Well-Designed Gas Line Plumbing - Helical-seam carbon steel pipes ASTM A139 Grade A, B, C – Spiral

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Well-Designed Gas Line Plumbing - Helical-seam carbon steel pipes ASTM A139 Grade A, B, C – Spiral Detail:

Mechanical Property

Grade A Grade B Grade C Grade D Grade E
Yield strength, min, Mpa(KSI) 330(48) 415(60) 415(60) 415(60) 445(66)
Tensile strength, min, Mpa(KSI) 205(30) 240(35) 290(42) 315(46) 360(52)

Chemical Composition

Element

Composition, Max, %

Grade A

Grade B

Grade C

Grade D

Grade E

Carbon

0.25

0.26

0.28

0.30

0.30

Manganese

1.00

1.00

1.20

1.30

1.40

Phosphorus

0.035

0.035

0.035

0.035

0.035

Sulfur

0.035

0.035

0.035

0.035

0.035

Hydrostatic Test

Each length of pipe shall be tested by the manufacturer to a hydrostatic pressure that will produce in the pipe wall a stress of not less than 60% of the specified minimum yield strength at room temperature. The pressure shall be determined by the following equation:
P=2St/D

Permissible Variations In Weights and Dimensions

Each length of pipe shall be weighed separately and its weight shall not vary more than 10% over or 5.5% under its theoretical weight, calculated using its length and its weight per unit length.
The outside diameter shall not vary more than ±1% from the specified nominal outside diameter.
Wall thickness at any point shall not more than 12.5% under the specified wall thickness.

Length

Single random lengths: 16 to 25ft(4.88 to 7.62m)
Double random lengths: over 25ft to 35ft(7.62 to 10.67m)
Uniform lengths: permissible variation ±1in

Ends

Pipe piles shall be furnished with plain ends, and the burrs at the ends shall be removed
When the pipe end specified to be bevel ends, the angle shall be 30 to 35 degree


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Well-Designed Gas Line Plumbing - Helical-seam carbon steel pipes ASTM A139 Grade A, B, C – Spiral detail pictures

Well-Designed Gas Line Plumbing - Helical-seam carbon steel pipes ASTM A139 Grade A, B, C – Spiral detail pictures


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While in the past few years, our organization absorbed and digested innovative technologies both equally at home and abroad. Meanwhile, our organization staffs a group of experts devoted for the advancement of Well-Designed Gas Line Plumbing - Helical-seam carbon steel pipes ASTM A139 Grade A, B, C – Spiral , The product will supply to all over the world, such as: Melbourne, Ethiopia, Chicago, We have to continue to uphold the quality, comprehensive, efficient business philosophy of honest, responsible, innovativespirit of service, abide by the contract and abide by reputation, first-class products and improve service welcome overseas customers patrons.
  • The after-sale warranty service is timely and thoughtful, encounter problems can be resolved very quickly, we feel reliable and secure.
    5 Stars By Eartha from kazan - 2018.05.15 10:52
    Although we are a small company, we are also respected. Reliable quality, sincere service and good credit, we are honored to be able to work with you!
    5 Stars By Marcie Green from Pakistan - 2017.09.22 11:32
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