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Alloy Steel Pipe

Generally, alloy steel pipe contains relatively more Cr while the ordinary carbon steel seamless pipe contains no or less alloy component, so this alloy pipe has more remarkable resistance to high temperature, low temperature and corrosion. In addition, it has more functions and higher value in use than common seamless pipe, thus finding wide applications in such industries as oil, aerospace, chemical, power, boiler, military, etc.

As an authorized steel and metal supplier, N-STEEL has cooperated with a lot of well renowned steel plants at home and abroad for a long time. The alloy steel pipe we supply comes with a wide external diameter range of 19mm-711mm, wall thickness of 1.65mm-50mm and length of 6m-11.8m. Sufficient supply of such industrial pipe is guaranteed.

If you want to know more details about this product, please feel free to contact us!

Technical Parameters of Alloy Steel Pipe

Chemical Composition (%)
Standard Steel grade C Mn Si Cr Mo V S P
ASTM A335 P1 0.10 ~0.20 0.30 ~0.80 0.10 ~0.50   0.44 ~0.65   ≤0.045 ≤0.045
P11 ≤0.15 0.30 ~0.60 0.50 ~1.00 1.00 ~1.50 0.44 ~0.65   ≤0.030 ≤0.030
P12 ≤0.15 0.30 ~0.61 ≤0.50 0.80 ~1.25 0.44 ~0.65   ≤0.045 ≤0.045
P2 0.10 ~0.20 0.30 ~0.61 0.10 ~0.30 0.50 ~0.81 0.44 ~0.65   ≤0.045 ≤0.045
P22 ≤0.15 0.30 ~0.60 ≤0.50 1.90 ~2.60 0.87 ~1.13   ≤0.030 ≤0.030
P5 ≤0.15 0.30 ~0.60 ≤0.50 4.00 ~6.00 0.45 ~0.65   ≤0.030 ≤0.030
P9 ≤0.15 0.30 ~0.60 0.25 ~1.00 8.00 ~10.00 0.90 ~1.10   ≤0.030 ≤0.030
P91 0.08-0.12 0.30-0.60 0.2-0.5 8.00 ~9.5 0.85 ~1.05   ≤0.030 ≤0.030
Mechanical Properties
Standard Steel grade   σs σb δs
(MPa) (MPa) (%)
aASTM A335 P1 207 379 22
P11 207 413 22
P12 207 413 22
P2 207 379 22
P22 207 413 22
P5 207 413 22
P91 415 585 22
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