seamless steel pipes for structures

Steel Grade: 10, 20, 45, 20Mn, 25Mn, Q235, Q295, Q345, 40Mn2, 45Mn2, 27SiMn, 12CrMo, 12CrMoV, 20CrMn

Standard: GB/T 8162-2008

Application: It is used for mechanical structure like making pellet machine and general engineering structures.

Sizes: O.D.: 60mm~219mm, W.T.: 4mm~35mm.


Chemical Composition, Mass Fraction(%): (Q235 for example)

  Steel Grade Quality Level C Si Mn P S Alt
Q235 A 0.22 0.35 1.40 0.030 0.030 -
B 0.20 -
C 0.17 -
D 0.025 0.025 0.020

Mechanical Properties: (Q235 for example)

Steel Grade Quality Level (MPa) tensile strength  lower yield strength (MPa) Elongation (%)  impact test
 W.T.(mm) temperature absorbed energy (KV2/J)
16 >16~30 >30
Q235 A 375~500 235 225 215 25 - -
B +20 27
C 0
D -20


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