标准编号:GB/T 30059-2013中文名称:热交换器用耐蚀合金无缝管英文名称:Seamless corrosion-resisting alloy tubes for heat-exchanger... 上一篇:GB/T 28494-2012 热塑性塑料截止阀下一篇:GB/T 28934-2012 职业经理人培训规范