S 221斯米克焊丝焊条
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)