Manufacturing Companies For Gas Lines - Helical-seam carbon steel pipes ASTM A139 Grade A, B, C – Spiral

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We insist on offering high-quality production with great enterprise concept, honest product sales and also the finest and fast service. it will bring you not only the superior quality solution and huge profit, but the most significant should be to occupy the endless market for Welding Black Pipe , Painting Steel Pipe , S355 JR Spiral Steel Pipe Manufacturers , With the development of society and economy, our company will keep a tenet of Focus on trust, quality the first, moreover, we expect to create a glorious future with every customer.

Manufacturing Companies For Gas Lines - 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 personnel are always in the spirit of continuous improvement and excellence, and together with the top-quality good quality solutions, favorable selling price and superior after-sales providers, we try to acquire each customer's rely on for Manufacturing Companies For Gas Lines - Helical-seam carbon steel pipes ASTM A139 Grade A, B, C – Spiral , The product will supply to all over the world, such as: The Swiss, Rome, British, We attained ISO9001 which provides solid foundation for our further development. Persisting in High quality, Prompt Delivery, Competitive Price, we have established long-term cooperation with clients from both overseas and domestically and get new and old clients' high comments. It is our great honor to meet your demands. We are sincerely expecting your attention.

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With a positive attitude of regard the market, regard the custom, regard the science, the company works actively to do research and development. Hope we have a future business relationships and achieving mutual success.

By Emma from Jakarta - 2018.06.18 19:26

Wide range, good quality, reasonable prices and good service, advanced equipment, excellent talents and continuously strengthened technology forces，a nice business partner.

By Eden from Juventus - 2018.09.21 11:01

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