2021 Good Quality Pipeline - Helical-seam carbon steel pipes ASTM A139 Grade A, B, C – Spiral

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Our growth depends on the superior equipment ,exceptional talents and continuously strengthened technology forces for Large Sewer Pipe , Carbon Steel Pipe Catalogue , SPIRALLY WELDED STEEL PIPES ASTM A252 Factories , We aim at Ongoing system innovation, management innovation, elite innovation and market innovation, give full play to the overall advantages, and constantly improve service quality.

2021 Good Quality Pipeline - 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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We emphasize enhancement and introduce new solutions into the market just about every year for 2021 Good Quality Pipeline - Helical-seam carbon steel pipes ASTM A139 Grade A, B, C – Spiral , The product will supply to all over the world, such as: Guatemala, Cape Town, United Arab Emirates, Our company has abundant strength and possesses a steady and perfect sales network system. We wish we could establish sound business relationships with all customers from at home and abroad on the basis of mutual benefits.

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In our cooperated wholesalers, this company has the best quality and reasonable price, they are our first choice.

By Rose from United Arab Emirates - 2018.05.15 10:52

The factory workers have rich industry knowledge and operational experience, we learned a lot in working with them,we are extremely grateful that we can encount a good company has excellent wokers.

By Betty from Vietnam - 2017.08.28 16:02

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