Factory Wholesale Sewer Line - Helical-seam carbon steel pipes ASTM A139 Grade A, B, C – Spiral

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Using a full scientific good quality administration system, very good quality and superior faith, we win good standing and occupied this discipline for Helical Seam Manufacturers , Astm A252 Gr3 , SPIRALLY WELDED STEEL PIPES ASTM A252 Factories , In case you are on the lookout for a high quality, quick delivery, very best after support and great value supplier in China for long-term small business connection, we'll be your best choice.

Factory Wholesale Sewer Line - 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 pursue the administration tenet of Quality is exceptional, Assistance is supreme, Reputation is first, and will sincerely create and share success with all clients for Factory Wholesale Sewer Line - Helical-seam carbon steel pipes ASTM A139 Grade A, B, C – Spiral , The product will supply to all over the world, such as: Oslo, Cyprus, Romania, Our product quality is one of the major concerns and has been produced to meet the customer's standards. Customer services and relationship is another important area which we understand good communication and relationships with our customers is the most significant power to run it as a long term business.

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Managers are visionary, they have the idea of mutual benefits, continuous improvement and innovation, we have a pleasant conversation and Cooperation.

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This is a reputable company, they have a high level of business management, good quality product and service, every cooperation is assured and delighted!

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