vataple.com.cnvataple.com.cn/upload/web/44700872.pdf · DIN 18800-7 DIN 18808 135 — Metal active...
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vataple.com.cnvataple.com.cn/upload/web/44700872.pdf · DIN 18800-7 DIN 18808 135 — Metal active gas welding, partly mechanized S235, S275, S355 according to the respective valid