OEM Manufacturer Flexible Gas Line - Helical-seam carbon steel pipes ASTM A139 Grade A, B, C – Spiral

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We keep improving and perfecting our products and service. At the same time, we work actively to do research and development for Fbe Coating Standards , Pipe And Piling Supplies , Gas Pipe Welding , Together with our efforts, our products and solutions have won the trust of clients and been very salable each here and abroad.

OEM Manufacturer Flexible Gas 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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Our company insists all along the quality policy of product quality is base of enterprise survival; customer satisfaction is the staring point and ending of an enterprise; persistent improvement is eternal pursuit of staff and the consistent purpose of reputation first, customer first for OEM Manufacturer Flexible Gas Line - Helical-seam carbon steel pipes ASTM A139 Grade A, B, C – Spiral , The product will supply to all over the world, such as: Jamaica, Malta, Suriname, We've got constructed strong and long co-operation relationship with an enormous quantity of companies within this business in Kenya and overseas. Immediate and professional after-sale service supplied by our consultant group has happy our buyers. Thorough Info and parameters from the merchandise will probably be sent for you for any thorough acknowledge. Free samples may be delivered and company check out to our corporation. n Kenya for negotiation is constantly welcome. Hope to get inquiries type you and construct a long-term co-operation partnership.

Flexible Gas Line