3.1. Wire is accepted in batches. The lot must consist of wire of the same diameter, drawn up in one quality document, which should indicate:
Test results;
Number of skeins;
Batch number;
Net weight of the batch;
(Modified edition, Amendments No. 1, 2, 3).
3.2. The size a, size difference a and a1 and the surface quality of the wire is checked on each coil.
(Modified edition, Amendment No. 3).
3.3. To check the mechanical properties of the wire and the parameters of the wire profile, 3% of the coils should be selected from the batch, but not less than 5 coils.
(Modified edition, Amendment No. 2).
3.4. Upon receipt of unsatisfactory test results for at least one of the indicators, repeated tests are carried out on a doubled sample. The retest results are valid for the entire batch.
4. TEST METHODS
4.1. For each type of test, one sample is taken from one end of the coil.
4.2. The surface quality of the wire is monitored with the naked eye.
4.3. Dimensions (edit) a and a1 wires are measured with a micrometer in accordance with GOST 6507.
Size difference a and a1 is defined as the arithmetic mean of three measurements taken over a 1 m long section.
(Modified edition, Amendments No. 2, 3).
4.4. The parameters of the wire profile are determined as the arithmetic mean of three measurements taken over a 1 m section on each side.
Depth of dents h measured by a micrometer in accordance with GOST 6507, equipped with a special heel (Appendix 1).
Projection length b measured by reference microscope MPB-2, manufactured according to technical documentation.
In case of disagreement in measuring the parameters of the wire profile, the control is carried out according to the linear density of the wire (Table 3).
Linear density of the wire is determined as the quotient of dividing the mass of two samples 1 m long, weighed with an error of up to 0.001 kg, by their length, measured with an error of up to 0.001 m.
(Modified edition, Amendments No. 2, 3).
4.5. The tensile test of the wire is carried out in accordance with GOST 12004.
4.6. The bend test of the wire is carried out in accordance with GOST 1579. Wire with a diameter of 3.0 and 4.0 mm is tested on rolls with a diameter of 20 mm, and with a diameter of 5.0 mm on rolls with a diameter of 30 mm.
When testing the wire, the specimen is clamped so that the indentations face the jaws of the instrument.
4.5, 4.6. (Modified edition, Amendment No. 2).
4.7. The depth of marks and scratches is determined by removing them by cleaning them with subsequent comparative measurement in the cleaned and uncleaned places.
(Modified edition, Amendments No. 2, 3).
5. PACKAGING, LABELING, TRANSPORTATION AND STORAGE
5.1. Each skein weighing 500-1500 kg should be evenly tied around the circumference in at least four places, and a skein weighing 20-100 kg - in at least three places.
At the request of the consumer, a skein weighing 500-1500 kg must have intermediate ties located inside the skein.
Wire rod according to OST 14-15-193 or heat-treated wire according to normative and technical documentation is used as binding materials.
The ends of the skein should be neatly arranged and easily found.
(Modified edition, Amendments No. 2, 4).
5.1a. Coils of wire weighing 20-100 kg are tied into coils.
The weight of the package must not exceed 1500 kg. By agreement between the manufacturer and the consumer, an increase in the weight of the package is allowed.
Cargo packages are formed into transport packages in accordance with GOST 24597 and GOST 21650.
5.2. A label must be firmly attached to each skein (coil), which indicates:
Trademark or name and trademark of the manufacturer;
Wire symbol;
Batch number;
Brand of technical control;
The image of the State Quality Mark for the wire of the highest quality category.
(Modified edition, Amendments No. 1, 2).
5.3. Wire is transported by all types of transport in accordance with the rules for the carriage of goods in force for this type of transport. Stowage and securing of loads in vehicles transported by railroad, should match technical specifications loading and securing cargo, approved by the USSR Ministry of Railways. Transportation by rail is carried out by wagon and low-tonnage or small shipments.
It is allowed to transport the wire in universal containers according to GOST 15102, GOST 20435, GOST 22225.
5.4. Wire storage - according to the conditions of 5 GOST 15150.
5.3, 5.4. (Modified edition, Amendment No. 2).
5.5. Transportation of wire sent to the regions of the Far North and areas equated to them is carried out in accordance with GOST 15846.
