The difference between 45# seamless steel pipe and 20# seamless steel pipe

The difference between 45# seamless Steel Pipe and 20# seamless steel pipe
45# seamless steel pipe and 20# seamless steel pipe have different main carbon contents. 45# carbon steel content is 42-48, and 20# steel pipe is 18-22.
Followed by 45 # seamless steel pipe and 20 # seamless steel pipe tensile strength and hardness are different.
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