Q345B seamless steel pipe

Q345B seamless steel pipe belongs to the low alloy series. Among low-alloy materials, this material is the most common. One of the past names of Q345B pipe is: 16Mn seamless steel pipe.

Q345B seamless steel pipe is a kind of steel pipe material. Q represents the yield of this material, and the 345 behind it refers to the yield value of this material, which is around 345. And will decrease the yield value as the thickness of the material increases.

The external implementation standard of Q345B seamless steel pipe is: GB709, and the internal implementation standard is: GB/T1591-94.

Chemical composition of Q345B seamless pipe:
C: 0.12-0.20
Si: 0.20-0.60
Mn: 1.00-1.60
P:≤0.040
S:≤0.040
Ni:≤0.30
Cr:≤0.30
Cu:≤0.20
V: 0.02-0.15
Nb: 0.015-0.06

Mechanical properties of Q345B seamless pipe:
Tensile Strength: 490-675
Yield strength: ≥345
Elongation: ≥21

Q345A, Q345B, Q345C, Q345D, Q345E. This is the distinction of grades, which represent, mainly, the temperature of the shock is different.

Q345B seamless steel pipe has the characteristics of anti-corrosion and wear resistance, which makes the service life of seamless steel pipe longer.

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