标题: ASTM A 53 Standard Specification for Pipe, Steel, Black and Hot-Dipped, Zinc-Coa [打印本页] 作者: qzcp 时间: 2013-5-21 06:55:32 标题: ASTM A 53 Standard Specification for Pipe, Steel, Black and Hot-Dipped, Zinc-Coa
ASTM A 53 Standard Specification for Pipe, Steel, Black and Hot-Dipped, Zinc-Coa Seamless