ObsoleteGo to latest versionHG/T 21520-2014

HG/T 21520-2005The vertical hanging cover with neck flat welding flange manhole (English PDF)

垂直吊盖带颈平焊法兰人孔

HG/T 21520 | Evolution and historical versions

Std ID	Title	Status
HG/T 21520-2014	Hubbed Slip-on-welding Flange Manholes with Davit to Vertical Cover	Valid
HG/T 21520-2005	The vertical hanging cover with neck flat welding flange manhole	Obsolete

HG/T 21520-2005 is obsolete. It has been replaced by HG/T 21520-2014. This page sells the obsolete edition, for projects and contracts that still cite it.

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Level / