New Fashion Design For Underground Gas Pipe - Helical-seam carbon steel pipes ASTM A139 Grade A, B, C – Spiral

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Having a positive and progressive attitude to customer's fascination, our organization constantly improves our solution high-quality to fulfill the requirements of shoppers and further focuses on safety, reliability, environmental prerequisites, and innovation of High-Quality A252 GRADE 1 Steel Pipe , Repairing Sewer Line , Piling Pipe , Any needs from you'll be paid out with our best notice!

New Fashion Design For Underground Gas Pipe - 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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Our target should be to consolidate and improve the high-quality and repair of current goods, in the meantime regularly produce new solutions to meet unique customers' needs for New Fashion Design For Underground Gas Pipe - Helical-seam carbon steel pipes ASTM A139 Grade A, B, C – Spiral , The product will supply to all over the world, such as: Palestine, Pakistan, Nigeria, Our tenet is integrity first, quality best. Now we have confidence in providing you with excellent service and ideal merchandise. We sincerely hope we can establish win-win business cooperation with you in the future!

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