(Modified edition, Amendment No. 3).
5.6. Transport marking - in accordance with GOST 14192.
(Introduced additionally, Amendment No. 2).
ANNEX 1
Mandatory
Special heel for micrometer type MK in accordance with GOST 6507 for measuring the depth of dents
Material - steel ШХ15, У10А, У12А.
Hardness - HRC48-50
APPENDIX 2
Reference
Calculated cross-sectional area and theoretical linear density of the wire
APPENDIX 2. (Modified edition, Amendments No. 2, 3).
See also information about to buy a pipe price and prices for rolled metal products in the product catalog on our website.
GOST 6727-80
INTERSTATE STANDARD
LOW-CARBON WIRE
STEELS COLD-LOOKED
FOR REINFORCEMENT CONCRETE
CONSTRUCTIONS
TECHNICAL CONDITIONS
IPK PUBLISHING STANDARDS
Moscow
INTERSTATE STANDARD
Date of introduction 01/01/83
This standard applies to low-carbon steel wire, cold-drawn, periodic profile, class Вр-1 for reinforcing reinforced concrete structures.
1. BASIC PARAMETERS AND DIMENSIONS
1.1. (Deleted, Amendment No. 3).
1.2. The main parameters and dimensions of the wire must correspond to those indicated in table. 1.
Wire size designations are shown in the drawing.
Table 1
| Nominal wire diameter | Nominal size a | Limit deviations for size a | Depth of dents h | Limit deviations by the depth of the dents |
Nominal indentation pitch s | Limit deviations by step of dents | Length protrusion b |
Limit deviations along the length of the protrusion |
| 3,0 | 3,0 | +0,03 -0,09 |
0,15 | 2,0 | 0,6 | |||
| 4,0 | 4,0 | +0,04 -0,12 |
0,20 | +0,05 -0,02 |
2,5 | ± 0.2 | 0,8 | ± 0.2 |
| 5,0 | 5,0 | +0,05 -0,15 |
0,25 | 3,0 | 1,0 |
Note The nominal spacing of the indentations s and the radius of conjugation of the surface of the indentations with the protrusions R are reference values for the design of profiling tools and are not tested on wire.
(Modified edition, Amendments No. 2, 3).
1.3. Radius of mating surface of indentations with protrusions R for wire of all diameters should be equal to (2.5 ± 0.5) mm.
Allowed relative displacement of opposite dents up to 0.5 S and their location along the helical line of the wire axis.
1.4. Size difference a and a 1 must not exceed the size tolerance range a.
An example of a symbol for a wire with a nominal diameter of 3.0 mm:
Wire 3Bp1 GOST 6727-80.
2. TECHNICAL REQUIREMENTS
2.1. The wire must be manufactured in accordance with the requirements of this standard for technological regulations, approved in the prescribed manner. The wire must be made from wire rod according to OST 14-15-193.
(Modified edition, Amendments No. 1, 2).
2.2. The mechanical properties of the wire must correspond to those indicated in table. 2.
table 2
| Breaking force R, gN (kgf) |
Force corresponding to the conventional yield strength R 0.2, gN (kgf) | Number of folds | Relative extensiond 100,% | |
| not less | ||||
| 3,0 | 39 (400) | 35 (355) | 4 | 2,0 |
| 4,0 | 71 (720) | 62 (630) | 2,5 | |
| 5,0 | 106 (1085) | 97 (985) | 3,0 | |
2.3. On the surface of the wire there should be no cracks, captivity, sunsets, shells.
Risks and scratches with a depth of no more than half of the maximum deviations per size are allowed a and a coating of rust.
(Modified edition, Amendment No. 3).
2.4. The wire is manufactured in coils weighing 500-1500 kg. It is allowed to manufacture wire in coils weighing 20-100 kg. Each coil should consist of one piece of wire. The wire should be rolled into coils in undisturbed rows.
(Modified edition, Amendment No. 2).
2.5. Linear density of the wire must correspond to that indicated in table. 3.
Table 3
The calculated cross-sectional area and theoretical linear density of the wire are given in Appendix 2.
(Modified edition, Amendments No. 2, 3).
3. RULES OF ACCEPTANCE
3.1. Wire is accepted in batches. The lot should consist of wire, drawn up with one quality document, which should indicate:
- test results;
- the number of skeins;
- batch number;
- net weight of the batch;
(Modified edition, Amendments No. 1, 2, 3).
3.2. The size a, size difference a and a 1 and the surface quality of the wire is checked on each coil.
(Modified edition, Amendment No. 3).
3.3. To check the mechanical properties of the wire and the parameters of the wire profile, 3% of the coils should be selected from the batch, but not less than 5 coils.
(Modified edition, Amendment No. 2).
3.4. Upon receipt of unsatisfactory test results for at least one of the indicators, repeated tests are carried out on a doubled sample. The retest results are valid for the entire batch.
4. TEST METHODS
4.1. For each type of test, one sample is taken from one end of the coil.
4.2. The surface quality of the wire is monitored with the naked eye.
4.3. Dimensions (edit) a and a 1 wire is measured with a micrometer in accordance with GOST 6507.
Size difference a and a 1 is defined as the arithmetic mean of three measurements taken over a 1 m long section.
(Modified edition, Amendments No. 2, 3).
4.4. The parameters of the wire profile are determined as the arithmetic mean of three measurements taken over a 1 m section on each side.
Depth of dents h measured with a micrometer in accordance with GOST 6507, equipped with a special heel (mandatory Appendix 1).
Projection length b measured by reference microscope MPB-2, manufactured according to technical documentation.
In case of disagreement in measuring the parameters of the wire profile, the control is carried out according to the linear density of the wire (Table 3).
Linear density of the wire is determined as the quotient of dividing the mass of two samples 1 m long, weighed with an error of up to 0.001 kg, by their length, measured with an error of up to 0.001 m.
(Modified edition, Amendments No. 2, 3).
4.5. The tensile test of the wire is carried out in accordance with GOST 12004.
4.6. Testing of the wire for bending is carried out in accordance with GOST 1579. Wire with a diameter of 3.0 and 4.0 mm is tested on rollers with a diameter of 20 mm, and with a diameter of 5.0 mm - on rollers with a diameter of 30 mm.
When testing the wire, the specimen is clamped so that the indentations face the jaws of the instrument.
4.5, 4.6 (Modified edition, Amendment No. 2).
4.7. The depth of marks and scratches is determined by removing them by cleaning them with subsequent comparative measurement in the cleaned and uncleaned places.
(Modified edition, Amendments No. 2, 3).
5. PACKAGING, LABELING, TRANSPORTATION AND STORAGE
5.1. Each skein weighing 500-1500 kg should be evenly tied around the circumference in at least four places, and a skein weighing 20-100 kg - in at least three places.
At the request of the consumer, a skein weighing 500-1500 kg must have intermediate ties located inside the skein.
Wire rod according to OST 14-15-193 or heat-treated wire according to normative and technical documentation are used as binding materials.
The ends of the skein should be neatly arranged and easily found.
(Modified edition, Amendments No. 2, 4).
5.1a. Coils of wire weighing 20-100 kg are tied into coils.
The weight of the package must not exceed 1500 kg. By agreement between the manufacturer and the consumer, an increase in the weight of the package is allowed.
Cargo packages are formed into transport packages in accordance with GOST 24597 and GOST 21650.
5.2. A label must be firmly attached to each skein (coil), which indicates:
- trademark or name and trademark of the manufacturer;
- wire symbol;
- batch number;
- stamp of technical control;
- the image of the State Quality Mark for the wire of the highest quality category.
(Changed edition, Amendments No. 1, 2).
5.3. Wire is transported by all types of transport in accordance with the rules for the carriage of goods in force for this type of transport. The placement and securing of goods in vehicles transported by rail must comply with the technical conditions for loading and securing goods approved by the USSR Ministry of Railways. Transportation by rail is carried out by wagon and low-tonnage or small shipments.
It is allowed to transport wire in universal containers in accordance with GOST 15102, GOST 20435, GOST 22225.
5.4. Wire storage - according to the conditions of 5 GOST 15150.
5.3, 5.4. (Modified edition, Amendment No. 2).
5.5. Transportation of wire sent to the regions of the Far North and areas equated to them is carried out in accordance with GOST 15846.
(Modified edition, Amendment No. 3).
5.6. Transport marking - in accordance with GOST 14192.
(Introduced additionally, Amendment No. 2).
ANNEX 1
Mandatory
Special heel for micrometer type MK in accordance with GOST 6507 for measuring the depth of dents
Material - steel ШХ15, У10А, У12А.
Hardness - HRC48-50
APPENDIX 2
Reference
Calculated cross-sectional area and theoretical linear density of the wire
| Nominal wire diameter, mm | Estimated cross-sectional area, mm 2 | Theoretical linear density, kg |
| 3,0 | 7,07 | 0,052 |
| 4,0 | 12,57 | 0,092 |
| 5,0 | 19,63 | 0,144 |
APPENDIX 2. (Modified edition, Amendments No. 2, 3).
INFORMATION DATA
- DEVELOPED AND INTRODUCED by the Ministry of Ferrous Metallurgy of the USSR
DEVELOPERS
EAT. Kireev, K.G. Zalyalyutdinov, H.N. Belalov, N.A. Galkina, T.A. Korshunova, K.V. Mikhailov and V.I. Bondarenko, V.M. Skubko
- APPROVED AND PUT INTO EFFECT by the Decree of the USSR State Committee for Standards dated 05.15.80 No. 2108
- REPLACE GOST 6727-53
- REFERENCE REGULATORY AND TECHNICAL DOCUMENTS
| Designation of NTD referenced | Item, sub-item, application number |
| GOST 1579-93 | 4.6 |
| GOST 6507-90 | 4.3, 4.4, appendix 1 |
| GOST 12004-81 | 4.5 |
| GOST 14192-96 | 5.6 |
| GOST 15102-75 | 5.3 |
| GOST 15150-69 | 5.4 |
| GOST 15846-2002 | 5.5 |
| GOST 20435-75 | 5.3 |
| GOST 21650-76 | 5.1a |
| GOST 22225-76 | 5.3 |
| GOST 24597-81 | 5.1a |
| OST 14-15-193-86 | 2.1, 5.1 |
- The limitation of the validity period was removed according to the protocol 2-93 of the Interstate Council for Standardization, Metrology and Certification (IUS 2-93)
- EDITION (May 2003) with Amendments No. 1, 2, 3, 4, approved in December 1984, June 1987, October 1988, February 1990 (IUS 3-85, 10-87, 1 -89, 5-90)
Reprint(as of April 2008)
Posted in Tagged,GOST 6727-80
Group B71
INTERSTATE STANDARD
COLD-Drawn LOW-CARBON STEEL WIRE FOR REINFORCING CONCRETE STRUCTURES
Technical conditions
Cold-drawn low-carbon steel wire for reinforced concrete. Specifications
ISS 77.140.65
OKP 12 1400
Date of introduction 1983-01-01
INFORMATION DATA
1. DEVELOPED AND INTRODUCED by the Ministry of Ferrous Metallurgy of the USSR
DEVELOPERS
E. M. Kireev, K. G. Zalyalyutdinov, H. N. Belalov, N. A. Galkina, T. A. Korshunova, K. V. Mikhailov, V. I. Bondarenko, V. M. Skubko
2. APPROVED AND INTRODUCED INTO EFFECT by the Decree of the USSR State Committee for Standards dated 05.15.80 N 2108
3. REPLACE GOST 6727-53
4. REFERENCE REGULATORY AND TECHNICAL DOCUMENTS
Item, sub-item, application number |
|
4.3, 4.4, appendix 1 |
|
OST 14-15-193-86 |
5. The limitation of the validity period has been removed according to protocol 2-93 of the Interstate Council for Standardization, Metrology and Certification (IUS 2-93)
6. EDITION (May 2003) with Amendments N 1, 2, 3, 4, approved in December 1984, June 1987, October 1988, February 1990 (IUS 3-85, 10-87 , 1-89, 5-90)
Reprinted (as of April 2008)
This standard applies to low-carbon steel wire, cold-drawn, periodic profile, class Вр-1 for reinforcing reinforced concrete structures.
1. BASIC PARAMETERS AND DIMENSIONS
1.1. (Deleted, Amendment No. 3).
1.2. The main parameters and dimensions of the wire must correspond to those indicated in table 1.
Wire size designations are shown in the drawing.
Table 1
Nome- | Nominal size | Limit deviations | Depth of dents | Limit deviations | Nominal pitch of indentations | Limit deviations | Projection length | Limit deviations |
0,03 | 0,05 | |||||||
0,04 | ||||||||
Note. Nominal indentation pitch
and the radius of mating of the surface of the indentations with the protrusions are reference values for the design of the profiling tool and are not checked on the wire.
(Modified edition, Amendments N 2, 3).
1.3. The radius of conjugation of the surface of the indentations with the protrusions for wire of all diameters should be equal to (2.5 ± 0.5) mm.
A relative displacement of opposite dents up to 0.5 and their location along the helical line of the wire axis is allowed.
1.4. The difference in size and should not exceed the size tolerance range.
An example of a symbol for a wire with a nominal diameter of 3.0 mm:
Wire 3 Vr-1 GOST 6727-80.
2. TECHNICAL REQUIREMENTS
2.1. The wire must be manufactured in accordance with the requirements of this standard for technological regulations, approved in the prescribed manner.
The wire is made from wire rod according to OST 14-15-193.
2.2. The mechanical properties of the wire must correspond to those indicated in table 2.
table 2
Breaking force , gN (kgf) | Force corresponding to the conventional yield point, gN (kgf) | Number | Relative extension , % |
||
not less |
|||||
(Modified edition, Amendments N 1, 3).
2.3. On the surface of the wire there should be no cracks, captivity, sunsets, shells.
Risks and scratches with a depth of no more than half of the maximum deviations for size and rust deposits are allowed.
(Modified edition, Amendment N 3).
2.4. The wire is manufactured in coils weighing 500-1500 kg. It is allowed to manufacture wire in coils weighing 20-100 kg. Each coil should consist of one piece of wire. The wire should be rolled into coils in undisturbed rows.
(Modified edition, Amendment N 2).
2.5. Linear density of the wire must correspond to that indicated in table 3.
Table 3
Nominal wire diameter, mm | Linear density, kg, no more |
The calculated cross-sectional area and theoretical linear density of the wire are given in Appendix 2.
(Modified edition, Amendments N 2, 3).
3. RULES OF ACCEPTANCE
3.1. Wire is accepted in batches. The lot must consist of wire of the same diameter, drawn up in one quality document, which should indicate:
- test results;
- the number of skeins;
- batch number;
- net weight of the batch;
(Changed edition, Rev. N 1, 2, 3).
3.2. The size, size difference and surface quality of the wire is checked on each coil.
(Modified edition, Amendment N 3).
3.3. To check the mechanical properties of the wire and the parameters of the wire profile, 3% of the coils should be selected from the batch, but not less than 5 coils.
(Modified edition, Amendment N 2).
3.4. Upon receipt of unsatisfactory test results for at least one of the indicators, repeated tests are carried out on a doubled sample. The retest results are valid for the entire batch.
4. TEST METHODS
4.1. For each type of test, one sample is taken from one end of the coil.
4.2. The surface quality of the wire is monitored with the naked eye.
4.3. Dimensions and wires are measured with a micrometer in accordance with GOST 6507.
The magnitude of the difference in size and is determined as the arithmetic mean of three measurements taken on a site with a length of 1 m.
(Modified edition, Amendments N 2, 3).
4.4. The parameters of the wire profile are determined as the arithmetic mean of three measurements taken over a 1 m section on each side.
The depth of dents is measured with a micrometer in accordance with GOST 6507, equipped with a special heel (Appendix 1).
The length of the protrusion is measured by the reference microscope MPB-2, made according to the technical documentation.
In case of disagreements in measuring the parameters of the wire profile, the control is carried out according to the linear density of the wire (Table 3).
Linear density of the wire is determined as the quotient of dividing the mass of two samples 1 m long, weighed with an error of up to 0.001 kg, by their length, measured with an error of up to 0.001 m.
(Modified edition, Amendments N 2, 3).
4.5. The tensile test of the wire is carried out in accordance with GOST 12004.
4.6. The bend test of the wire is carried out in accordance with GOST 1579. Wire with a diameter of 3.0 and 4.0 mm is tested on rolls with a diameter of 20 mm, and with a diameter of 5.0 mm - on rolls with a diameter of 30 mm.
When testing the wire, the specimen is clamped so that the indentations face the jaws of the instrument.
4.5, 4.6. (Modified edition, Amendment N 2).
4.7. The depth of marks and scratches is determined by removing them by cleaning them with subsequent comparative measurement in the cleaned and uncleaned places.
(Modified edition, Amendments N 2, 3).
5. PACKAGING, LABELING, TRANSPORTATION AND STORAGE
5.1. Each skein weighing 500-1500 kg should be evenly tied around the circumference in at least four places, and a skein weighing 20-100 kg - in at least three places.
At the request of the consumer, a skein weighing 500-1500 kg must have intermediate ties located inside the skein.
Wire rod according to OST 14-15-193 or heat-treated wire according to normative and technical documentation is used as binding materials.
The ends of the skein should be neatly arranged and easily found.
(Modified edition, Rev. N 2, 4).
5.1a. Coils of wire weighing 20-100 kg are tied into coils.
The weight of the package must not exceed 1500 kg. By agreement between the manufacturer and the consumer, an increase in the weight of the package is allowed.
Cargo packages are formed into transport packages in accordance with GOST 24597 and GOST 21650.
5.2. A label must be firmly attached to each skein (coil), which indicates:
- trademark or name and trademark of the manufacturer;
- wire symbol;
- batch number;
- stamp of technical control;
- the image of the State Quality Mark for the wire of the highest quality category.
(Modified edition, Rev. N 1, 2).
5.3. Wire is transported by all types of transport in accordance with the rules for the carriage of goods in force for this type of transport. The placement and securing of goods in vehicles transported by rail must comply with the technical conditions for loading and securing goods approved by the USSR Ministry of Railways. Transportation by rail is carried out by wagon and low-tonnage or small shipments.
It is allowed to transport wire in universal containers in accordance with GOST 15102, GOST 20435,
(Introduced additionally, Rev. N 2).
APPENDIX 1 (mandatory). Special heel for micrometer type MK in accordance with GOST 6507 for measuring the depth of dents
ANNEX 1
Mandatory
Material - steel ШХ15, У10А, У12А. Hardness - HRC48-50.
APPENDIX 2 (reference). Calculated cross-sectional area and theoretical linear density of the wire
APPENDIX 2
Reference
Nominal wire diameter, mm | Estimated cross-sectional area, mm | Theoretical linear density, kg * |
0.052 clarifies the following: in Appendix 2, namely the heading of the table, there is a typo - The theoretical linear density is measured in kg / m. - Note from the manufacturer of the database. |
GOST 6727-80
INTERSTATE STANDARD
LOW-CARBON WIRE
STEELS COLD-LOOKED
FOR REINFORCEMENT CONCRETE
CONSTRUCTIONS
TECHNICAL CONDITIONS
IPK PUBLISHING STANDARDS
Moscow
INTERSTATE STANDARD
Date of introduction 01.01.83
This standard applies to low-carbon steel wire, cold-drawn, periodic profile, class Вр-1 for reinforcing reinforced concrete structures.
(Modified edition, Amendments No. 2, 3).
1. BASIC PARAMETERS AND DIMENSIONS
1.1. (Deleted, Amendment No. 3).
1.2. The main parameters and dimensions of the wire must correspond to those specified in.
Wire size designations are shown in the drawing.
3. RULES OF ACCEPTANCE
3.1. Wire is accepted in batches. The lot should consist of wire, drawn up with one quality document, which should indicate:
Test results;
Number of skeins;
Batch number;
Net weight of the batch;
The image of the State Quality Mark for the wire of the highest quality category.
(Modified edition, Amendments No. 1, 2, 3).
3.2. The size a, size difference a and a 1 and the surface quality of the wire is checked on each coil.
3.3. To check the mechanical properties of the wire and the parameters of the wire profile, 3% of the coils should be selected from the batch, but not less than 5 coils.
