Selected device connections, impulse line connectors manufactured by rosservice. Impulse Piping Guidelines Fitting and Tubing Materials
Compression fittings are supplied from various materials for use in industries such as:
- Shipbuilding
- Oil and gas
- Oil and gas platforms
- Chemistry and petrochemistry
- Oil refining
- Analytical systems
- Power plants
- Metallurgy
- Alternative views fuel
- Pharmaceuticals
- Diesel Engines
Material standards
D * | Material | ASTM standard | |
Bar material | Forgings | ||
SS | Stainless steel | A479, A276 Type 316 / 316L JIS G4303 SUS316 |
A182 F316 / F316L JIS G 3214 SUS F316 |
C | Carbon steel | A108 JIS G4051 S20C-S53C |
A105 JIS G4051 S20C-S53C |
B | Brass | B16, B453 C35300 JIS H3250 C3604, C3771 |
B283 Alloy 37700 JIS H3250 C3771 |
6MO | 6Mo (06ХН28МДТ) | A276 S31254 | A182 Grade F44 S31254 |
L20 | Alloy 20 | B473 N08020 | B462 N08020 |
L400 | Monel 400 | B164 N04400 | B564 N04400 |
L600 | Alloy 600 | B166 N06600 | B564 N06600 |
L625 | Alloy 625 | B446 N06625 | B564 N06625 |
L825 | Alloy 825 | B425 N08825 | B564 N08825 |
C276 | Hastelloy 276 | B574 N10276 | B564 N10276 |
D | Duplex SAF 2205 TM |
A276 S31803 A479 S31803 |
A182 F51 |
SD | Super duplex SAF 2507TM |
A479 S32750 | A182 F51 |
TI4 | Titanium Gr.4 |
B348 Gr. 4 | B381 F-4 |
Al | Aluminum | B211 Alloy 2024T6 JIS H4040 A2024, A6061 |
B247 |
TE | PTFE | D1710 | D3294 |
D *: Material designation
Stainless steel fittings
Fittings larger than 25mm (1 in.) Are supplied with Teflon (PFA) coated ferrules. For systems above 232 ° C (450 ° F), silver plated front rings and uncoated rear rings are available.
Carbon Steel Fittings
Carbon steel fittings are galvanized and have 316 stainless steel back rings.
Lubricant for nuts
All stainless steel fittings are silver-plated to reduce tightening torque and eliminate the effect cold welding and biting.
Outstanding quality
Compression fittings offer outstanding performance in harsh environments such as high and low temperature systems, vibration, pressure surges, etc.
- Rolled external threads.
- The rings are made from company materials. Carpenter.TM
- The mechanical characteristics of the rings make it possible to crimp tubes with high rigidity.
- Specially machined back ring allows to increase the number of connections and increase their reliability.
- The number of assemblies / disassembly significantly exceeds that of competitors.
- Absolute tightness with any media, including small-molecular gases.
- The working pressure is 4 times the tube pressure.
- Hit code on all fittings.
High pressure gas systems
To move the gas through the tubes, its pressure is increased. It also uses high pressure when pumping cylinders and containers. Pressure over 34.5 bar is considered high. Compression fittings show excellent performance in gas service high pressure.
Selection of impulse pipes for gas systems
Use thicker-walled tubing for gas systems. In table 8, gas tubes are shown in light cells. Thin-walled tubes are marked with gray cells for easy identification. Gases such as air, oxygen, helium, nitrogen, methane, propane, and others have very small molecules that allow them to penetrate through thin-walled tubes. Thick-walled tubing is also less sensitive to ferrules, while thin-walled tubing can be deformed by ferrules.
Application in vacuum systems
Cryogenic applications
Stainless steel HSME fittings are able to maintain their tightness down to -200 ° C.
Assembling and disassembling compression fittings
The outstanding mechanical properties of HSME ferrule fittings ensure maximum assembly / disassembly of connections.
Leaks
When the installation instructions are followed, the HSME fittings provide a completely sealed connection.
Fittings for metric tubes
Metric fittings visually differ from inch fittings by the presence of special protrusions on the fitting body, as well as on the nut.
Cleaning
All fittings are cleaned of external contaminants, as well as small metal particles, oils, cutting fluids. Cleaning of products for use in oxygen systems is available on request. Cleaning is done in accordance with ASTM G93 Level C.
Impulse tube selection
Correct selection tubing, proper transportation and storage of the tubing is the key to a reliable and sealed system.
Tube surface
The surface of the tube must be free from scoring, scratches or other damage.
Tube stiffness
- The tube must be completely annealed.
- The tube must be suitable for bending.
Ovality
The tube should be round and fit easily into the fitting.
Welded tubing
The welded tube must not have protruding seams.
Tube wall thickness
The wall thickness must match the operating pressure of the system. Impulse tubing suitable for use with compression fittings is shown in table 8. gas systems must be selected from light cells. Tubing with wall thicknesses not shown in the table is not recommended for use with compression fittings.
Impulse tube transportation
Impulse tubes must be transported very carefully to avoid damage.
- Do not pull the tube out of the tubes and racks.
- Do not drag the tube.
Tube cutting
- Choose a suitable pipe cutter, the wrong choice may damage the pipe.
- Cut carefully to avoid jamming the tube.
- The serrated saw must have a minimum of 32 teeth per inch.
- After cutting, the end of the tube must be processed with a facing tool.
Threaded standards
The table below lists the thread standards that apply to HSME fittings.
