2021 Good Quality Pipeline - Helical-seam carbon steel pipes ASTM A139 Grade A, B, C – Spiral
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, % |
||||
|
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 can easily usually fulfill our respected customers with our very good top quality, very good price tag and excellent support due to we have been more expert and much more hard-working and do it in cost-effective way 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: Malaysia, Ethiopia, Southampton, As a well educated, innovative and energetic staff,we are responsible for all elements of the research, design, manufacturing, sales and distribution. With studying and developing new techniques,we are not only following but also leading the fashion industry. We listen attentively to the feedback from our customers and provide instant communication. You will instantly feel our expertise and attentive service.
By Judy from Poland - 2018.04.25 16:46
A nice supplier in this industry, after a detail and careful discussion, we reached a consensus agreement. Hope that we cooperate smoothly.
By Alice from Nigeria - 2018.07.26 16:51