3.4. Upon receipt of unsatisfactory test results for at least one of the indicators, repeated tests are carried out on a doubled sample. The retest results are valid for the entire batch.
4. TEST METHODS
4.1. For each type of test, one sample is taken from one end of the coil.
4.2. The surface quality of the wire is monitored with the naked eye.
4.3. Dimensions (edit) a and a 1 wire is measured with a micrometer in accordance with GOST 6507.
Size difference a and a 1 is defined as the arithmetic mean of three measurements taken over a 1 m long section.
(Modified edition, Amendments No. 2, 3).
4.4. The parameters of the wire profile are determined as the arithmetic mean of three measurements taken over a 1 m section on each side.
Depth of dents hmeasured with a micrometer in accordance with GOST 6507, equipped with a special heel (mandatory Appendix 1).
Projection length b measured reference microscope MPB-2, manufactured according to technical documentation.
In case of disagreement in measuring the parameters of the wire profile, the control is carried out according to the linear density of the wire (Table 3).
Linear density of the wire is determined as the quotient of dividing the mass of two samples 1 m long, weighed with an error of up to 0.001 kg, by their length, measured with an error of up to 0.001 m.
(Modified edition, Amendments No. 2, 3).
4.5. The tensile test of the wire is carried out in accordance with GOST 12004.
4.6. Wire bend test is carried out in accordance with GOST 1579. Wire with a diameter of 3.0 and 4.0 mm is tested on rolls with a diameter of 20 mm, and with a diameter of 5.0 mm - on rolls with a diameter of 30 mm.
When testing the wire, the specimen is clamped so that the indentations face the jaws of the instrument.
4.5, 4.6 (Modified edition, Amendment No. 2).
4.7. The depth of marks and scratches is determined by removing them by cleaning them with subsequent comparative measurement in the cleaned and uncleaned places.
(Modified edition, Amendments No. 2, 3).
5. PACKAGING, LABELING, TRANSPORTATION AND STORAGE
5.1. Each skein weighing 500-1500 kg should be evenly tied around the circumference in at least four places, and a skein weighing 20-100 kg - in at least three places.
At the request of the consumer, a skein weighing 500-1500 kg must have intermediate ties located inside the skein.
Wire rod according to OST 14-15-193 or heat-treated wire according to normative and technical documentation are used as binding materials.
The ends of the skein should be neatly arranged and easily found.
(Modified edition, Amendments No. 2, 4).
5.1a. Coil wires weighing 20-100 kg are tied into bays.
The weight of the package must not exceed 1500 kg. By agreement between the manufacturer and the consumer, an increase in the weight of the package is allowed.
Cargo packages are formed into transport packages in accordance with GOST 24597 and GOST 21650.
5.2. A label must be firmly attached to each skein (coil), which indicates:
Trademark or name and trademark of the manufacturer;
Wire symbol;
Batch number;
Brand of technical control;
The image of the State Quality Mark for the wire of the highest quality category.
(Changed edition, Amendments No. 1, 2).
5.3. Wire is transported by all types of transport in accordance with the rules for the carriage of goods in force for this type of transport. The placement and securing of goods in vehicles transported by rail must comply with the technical conditions for loading and securing goods approved by the USSR Ministry of Railways. Transportation by rail is carried out by wagon and low-tonnage or small shipments.
It is allowed to transport wire in universal containers in accordance with GOST 15102, GOST 20435, GOST 22225.
5.4. Wire storage - according to the conditions of 5 GOST 15150.
5.3, 5.4. (Modified edition, Amendment No. 2).
5.5. Transportation of wire sent to the regions of the Far North and areas equated to them is carried out in accordance with GOST 15846.
(Modified edition, Amendment No. 3).
5.6. Transport marking - in accordance with GOST 14192.
(Introduced additionally, Amendment No. 2).
ANNEX 1
Mandatory
Special heel for micrometer type MK in accordance with GOST 6507 for measuring the depth of dents
Material - steel ШХ15, У10А, У12А.
Hardness - HRC 48-50
APPENDIX 2
Reference
Calculated cross-sectional area and theoretical linear density of the wire
|
Nominal wire diameter, mm |
Estimated cross-sectional area, mm 2 |
Theoretical linear density, kg |
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