D *: Thread designation E *: Analog Swagelok
Operating pressure
Compression Fittings Working Pressure
The working pressure of the compression fittings is determined by the working pressure of the impulse tube.
Working pressure of threaded connections
When the fitting is present threaded connection, then the working pressure can be limited by the working pressure of the threaded connection.
Working pressures are based on ASME B31.3 at room temperature.
Tapered threads - N and R
The size, inch |
St. steel and carbon. steel | Brass | ||||||
External | Int. | External | Int. | |||||
psi | Bar | psi | Bar | psi | Bar | psi | Bar | |
1/16 | 14,000 | 965 | 6,600 | 455 | 7,400 | 510 | 3,300 | 227 |
1/8 | 10,000 | 689 | 6,400 | 441 | 5,000 | 345 | 3,200 | 220 |
1/4 | 8,300 | 572 | 6,500 | 448 | 4,100 | 282 | 3,200 | 220 |
3/8 | 8,000 | 551 | 5,200 | 358 | 4,000 | 275 | 2,600 | 179 |
1/2 | 7,800 | 537 | 4,800 | 331 | 3,900 | 269 | 2,400 | 165 |
3/4 | 7,500 | 517 | 4,600 | 317 | 3,700 | 255 | 2,300 | 158 |
1 | 5,300 | 365 | 4,400 | 303 | 2,600 | 179 | 2,200 | 152 |
1-1/4 | 6,200 | 427 | 5,000 | 345 | 3,100 | 214 | 2,500 | 172 |
1-1/2 | 5,100 | 351 | 4,500 | 310 | 2,500 | 172 | 2,200 | 152 |
2 | 4,000 | 276 | 3,900 | 269 | 2,000 | 138 | 1,900 | 131 |
Cylindrical threads - G and GB
The size | St. and carbon. steel | |
External | ||
psi | Bar | |
S | 20ksi | |
1/8 | 16000 | 1103 |
1/4 | 12500 | 861 |
3/8 | 12000 | 827 |
1/2 | 11900 | 820 |
3/4 | 8000 | 551 |
1 | 5600 | 386 |
1 1/4 | 5400 | 372 |
1 1/2 | 5100 | 351 |
SAE UF and UP parallel threads
SAE Thread Size | Stainless and carbon steel | ||||
Non-rotating "UF" | Rotating "UP" | ||||
psi | Bar | psi | Bar | ||
2 | 5/16-24 | 4568 | 315 | 4568 | 315 |
4 | 7/16-20 | ||||
6 | 9/16-18 | 3626 | 250 | ||
8 | 3/4-160 | ||||
10 | 7/8-14 | 3626 | 250 | 2900 | 200 |
12 | 1 1/16-12 | ||||
14 | 1 3/16-12 | 2900 | 200 | 2320 | 160 |
16 | 1 5/16-12 | ||||
20 | 1 5/8-12 | 2320 | 160 | 1813 | 125 |
24 | 1 7/8-12 | ||||
32 | 2 1/2-12 | 1813 | 125 | 1450 | 100 |
Pressures shown on SAE J1926 / 3 threads at room temperature.
Rotating ISO / BSPP Straight Thread - GR
SAE J514 37 ° AN thread
Tube diameter | St. and carbon steel | ||
SAE J514 Table 1. | |||
Metric, mm | Inch | Psi | Bar |
2 | 1/8 | 5000 | 344 |
6 | 1/4 | 5000 | 344 |
8 | 5/16 | 5000 | 344 |
10 | 3/8 | 4000 | 275 |
12 | 1/2 | 3000 | 206 |
16 | 5/8 | 3000 | 206 |
20 | 3/4 | 2500 | 172 |
25 | 1 | 2000 | 137 |
32 | 1 1/4 | 1150 | 79.2 |
38 | 1 1/2 | 1000 | 68.9 |
50 | 2 | 1000 | 68.9 |
Pressures taken from SAE J514.
Weld ends - BW
Nominal tube size | Stainless and Carbon Steel | |
Butt weld end | ||
Psi | Bar | |
S value | 20 ksi | |
1/8 | 5300 | 365 |
1/4 | 5200 | 358 |
3/8 | 4400 | 303 |
1/2 | 4100 | 282 |
3/4 | 3200 | 220 |
1 | 3100 | 213 |
1 1/4 | 3000 | 206 |
1 1/2 | 2900 | 199 |
2 | 1900 | 131 |
Pressures are indicated at room temperature.
Socket weld - SW
Pressures shown are for a welded joint.
Fittings with seal “NO” and “UO”
St. and carbon steel “NO” & “UO” Threads up to 1 inch are rated for 206 bar at room temperature.
Translation table
Bar | MPa | Psi |
1 | 0,1 | 14.5 |
100 | 10 | 1450 |
160 | 16 | 2321 |
210 | 21 | 3045 |
315 | 31.5 | 4569 |
350 | 35 | 5075 |
400 | 40 | 5801 |
413.68 | 41.36 | 6000 |
Working temperature
When the thread is mounted with an O-ring, sealing ring may limit the operating temperature of the fitting. Brass and carbon steel fittings are equipped with FKM rings with a hardness of 70 Shore and stainless steel with FKM rings with a hardness of 90 Shore.
O-ring operating temperature
Fitting and Tubing Materials
Pick up the right combination materials for the fitting and pipes for the construction of sealed systems. Using the wrong materials can lead to leaks in the system.
