标准号:IS 5531 Pt.3-1977
发布日期:1977/12/1 12:00:00
实施日期:1999/12/31 12:00:00
适用范围:This standard ( Part III) lays down the requirements for dimensions and mass of the cast iron plain-end flanged spigots, tees and wyes for use with asbestos-cement pressure pipes.