标题: ISO 8179-1-2017 Ductile iron pipes, fittings, accessories and their joints — E [打印本页] 作者: cc523pate 时间: 2020-12-7 21:24:26 标题: ISO 8179-1-2017 Ductile iron pipes, fittings, accessories and their joints — E
ISO 8179-1-2017 Ductile iron pipes, fittings, accessories and their joints — External zinc-based coating — Part 1: Metallic zinc with finishing layer 作者: admin 时间: 2020-12-10 11:33:51