Table 1. Inch Seamless Stainless Steel Tube
Fully annealed tube in 316 / 316L, 304 / 304L stainless steel per ASTM A269 or A213 suitable for bending and rolling. Hardness 90 Vickers or less.
Diameter | Wall thickness (inch) | ||||||||||||||
tubes, | 0.012 | 0.014 | 0.016 | 0.02 | 0.028 | 0.035 | 0.049 | 0.065 | 0.083 | 0.095 | 0.109 | 0.12 | 0.134 | 0.156 | 0.188 |
inch | |||||||||||||||
1/16 | 6800 | 8100 | 9400 | 12000 | |||||||||||
1/8 | 8500 | 10900 | |||||||||||||
3/16 | 5400 | 7000 | 10200 | ||||||||||||
1/4 | 4000 | 5100 | 7500 | 10200 | |||||||||||
5/16 | 4000 | 5800 | 8000 | ||||||||||||
3/8 | 3300 | 4800 | 6500 | 8600 | |||||||||||
1/2 | 2600 | 3700 | 5100 | 6700 | |||||||||||
5/8 | 2900 | 4000 | 5200 | 6000 | |||||||||||
3/4 | 2400 | 3300 | 4200 | 4900 | 5800 | 6400 | |||||||||
7/8 | 2000 | 2800 | 3600 | 4200 | 4800 | 5400 | 6100 | ||||||||
1 | 2400 | 3100 | 3600 | 4200 | 4700 | 5300 | 6200 | ||||||||
1 1/4 | 2400 | 2800 | 3300 | 3600 | 4100 | 4900 | |||||||||
1 1/2 | 2300 | 2700 | 3000 | 3400 | 4000 | 4900 | |||||||||
2 | 2000 | 2200 | 2500 | 2900 | 3600 |
Table 2. Metric Seamless Stainless Steel Tube
Diameter | Wall thickness (mm) | |||||||||||||||
tubes, | 0.6 | 0.8 | 1.0 | 1.2 | 1.5 | 1.8 | 2.0 | 2.2 | 2.5 | 2.8 | 3.0 | 3.5 | 4.0 | 4.5 | 5.0 | |
in | Working pressure, (bar) | |||||||||||||||
2 | 780 | 1050 | ||||||||||||||
3 | 516 | 710 | ||||||||||||||
4 | 520 | 660 | ||||||||||||||
6 | 330 | 420 | 520 | 670 | ||||||||||||
8 | 310 | 380 | 490 | |||||||||||||
10 | 240 | 300 | 380 | |||||||||||||
12 | 200 | 240 | 310 | 380 | 430 | |||||||||||
14 | 180 | 220 | 280 | 340 | 390 | 430 | ||||||||||
15 | 170 | 200 | 260 | 320 | 360 | 400 | ||||||||||
16 | 190 | 240 | 300 | 330 | 370 | |||||||||||
18 | 170 | 210 | 260 | 290 | 320 | 370 | ||||||||||
20 | 150 | 190 | 230 | 260 | 290 | 330 | 380 | |||||||||
22 | 130 | 170 | 210 | 230 | 260 | 300 | 340 | |||||||||
25 | 180 | 200 | 230 | 260 | 300 | 320 | ||||||||||
28 | 180 | 200 | 230 | 260 | 300 | 320 | ||||||||||
30 | 170 | 190 | 210 | 240 | 260 | 310 | ||||||||||
32 | 160 | 170 | 200 | 230 | 240 | 290 | 330 | |||||||||
38 | 140 | 170 | 190 | 200 | 240 | 280 | 310 | |||||||||
42 | 170 | 180 | 210 | 250 | 280 | |||||||||||
50 | 150 | 180 | 200 | 230 | 260 |
In accordance with the requirements of ASME B31.3, the pressures are calculated at temperatures from -28 to 37 ° C and a maximum allowable voltage of 1378bar.
- ASTM A269 Maximum Allowable Tube Diameter: +/-
13
mm
(+/- 0.005 in.) Deviation maximum: +/- 15%
- The safety factor for the tube is 3.75.
Welded stainless steel tubes
Working pressure derating factors are used for welded tubing in accordance with ASME B31.3. For tubes with one seam, it is 0.80, for tubes with two welds, it is 0.85.
Table 3. Inch Seamless Carbon Steel Tubing
Annealed carbon steel tubing per ASTM A179. The tubing must be suitable for bending and must not have deep scratches or damage. Vickers hardness 72 or less.
Tube diameter, inch | Wall thickness, (inch) | ||||||||||||
0.028 | 0.035 | 0.049 | 0.065 | 0.083 | 0.095 | 0.109 | 0.12 | 0.134 | 0.148 | 0.165 | 0.18 | 0.22 | |
Working pressure (psi) | |||||||||||||
1/8 | 8000 | 10200 | |||||||||||
3/16 | 5100 | 6600 | 9600 | ||||||||||
1/4 | 3700 | 4800 | 7000 | 9600 | |||||||||
5/16 | 3800 | 5500 | 7600 | ||||||||||
3/8 | 3100 | 4500 | 6200 | ||||||||||
1/2 | 2300 | 3300 | 4500 | 5900 | |||||||||
5/8 | 1800 | 2600 | 3500 | 4600 | 5300 | ||||||||
3/4 | 2100 | 2900 | 3700 | 4300 | 5100 | ||||||||
7/8 | 1800 | 2400 | 3200 | 3700 | 4300 | ||||||||
1 | 1500 | 2100 | 2700 | 3200 | 3700 | 4100 | |||||||
1 1/4 | 1600 | 2100 | 2500 | 2900 | 3200 | 3600 | 4000 | 4600 | 5000 | ||||
1 1/2 | 1800 | 2000 | 2400 | 2600 | 3000 | 3300 | 3700 | 4100 | 5100 | ||||
2 | 1500 | 1700 | 1900 | 2200 | 2400 | 2700 | 3000 | 3700 |
Table 4. Metric Seamless Carbon Steel Tubing.
Tube diameter, mm | Wall thickness (mm) | ||||||||||||
0.8 | 1 | 1.2 | 1.5 | 1.8 | 2 | 2.2 | 2.5 | 2.8 | 3 | 3.5 | 4 | 4.5 | |
Working pressure, (bar) | |||||||||||||
3 | 670 | 830 | |||||||||||
6 | 310 | 400 | 490 | 630 | |||||||||
8 | 290 | 360 | 460 | ||||||||||
10 | 230 | 280 | 360 | ||||||||||
12 | 190 | 230 | 290 | 360 | 410 | 450 | |||||||
14 | 160 | 190 | 250 | 300 | 340 | 380 | |||||||
15 | 150 | 180 | 230 | 280 | 320 | 350 | |||||||
16 | 170 | 210 | 260 | 290 | 330 | 380 | |||||||
18 | 150 | 190 | 230 | 260 | 290 | 330 | |||||||
20 | 130 | 170 | 200 | 230 | 250 | 290 | 330 | ||||||
22 | 120 | 150 | 180 | 210 | 230 | 260 | 300 | ||||||
25 | 160 | 180 | 200 | 230 | 260 | 280 | |||||||
28 | 160 | 180 | 200 | 230 | 250 | 290 | |||||||
30 | 150 | 160 | 190 | 210 | 230 | 270 | |||||||
32 | 140 | 150 | 170 | 200 | 210 | 250 | 290 | ||||||
38 | 130 | 140 | 160 | 180 | 210 | 240 | 280 |
Tube working pressure is calculated according to ASME A179 and calculated at temperatures from -28 ° C to 37 ° C.
- The pressure safety factor is 3.
- Multiply by 0.85 to determine tube pressure at high temperatures.
Table 5. Inch Seamless Copper Tubing
Annealed copper tubing per ASTM B75. Tubes must be suitable for bending and flaring and must not be damaged or deeply scratched. Vickers hardness 60 or less.
Tube diameter, inch | Wall thickness, (inch) | ||||||||||
0.01 | 0.012 | 0.028 | 0.035 | 0.049 | 0.065 | 0.083 | 0.095 | 0.109 | 0.12 | 0.134 | |
1/8 | 2700 | 3600 | |||||||||
3/16 | 1800 | 2300 | 3400 | ||||||||
1/4 | 1300 | 1600 | 2500 | 3500 | |||||||
5/16 | 1300 | 1900 | 2700 | ||||||||
3/8 | 1000 | 1600 | 2200 | ||||||||
1/2 | 800 | 1100 | 1600 | 2100 | |||||||
5/8 | 900 | 1200 | 1600 | 1900 | |||||||
3/4 | 700 | 1000 | 1300 | 1500 | 1800 | ||||||
7/8 | 600 | 800 | 1100 | 1300 | 1500 | ||||||
1 | 500 | 700 | 900 | 1100 | 1300 | 1500 | |||||
1 1/8 | 600 | 800 | 1000 | 1100 | 1300 | 1400 |
Table 6. Metric Seamless Copper Tubing
Tube diameter, mm | Wall thickness (mm) | |||||||||||
0.7 | 0.8 | 1.0 | 1.2 | 1.5 | 1.6 | 1.8 | 2.0 | 2.2 | 2.5 | 2.8 | 3.0 | |
Working pressure, (bar) | ||||||||||||
3 | 220 | 250 | ||||||||||
4 | 160 | 190 | 240 | 290 | ||||||||
6 | 120 | 150 | 190 | 240 | 260 | |||||||
8 | 80 | 110 | 130 | 170 | 190 | |||||||
10 | 70 | 80 | 100 | 130 | 150 | 170 | 190 | |||||
12 | 50 | 70 | 80 | 110 | 120 | 130 | 150 | |||||
14 | 60 | 70 | 90 | 100 | 110 | 130 | 140 | 170 | 190 | 200 | ||
16 | 50 | 60 | 80 | 80 | 100 | 110 | 120 | 140 | 160 | 180 | ||
18 | 40 | 50 | 70 | 70 | 80 | 100 | 110 | 120 | 140 | 150 | ||
22 | 30 | 40 | 50 | 60 | 70 | 80 | 80 | 100 | 110 | 120 | ||
25 | 30 | 40 | 50 | 50 | 60 | 70 | 70 | 80 | 100 | 100 | ||
28 | 50 | 60 | 60 | 70 | 80 | 90 |
Tube working pressure is calculated per ASME B75 and B88 is calculated from -28 ° C to 37 ° C.
Alloy 400 tube (Monel)
Annealed seamless tubing per ASTM B165. The tube must be suitable for bending and must not be damaged or deeply scratched. Vickers hardness 75 or less. Diameter tolerances: +/- 0.13 mm.
Table 7. Alloy 400 Inch Seamless Tube
Tube diameter, inch | Wall thickness, (inch) | |||||||
0.028 | 0.035 | 0.049 | 0.065 | 0.083 | 0.095 | 0.109 | 0.12 | |
Working pressure (psi) | ||||||||
1/8 | 7900 | 10200 | ||||||
1/4 | 3700 | 4800 | 7000 | 9600 | ||||
3/8 | 3100 | 4400 | 6100 | |||||
1/2 | 2300 | 3300 | 4400 | |||||
3/4 | 2200 | 3000 | 4000 | 4600 | ||||
1 | 2200 | 2900 | 3400 | 3900 | 4300 |
Table 8. Metric Alloy 400 Seamless Tube
Diameter OD mm | Wall thickness (mm) | |||||||||
0.8 | 1.0 | 1.2 | 1.5 | 1.8 | 2.0 | 2.2 | 2.5 | 2.8 | 3.0 | |
Working pressure, (Bar) | ||||||||||
6 | 370 | 480 | 590 | 750 | ||||||
8 | 350 | 430 | 550 | |||||||
10 | 270 | 330 | 430 | |||||||
12 | 220 | 270 | 350 | |||||||
14 | 190 | 230 | 290 | 360 | ||||||
18 | 170 | 220 | 270 | 310 | 340 | |||||
20 | 200 | 240 | 270 | 300 | 350 | |||||
25 | 170 | 210 | 240 | 270 | 310 | 330 |
Tube working pressure is calculated per ASME B165 and calculated at -28 ° C to 37 ° C.
The pressure safety factor is 3.7.
Alloy C276 tube
Alloy C276 annealed tubing per ASTM B622. The tube must be suitable for bending and must be missing deep scratches... Vickers hardness 100 or less. Diameter tolerances: +/- 0.13 mm.
Table 9. Metric Alloy C276 Tube
Tube diameter, inch | Wall thickness, (inch) | |||||
0.020 | 0.028 | 0.035 | 0.049 | 0.065 | 0.083 | |
1/8 | 8,200 | 12,000 | 15,300 | |||
3/16 | 5,300 | 7,700 | 9,900 | 14,400 | ||
1/4 | 5,600 | 7,200 | 10,600 | 14,400 | ||
5/16 | 5,700 | 8,200 | 11,300 | |||
3/8 | 4,700 | 6,700 | 9,200 | |||
1/2 | 3,400 | 4,900 | 6,700 | 8,800 |
Table 10. Metric Alloy C276 Tube
Tube diameter, mm | Wall thickness (mm) | |||||
0.8 | 1.0 | 1.2 | 1.5 | 1.8 | 2.0 | |
Working pressure, (bar) | ||||||
6 | 450 | 600 | 760 | 1,000 | ||
8 | 440 | 550 | 730 | |||
10 | 340 | 430 | 570 | |||
12 | 280 | 350 | 460 | 580 | 660 |
Tube working pressure is calculated per ASME B622 and calculated at temperatures from -28 ° C to 37 ° C.
The pressure safety factor is 3.6.
Alloy 825 tube
Alloy C276 annealed tubing per ASTM B622. The tube must be suitable for bending and must be free of deep scratches. Vickers hardness 201 or less. Diameter tolerances: +/- 0.13 mm.
Table 11. Alloy 825 Inch Tube
Tube diameter, inch | Wall thickness, inch | |||||
0.020 | 0.028 | 0.035 | 0.049 | 0.065 | 0.083 | |
1/8 | 7,300 | 10,700 | 13,700 | |||
3/16 | 4,700 | 6,800 | 8,800 | 12,800 | ||
1/4 | 5,000 | 6,400 | 9,300 | 12,700 | ||
5/16 | 5,000 | 7,300 | 10,000 | |||
3/8 | 4,100 | 5,900 | 8,200 | |||
1/2 | 3,000 | 4,300 | 5,900 | 7,800 |
Table 12. Metric Alloy 825 Tube
Tube diameter, mm | Wall thickness, inch, ((m)) | |||||
0.8 | 1.0 | 1.2 | 1.5 | 1.8 | 2.0 | |
Working pressure, (bar) | ||||||
6 | 460 | 600 | 730 | 930 | ||
8 | 430 | 530 | 680 | |||
10 | 340 | 410 | 530 | |||
12 | 280 | 340 | 430 | 530 | 600 |
Tube working pressure is calculated per ASME B423 and calculated at -28 ° C to 37 ° C.
The pressure safety factor is 3.65.
Table 13. Inch Seamless Super Duplex Tubing
Alloy C276 annealed tubing per ASTM A789. The tube must be suitable for bending and must be free of deep scratches. Vickers hardness 32 or less. Diameter tolerances: +/- 0.13 mm.
Tube working pressure is calculated per ASME B423 and calculated at -28 ° C to 37 ° C.
The pressure safety factor is 3.
Alloy 625 tube
Table 14. Alloy 625 Inch Tube
Wall thickness, inch | Wall thickness, (inch) | |||||
0.020 | 0.028 | 0.035 | 0.049 | 0.065 | 0.083 | |
Working pressure (psi) | ||||||
1/8 | 8,400 | 12,200 | 15,600 | |||
3/16 | 5,400 | 7,800 | 10,100 | 14,600 | ||
1/4 | 5,700 | 7,300 | 10,600 | 14,600 | ||
5/16 | 5,700 | 8,300 | 11,400 | |||
3/8 | 4,700 | 6,800 | 9,300 | |||
1/2 | 3,400 | 5,000 | 6,800 | 8,900 |
Table 15. Metric Alloy 625 Tube
Tube diameter, mm | Wall thickness (mm) | |||||
1.0 | 1.2 | 1.5 | 1.8 | 2.0 | ||
Working pressure (psi) | ||||||
6 | 473 | 614 | 754 | 967 | ||
8 | 447 | 547 | 707 | |||
10 | 347 | 427 | 547 | |||
12 | 287 | 353 | 447 | 547 | 620 |
Alloy 600 tube
Table 16. Alloy 600 Inch Tube
Tube OD in. | Tube Wall Thickness, in. | |||
0.028 | 0.035 | 0.049 | 0.065 | |
Working Pressure (psig) | ||||
1/4 | 4,000 | 5,100 | 7,500 | 10,200 |
3/8 | 3,300 | 4,800 | 6,500 | |
1/2 | 2,400 | 3,500 | 4,700 |
Table 17. Alloy 600 Metric Tube
The pressure safety factor is 5.
Alloy 20 tube
Table 18. Alloy 20 Inch Tube
Tube diameter, inch | ||||||
0.02 | 0.028 | 0.035 | 0.049 | 0.065 | 0.083 | |
Working pressure (psi) | ||||||
1/8 | 6800 | 9900 | 12700 | |||
3/16 | 4400 | 6300 | 8200 | 11900 | ||
1/4 | 4700 | 5900 | 8700 | 11900 | ||
5/16 | 4700 | 6800 | 9400 | |||
3/8 | 3800 | 5500 | 7600 | |||
1/2 | 2800 | 4100 | 5500 | 7300 |
Table 19. Metric Alloy 20 Tube
Tube diameter, mm | Wall thickness (mm) | |||||
0.8 | 1.0 | 1.2 | 1.5 | 1.8 | 2.0 | |
Working pressure, (bar) | ||||||
6 | 390 | 500 | 610 | 780 | ||
8 | 360 | 440 | 570 | |||
10 | 280 | 350 | 440 | |||
12 | 230 | 280 | 360 | 450 | 500 |
Tube working pressure is calculated per ASME B167 and is calculated from -28 ° C to 37 ° C.
The pressure safety factor is 5.
Titanium tubes
Table 20. Inch Seamless Tube
Table 21. Metric Seamless Tubing
Seamless aluminum tubes
Table 22. Inch tube made of aluminum
Tube diameter, mm | Wall thickness, (inch) | ||||
0.035 | 0.049 | 0.065 | 0.083 | 0.095 | |
Working pressure (psi) | |||||
1/8 | 8600 | ||||
3/16 | 5600 | 8000 | |||
1/4 | 4000 | 5900 | |||
5/16 | 3100 | 4600 | |||
3/8 | 2600 | 3700 | |||
1/2 | 1900 | 2700 | 3700 | ||
5/8 | 1500 | 2100 | 2900 | ||
3/4 | 1700 | 2400 | 3200 | ||
1 | 1300 | 1700 | 2300 | 2700 |
Table 23. Metric aluminum tubing
Tube diameter, mm | Wall thickness (mm) | ||||||
1.0 | 1.2 | 1.5 | 1.8 | 2.0 | 2.2 | 2.5 | |
Working pressure, (bar) | |||||||
6 | 340 | 420 | |||||
8 | 250 | 300 | |||||
10 | 190 | 240 | |||||
12 | 160 | 190 | 250 | 310 | |||
14 | 130 | 160 | 210 | 260 | |||
15 | 120 | 150 | 190 | 240 | |||
16 | 120 | 140 | 180 | 220 | |||
18 | 120 | 160 | 190 | 220 | |||
20 | 140 | 170 | 190 | ||||
22 | 130 | 150 | 170 | 190 | |||
25 | 110 | 130 | 150 | 170 | 190 |
Decrease in the working pressure of the tube with increasing temperature
As the temperature rises, the working pressure of the fittings and tubing decreases.
Multiply the pressure by the derating factor from table 24 to determine the working pressure of the tubing and fittings.
- Seamless tubing made of 316 stainless steel, 1/2 "diameter, 0.065" wall thickness.
- Working pressure from -28 to 37 ° C 5100 psi as shown in table 1.
