普通镀铜碳钢焊丝ER50-6（5公斤小盘）
ER50-6 ER70S-G 用于碳钢及500MPa级高强钢的车辆、建筑、造船、桥梁等结构的焊接。 For welding of carbon steels and 500Mpa high strength steels, used in car, building, ship-building and bridge.
