Pipe ordered under this specification shall be suitable for bending, flanging, and similar forming operations, and for welding. When the steel is to be welded, it is presupposed that a welding procedure suitable to the grade of steel and intended use or service will be utilized.
ASTM A106 seamless steel pipe are produced either by cold-drawn or hot rolled, as specified.
Manufacture:Seamless process ,cold drawn or hot rolled
Cold drawn: O.D.: 15.0~100mm W.T.: 2~10mm
Hot rolled : O.D.: 25~700mm W.T.: 3~50mm
Grade: Gr.A ,Gr.B, Gr.C.
Length: 6M or specified length as required.
Ends: Plain End, Beveled End, Threaded
Grade and Chemical Composition (%)
Grade |
C≤ |
Mn |
P≤ |
S≤ |
Si≥ |
Cr≤ |
Cu≤ |
Mo≤ |
Ni≤ | V≤ |
A |
0.25 |
0.27-0.93 |
0.035 | 0.035 | 0.10 | 0.40 | 0.40 | 0.15 | 0.40 | 0.08 |
B |
0.30 |
0.29-1.06 |
0.035 |
0.035 | 0.10 |
0.40 |
0.40 |
0.15
|
0.40 | 0.08 |
C |
0.35 |
0.29-1.06 |
0.035 |
0.035 |
0.10 |
0.40 | 0.40 | 0.15 | 0.40 | 0.08 |
Mechanical Properties:
Grade |
Rm |
Mpa Yield Point |
A% Elongation |
Delivery Condition |
A |
≥330 | ≥205 | 20 | Annealed |
B |
≥415 | ≥240 |
20 |
Annealed |
C |
≥485 | ≥275 | 20 | Annealed |
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Dimension Tolerances:
Pipe Type
Pipe Sizes Tolerances Cold Drawn
OD ≤48.3mm ±0.40mm ≥60.3mm ±1%mm WT ±12.5%
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- In principle, it should be in manufacturing condition, or a cold finish condition, or an annealing condition. Other heat treatments are available upon request
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A sufficient number of visual surface imperfections to provide seasonable assurance is necessary. The defect shall be removed or cut off within the limits of requirements on length . The finished pipe shall be reasonably straight.
- Manufacturer’s name or mark
- Specification number(year-date or required)
- Size( OD, W.T, length)
- Grade( A or B)
- Type of pipe( F, E, or S)
- Test pressure( seamless steel pipe only)
- Heat Number
- Any additional information specified in the purchase order.
- Bare pipe or Black / Varnish coating ( customized);
- 6”and below in bundles with two cotton slings ;
- Both ends with end protectors;
- Plain end , bevel end(2”and above with bevel ends, degree: 30~35°) ,threaded and coupling;
- Marking.