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Have you seen this welding code before?

2021-03-17View Original

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I’d like to ask everyone: have you seen this welding code before? After seeing it, I doubted the authenticity of this certificate, but the other party insisted that it was an organized exam. I checked and found that TB is an abbreviation for flame brazing, but there is no code for this welding method in the welding examination regulations. I was wondering if it’s just my lack of knowledge; I hope everyone can give me some guidance.
Reply #22021-03-17
I’ve really never seen this welding project code before!

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