- To find working pressure at 649 ° C, multiply 5100 psi by 0.37 from the 5100 psi x 0.37 table = 1887 psi
Table 24. Coefficients of pressure reduction with increasing temperature
ASTM standard | A269 | B75 | A179 | B165 | B622 | B423 | B444 | B167 | A789 | B729 | B338 | B210 | |
Temperature | St. steel 316 | Copper | Carbon. steel | Alloy 400 | Alloy 276 | Alloy 825 | Alloy 625 | Alloy 600 | Super duplex | Alloy 20 | Titanium | Aluminum | |
F ° | C ° | ||||||||||||
100 | 38 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 |
200 | 93 | 1 | 0.80 | 0.96 | 0.88 | 1 | 1 | 0.92 | 1 | 1 | 0.86 | 0.88 | 1 |
300 | 149 | 1 | 0.78 | 0.90 | 0.82 | 1 | 1 | 0.88 | 1 | 0.86 | 0.85 | 0.72 | 1 |
400 | 204 | 0.97 | 0.50 | 0.86 | 0.79 | 1 | 1 | 0.85 | 1 | 0.82 | 0.83 | 0.61 | 0.94 |
500 | 260 | 0.9 | 0.13 | 0.82 | 0.79 | 0.99 | 1 | 0.81 | 1 | 0.81 | 0.83 | 0.53 | 0.81 |
600 | 316 | 0.85 | 0.77 | 0.79 | 0.93 | 1 | 0.79 | 1 | 0.81 | 0.83 | 0.45 | 0.56 | |
650 | 343 | 0.84 | 0.75 | 0.79 | 0.90 | 1 | 0.78 | 1 | 0.82 | 0.40 | |||
700 | 371 | 0.82 | 0.73 | 0.79 | 0.88 | 1 | 0.77 | 1 | 0.82 | ||||
750 | 399 | 0.81 | 0.68 | 0.78 | 0.86 | 1 | 0.76 | 1 | 0.82 | ||||
800 | 427 | 0.80 | 0.59 | 0.76 | 0.84 | 0.99 | 0.75 | 1 | 0.82 | ||||
850 | 454 | 0.79 | 0.50 | 0.59 | 0.83 | 0.98 | 0.74 | 0.98 | |||||
900 | 482 | 0.78 | 0.41 | 0.43 | 0.82 | 0.98 | 0.73 | 0.80 | |||||
950 | 510 | 0.77 | 0.29 | 0.81 | 0.97 | 0.73 | 0.53 | ||||||
1000 | 538 | 0.77 | 0.16 | 0.80 | 0.96 | 0.72 | 0.35 | ||||||
1050 | 566 | 0.73 | 0.10 | 0.68 | 0.72 | 0.23 | |||||||
1100 | 593 | 0.62 | 0.06 | 0.55 | 0.72 | 0.15 | |||||||
1150 | 621 | 0.49 | 0.45 | 0.72 | 0.11 | ||||||||
1200 | 649 | 0.37 | 0.36 | 0.72 | 0.10 | ||||||||
1250 | 677 | 0.28 | 0.29 |
Ordering information
Tube designation
Diameter inch | 1/16 | 1/8 | 3/16 | 1/4 | 5/16 | 3/8 | 1/2 | 5/8 | 3/4 | 7/8 | 1 | 1 1/4 | 1 1/2 | 2 |
Designation | 1 | 2 | 3 | 4 | 5 | 6 | 8 | 10 | 12 | 14 | 16 | 20 | 24 | 32 |
Diameter mm | 2mm | 3mm | 4mm | 6mm | 8mm | 10mm | 12mm | 16mm | 18mm | 22mm | 25mm | 32mm | 38mm | 50mm |
Designation | 2M | 3M | 4M | 6M | 8M | 10M | 12M | 16M | 18M | 22M | 25M | 32M | 38M | 50M |
Thread size designation
Thread size, inch | 1/16 | 1/8 | 1/4 | 3/8 | 1/2 | 3/4 | 1 | 1 1/4 | 1 1/2 | 2 |
Designation | 1 | 2 | 4 | 6 | 8 | 12 | 16 | 20 | 24 | 32 |
N | 1N | 2N | 4N | 6N | 8N | 12N | 16N | 20N | 24N | 32N |
R | 1R | 2R | 4R | 6R | 8R | 12R | 16R | 20R | 24R | 32R |
G | - | 2G | 4G | 6G | 8G | 12G | 16G | 20G | 24G | 32G |
Material designation
Material | Designation | |
Element | Assembled product | |
St. stainless steel 316 / 316L | SS | SSA |
Carbon steel | WITH | CA |
Brass | B | BA |
6Mo | 6MO | 6MOA |
Alloy 20 | L20 | L20A |
Monel 400 | L400 | L400A |
Alloy 600 | L600 | L600A |
Alloy 625 | L625 | L625A |
Alloy 825 | L825 | L825A |
Hastelloy | C276 | C276A |
Duplex | D | DA |
Super duplex | SD | SDA |
Titanium | TI4 | TI4A |
Aluminum | AL | ALA |
Teflon (PTFE) | PE | PEA |
To order, select the appropriate part number and add a material designator to it.
- To order an assembled fitting, add a material designator and an assembled designator. Example: AU-8- SSA
- To order an item, add only a material designator to the part number. Examples: Stainless steel nut 1/2 "steel: AN-8 - SS Front ring in stainless steel. 1/2 inch steel: AFF-8-SS
This section of the catalog presents connections, adapters and splitters - tees of high and low pressure, connectors for instrumentation instrumentation, connecting parts of selected devices and their components, manufactured by "RosService".
Selective device connections, high pressure pipe connectors are impulse line parts that are an integral part of any high pressure process line project for monitoring working media in pipelines. The decision of our company to manufacture connections for select devices and connectors, impulse line splitters is not accidental. We are one of the high-quality and advanced Russian suppliers needle valves shut-off valves for pressure gauges and other instrumentation that have received accreditation to Rosneft.
Our regular customers have taken the initiative and expressed their desire: - A complex supply of a valve under control is required measuring fittings+ connection and transportation of the medium to a pressure gauge or other instrumentation, i.e. selection device and its connections purchased in one place and from reliable partner delivering quality products on time. An example of the complex of our complex supply of connections, this is one of the designs ZK14 pressure selection device.
Impulse line connections and connectors are varied, ready-made standard designs selected devices specified in the collections of drawings of the SKZ. In a non-standard design, the design of the selection device can be assembled by you yourself from parts of our production for your technical requirements select device configuration.
Let's make connectors and connections impulse pipes(high pressure pipelines) or connections of selected pressure and vacuum devices:
- bosses and pipe fittings, (connection and connection of sampling devices and sampling damper tubes)
- sampling damper tubes (sampling impulse tubes of Perkins straight, angled, loop-shaped)
- connectors and tees with a ball nipple (adapters from pipe to nipple, branch to nipple connection)
- connectors and tees with end stop rings (for high pressure pipes)
- connectors and tees with flared pipes - adapters and splitters for pipes with a diameter of 8mm. including the transition from metal to polyethylene (silicone) tube.
