SCH40 Seamless Steel Pipe

How much pressure can SCH40 Seamless Steel Pipe withstand? What is the specification of the SCH 40 pipe?
Let’s find out in the article below!

How much pressure can SCH 40 seamless steel pipe withstand?

Seamless steel pipes are often used for pipeline systems under high pressure, such as pipelines for gasoline, oil, gas, compressed air, boilers, boilers, hot steam, etc.
The characteristic of these works is that when an accident occurs, it will cause great damage. Therefore, the stage of calculation and selection of pipe size to suit the requirements of the project is extremely important.
Below, Tiger Steel would like to send the table of working pressure and bursting pressure of seamless steel pipe according to API 5L, ASTM A106, and ASTM A53 Gr B standards.
PIPE SIZE STANDARD THICKNESS – STD – SCH40
Inches Explosion pressure (Psi) Working pressure (Psi)
1/2 10380 1300
3/4 8610 1080
1 8090 1010
1 1/4 6745 840
1 1/2 6100 760
2 5185 650
2 1/2 5650 710
3 4940 620
3 1/2 5610 700
4 5270 660
5 4630 580
6 4220 530
7 3940 490
số 8 3720 470
9 3540 445
10 3380 420
12 2930 370

1 psi (lb/in2) = 6,894.8 Pa (N/m2) = 6.895×10-3 N/mm2 = 6.895×10-2 bar 

See more: What is Psi?

The degree of resistance to pressure on the pipe wall will depend on many factors such as:

  • Steel Grade
  • Pipe diameter
  • Tube Thickness
  • Working temperature

Does Hoa Phat, SeAH manufacture seamless steel pipes?

SCH40 Seamless Steel Pipe
Many customers are contacting Hoa Phat steel pipe, and SeAH seamless steel pipe… However, up to now in Vietnam, no factory has been able to produce this product.
SeAH Vietnam factory currently only produces welded steel pipes according to ASTM A53 standards with two main grades, SCH40 and SCH80.

Specification table of SCH 40 seamless steel pipe

 PIPE SIZE
(INCH)
DIAMETER
(MM)
PIPE THICKNESS (MM) Horizontal Area
(MM2)
LENGTH OF PIPE
(FT ON SQ. FOOT SURFACE)
Volume
(FT 3 / FT)
WEIGHT
Outside Inside Outside Inside Steel Outer surface
(ft)
Inner surface
(ft)
(lb/ft) (kg / m)
1/8 10.3 6.86 1.78 83.9 38.7 45.16 9.43 14.20 4 0.24 0.36
¼ 13.7 9,1 2.29 148 64.5 83.87 07.07 10.49 7 0.42 0.63
3/8 17.1 12.4 2,29 232.26 123 110 5.66 7.75 13 0.57 0.84
½ 21.3 15.7 2.79 355 194 161 4.55 6.14 21 0.85 1.26
¾ 26.7 20.8 2,79 561 342 213 3.64 4.64 37 1.13 1.68
1 33.4 26.7 3,30 877 555 316.13 2.90 3.64 60 1.68 2.50
1 ¼ 42.2 35.1 3.56 1394 968 432 2.30 2.77 104 2.27 3.38
1 ½ 48.3 40.9 3.81 1832 1316 516 02.01 2.37 141 2.72 04.04
2 60.3 52.6 3,81 2858 2168 697 1.61 1.85 233 3.65 5.43
2 ½ 73 62.7 5,08 4187 3090 1097 1.33 1.55 333 5.79 8.62
3 88.9 78 5.59 6206 4768 1439 01.09 1.25 513 7.58 11.27
3 ½ 102 90.2 5,8 8103 6381 1729 0.95 01.08 687 9.11 13.56
4 114 102 6,1 10258 8213 2045 0.85 0.95 884 10.79 16.06
5 141 128 6.6 15677 12903 2774 0.69 0.76 1.389 14.61 21.74
6 168 154 7.11 22239 18639 3600 0.58 0.63 2.006 18.97 28.23
8 219 203 8.13 37690 32271 5419 0.44 0.48 3.552 28.55 42.49
10 273 255 9.4 58555 50871 7677 0.36 0.38 5.476 40.48 60.24
12 324 303 10.4 82348 72193 10155 0.30 0.32 7.763 53.60 79.77
14 356 334 11,2 99316 87290 12026 0.27 0.28 9.354 63.00 93.75
16 406 381 12.7 129709 114000 15710 0.24 0.25 1.2230 78.00 116.08
18 457 429 14.2 164419 144516 19903 0.21 0.23 1.5550 105.00 156.26
20 508 478 15 202677 179354 23323 0.19 0.20 1.9260 123.00 183.05
24 610 575 17.5 291870 259419 32452 0.16 0.17 2.7930 171.00 254.48
In addition to SCH40 seamless steel pipe, Tiger Steel also trades black steel pipes, galvanized steel pipes, black square steels, galvanized Hoa Phat, SeAH, …; large diameter steel pipe.

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