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English Translations » 历史存档[信息] » Why is there no Q345 material in GB5310 standard steel pipes

Why is there no Q345 material in GB5310 standard steel pipes?

2016-12-26View Original

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Why is there steel grade 20 listed in GB5310, but no material called Q345? What are the advantages of 20 steel over Q345? Cheap price?
Reply #22016-12-26
GB5310 specifies 20# boiler steel, which has better properties than 20# steel
Reply #32016-12-26
What I’m focusing on is not the issue of 20 versus 20G, but rather why 345 cannot be used for boiler steel pipes
Reply #42016-12-26
I’m wondering whether some components in 345 steel might have an adverse effect on its mechanical properties under high temperature and pressure conditions

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Translated at 2026-07-20 22:09:00

Original: https://bbs.hcbbs.com/thread-1655948-1-1.html

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