... durable 4.with the low price Qingxian Yongsheng Wire Co., Ltd., which was established in2001,Yongsheng ... ,15kg,18kg,20kg chemical composition of welding wire(%)CMnSiPSCrNiCu0.06~0.151.40~1.850. ... alloy steel , such as container building , construction machine , railway construction , pressure vessel for semi-auto ... ,15kg,18kg,20kg chemical composition of welding wire(%)CMnSiPSCrNiCu0.06~0.151.40~1.850. ...