Which specification stipulates that J422 welding rod cannot be used to weld carbon steel penstock

专业蓝领30年

请教下哪个规范规定不能用J422焊条焊接碳钢压力管道的

2020-03-30 Reply

TuKai

First of all, you need welding

2020-03-30 09:03:41 Reply

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