HS201紫铜焊丝特制紫铜焊丝量大从优
HS201紫铜焊丝HS221锡黄铜焊丝HS212锡青铜焊丝
QAl9-2铜焊丝QAl9-4铝青铜焊丝
Cu237铝青铜焊条T237铝青铜焊条
S221锡黄铜焊丝S201紫铜焊丝S211硅青铜焊丝
批发铜焊丝冀冲锋不锈钢药芯气保焊丝量大从优
上海斯米克S301纯铝焊丝SAL1070纯铝焊丝
CuNi30白铜焊丝 B30铜焊丝 ERCuNi铜镍焊丝 CuNi30Fe铁白铜焊丝
Cu237铝青铜焊条T237铝青铜焊条S211硅青铜焊丝S221锡黄铜焊丝
T237铝青铜焊条 T237铝锰青铜焊条