S 221斯米克铜合金焊丝
S221Cu60Sn1Si0.3ZnRem.Meltingpointisabout890℃.Gasweldingandcarbonarcweldingofbrass,alsobrazeweldingofcopper,steelandcastiron.熔点约890℃。黄铜气焊及碳弧焊用，也可钎焊铜、钢、铸铁)
主营：焊条、焊丝、焊粉、焊剂、粉块、焊片
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