Standard ID: HG 21520-1995
Standard Name: Vertical lifting cover with neck flat welding flange manhole. Attached picture
Chinese Name: 垂直吊盖带颈平焊法兰人孔.附图
Standard category:Chemical industry standards (HG)
state:Abolished
Date of Release1995-12-28
Date of Implementation:1996-03-01
Date of Expiration:2006-01-01
Standard Classification Number:Chemical Industry>>Chemical Machinery and Equipment>>G91 Chemical Machinery and Equipment Parts
alternative situation:Replaced by HG/T 21520-2005