Chinese Wholesale Line Pipe - Helical-seam carbon steel pipes ASTM A139 Grade A, B, C – Spiral
Chinese Wholesale Line 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, % |
||||
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
Product detail pictures:
Related Product Guide:
We know that we only thrive if we can guarantee our combined price competiveness and quality advantageous at the same time for Chinese Wholesale Line Pipe - Helical-seam carbon steel pipes ASTM A139 Grade A, B, C – Spiral , The product will supply to all over the world, such as: Honduras, Uganda, Dubai, The quality of our merchandise is equal to OEM's quality, because our core parts are the same with OEM supplier. The above items have passed professional certification, and we not only can produce OEM-standard items but we also accept Customized Merchandise order.
By Ida from Netherlands - 2018.08.12 12:27
The company has a good reputation in this industry, and finally it tured out that choose them is a good choice.
By Eunice from Chile - 2018.05.13 17:00