Fast Delivery Gas Pipes - Helical-seam carbon steel pipes ASTM A139 Grade A, B, C – Spiral

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With our leading technology also as our spirit of innovation,mutual cooperation, benefits and advancement, we'll build a prosperous future together with your esteemed organization for Flexible Gas Pipe , X70 SSAW Line Pipe , Pipe And Piling Supplies , We give priority to quality and customer satisfaction and for this we follow stringent quality control measures. We have in-house testing facilities where our products are tested on every aspect at different processing stages. Owning to latest technologies, we facilitate our customers with customized production facility.

Fast Delivery Gas Pipes - 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, %
Element	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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It is a great way to further improve our products and repair. Our mission is always to create innovative products to prospects with a superior expertise for Fast Delivery Gas Pipes - Helical-seam carbon steel pipes ASTM A139 Grade A, B, C – Spiral , The product will supply to all over the world, such as: Greek, Dominica, Comoros, 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.

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Problems can be quickly and effectively resolved, it is worth to be trust and working together.

By Johnny from Slovak Republic - 2018.05.13 17:00

The factory workers have a good team spirit, so we received high quality products fast, in addition, the price is also appropriate, this is a very good and reliable Chinese manufacturers.

By Agatha from France - 2018.11.04 10:32

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