
Metallic flanges Part 1: Steel flanges
出版:International Organization for Standardization

专家解读视频
NBN E 51 003:1988 - Identical
JIS B 2220:2004 - Identical
JIS B 2238:1996 - Equivalent
AS/NZS 4331.1:1995 - Identical
KS B ISO 7005-1:2007 - Identical