标题: ISO 5256:1985 Steel pipes and fittings for buried or submerged pipe lines — Ex [打印本页] 作者: cc523pate 时间: 2018-8-22 21:25:37 标题: ISO 5256:1985 Steel pipes and fittings for buried or submerged pipe lines — Ex
ISO 5256:1985 Steel pipes and fittings for buried or submerged pipe lines — External and internal coating by bitumen or coal tar derived materials 作者: admin 时间: 2018-8-29 20:21:56