- nipples, adapters, plugs - plugs, welded tees for pipes 14 mm.
PDF catalog "RosService": "Needle valves, selection devices, couplings and connectors, splitters of impulse and technological lines"
(July 2013. ,
Download PDF archive.rar size 3Mb).
Below are the details of the connections of the impulse lines of our production, they are also used in selective devices, for pressure up to PN 250 kgf / cm 2, for working media with temperatures up to 400 ° C, versions (materials) - steel 20, steel 09G2S, stainless steel 12X18H10T.
Lugs.
Lugs straight BP 01 - 05, beveled BS 01 - welded part for connecting the structure of the selection device.
Needle shut-off valves.
Needle valves PN up to 250 kgf / cm 2 (VI - needle valves) impulse lines are installed.
Sample tubes.
Selected damper tubes Ru up to 160 kgf / cm 2 (Perkins tubes) straight, angular, loop: ОУ1 - ОУ8 for the selection device.
Couplings with thrust washers.Clamping ring connections: ST14 tee, SPP8 bulkhead, SV14 screw-in, SP14 straight through, CH14 screw-on
Nipple connections.Nipple connections impulse lines, another name for nipple adapters: NSN 14 screw ( internal thread), NSV 14 screw-in (external thread)
Ball nipple connections.Ball nipple connections impulse lines: adapter for SSHV14 - M20 nipple screw-in, high pressure pipe splitter - SSHT14 tee.
Flare connections.Tees and Connections for 8mm pipes with expanding pipes with a diameter of 8mm: SMN8 screw-on, SMT8 tee, SM8 straight through, SMB6 screw-in.
Plugs - plugs. Plugs - plugs for temporary closure of technological openings of high-pressure pipelines: straight plug P-M20; plug - conical plug P-K1 / 2.
Pipe adapters. M20x1.5 - R1 / 2; М20х1,5 - G1 / 2 pipe adapters or a selected device, on a pressure gauge or other instrumentation. An example of an application is a pressure selection device.
All presented types of connections are universal and are suitable for selective pressure, temperature and vacuum devices. Valves, damper tubes, pipe connections used in the selection device undergo protective galvanic treatment in order to ensure corrosion resistance and durability of operation.
Impulse tube is the main element of pneumatic and hydraulic control systems. The number of control drives in oil refineries and chemical plants is estimated in hundreds, and sometimes thousands. Such numbers are due to the particular complexity technological processes, high level of automation and fire and explosion hazard of production.
One of the most pressing problems at the present time is the lack of detailed instructions for the installation of impulse pipes. The most famous document regulating this area of work is SNiP 3.05.07-85. The laying of pipes is standardized in the chapter "PIPE WIRING" However, these standards and rules indicate only general points, for example, such as:
paragraph "3.21. Piping lines, with the exception of those filled with dry gas or air, must be laid with a slope that allows condensate drainage and gas (air) removal, and have devices for their removal."
With extensive experience in installation different systems, the company "NTA-Prom" conducts training of maintenance services in various directions. In particular, our seminars provide training in the laying of impulse pipes and how to work with it.
It should be noted that the use of an impulse tube when laying pneumatic and hydraulic systems is much more convenient than using thick-walled pipes... A number of arguments can be cited to prove the above:
- During installation, the impulse pipe can be bent using a special tool. When using thick-walled pipes, it is absolutely necessary to take into account and lay down all the bends, bends and transitions in advance.
- Fewer connections than pipe results in fewer potential leak paths.
- When the impulse tube is bent, there are no right angles as when using bends. Accordingly, when transporting the medium in pipelines from a seamless tube, there is a lower pressure drop and less likelihood of water hammer and destructive vibrations of the pipeline.
- Impulse lines are more economical in terms of materials and work space.
Below is a short summary of the most important impulse piping principles:
1.The tube must be positioned following the basic rules:
1.1 Avoid placing tubing directly in front of various structural connections, doors, manholes and equipment.
1.2 Do not block access to equipment controls and emergency stop buttons.
1.3 When laying, it is necessary to provide for the possibility of subsequent repair and maintenance of lines.
1.4 Tubes installed at a low level should not be used as support.
1.5 Tubing should be positioned so that there is no danger of falling.
1.6 Tubes installed on high level should not be used as handrails.
1.7 Tubes should not be used as a stand for other objects
2. When routing tubing, use pipe supports.
2.1 Correct support will limit the effects of impulse and vibration on impulse lines.
2.2 In order to avoid sagging of the pipe, when installing the pipe, long spans without supports should not be formed.
2.3 The pipelines should not be subjected to torsional or linear forces from other equipment (valves, fittings, regulators, etc.)
2.4 The installation interval of the supports is determined based on the characteristics of the medium and the diameter of the tube.
3. Installation of several pipes must be carried out vertically in a row.
3.1 When installing multiple pipes, avoid places where dirt, corrosive media and contaminants can accumulate.
3.2 In the case of horizontal installation of the tube, caused by a special need, the tubes must be retracted into boxes or protective covers.
4. When installing pipes, it is necessary to lay compensation loops:
4.1 Thanks to the use of expansion loops, it is possible to replace the section of the tube between the fittings.
4.2 The use of expansion loops makes it possible to compensate for the contraction and expansion of the tubes during temperature fluctuations.
4.3 The hinges also allow easy access for maintenance and disassembly of fittings.