S 221铜焊丝
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：银焊条，银焊丝，铜焊条，铜焊丝，铝焊条，铝焊丝，镍基焊条，镍基焊丝，钴基焊条，钴基焊丝
| 业务 QQ： |