ISO 559:1977 EN 4d9d2917
Welded or seamless steel tubes for water, sewage and gas
废止
发布日期 :
1977-04-01
实施日期 :
ISO 7259:1988 EN cdcb743f
Predominantly key-operated cast iron gate valves for underground use
废止
发布日期 :
1988-12-29
实施日期 :