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 10221:1993 EN 3640d00d
Ductile iron pipelines — Rubber sealing rings for pipelines carrying potable water
废止
发布日期 :
1993-03-18
实施日期 :