[TV Ahn]강관엘보용접 40A(에너지관리 기능장/배관기능장) SMAW Stick Welding-welded steel pipe鎔接鋼管
SMAW Stick Welding-welded steel pipe
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brazing is very easy. Just do as I do.
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에너지관리기능장 실기 작업형 | 배관기능장 실기 작업형 | 제39강 강관엘보용접(40A)(E4313)
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All the welders get the technology. Take it!
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[How much can be fixed?] Heating a pipe flange distorted by welding to remove distortion
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에너지관리,배관기능장 2020년 용접봉변경후 플랜지용접( 4313)
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