용접재료 AWS
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용접 재료 분류(AWS 또는 기타) 번호란 무엇이며, SFA NO와는 어떤 차이가 있나요?
표준인 “ASWE 재료 분류 및 그와 UNS와의 관계”를 확인해 볼 수 있습니다”
AWS 분류번호...ER308 같은 것이에요..바로 등급입니다.. SFA 번호. 이것은 큰 표준 번호입니다..
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