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What is structural tube?

Fujin Iron and Steel2021-09-29
The national standard adopted by the structural tube is: GB/T8162-1999. The structural tube is used to make various machine parts and structures. Including bicycle pipes, pipe piles, pipes for various structural parts, and bearing pipes. The representative materials include carbon steel, No. 20 and No. 45 steel; alloy steel Q345, 20Cr, 40Cr, 20CrMo, 30-35CrMo, 42CrMo, etc.