https://jq.qq.com/?_wv=1027&k=52vpRrFhttps://jq.qq.com/?_wv=1027&k=52vpRrFhttps://jq.qq.com/?_wv=1027&k=52vpRrFhttps://jq.qq.com/?...
GB T 985.1-2008 气焊、焊条电弧焊、气体保护焊和高能束焊的推荐坡口.pdf
热强钢焊条Coveredelectrodesformanualmetalarcweldingofcreep-resistingsteels(ISO3580:2010,Weldingconsumables—Coveredelectrodesforma...
非合金钢及细晶粒钢焊条Coveredelectrodesformanualmetalarcweldingofnon-alloyandfinegrainsteels(ISO2560:2009,Weldingconsumables—Cove...
不锈钢焊条Coveredelectrodesformanualmetalarcweldingofstainlessandheat-resistingsteels(ISO3581:2003,Weldingconsumables—Coveredelec...
www.bzfxw.comwww.bzfxw.comwww.bzfxw.comwww.bzfxw.com
【国家标准】 GB T 3669-2001 铝及铝合金焊条 标准.pdf