Manufacturer For Welded Pipe - Helical-seam carbon steel pipes ASTM A139 Grade A, B, C – Spiral
Manufacturer For Welded 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've been committed to offering easy,time-saving and money-saving one-stop purchasing service of consumer for Manufacturer For Welded Pipe - Helical-seam carbon steel pipes ASTM A139 Grade A, B, C – Spiral , The product will supply to all over the world, such as: Sao Paulo, Bangkok, Swedish, Based on products and solutions with high quality, competitive price, and our full range service, we have accumulated experienced strength and experience, and we've built up a very good reputation in the field. Along with the continuous development, we commit ourselves not only to the Chinese domestic business but also the international market. May you moved by our high quality items and passionate service. Let's open a new chapter of mutual benefit and double win.

The enterprise has a strong capital and competitive power, product is sufficient, reliable, so we have no worries on cooperating with them.
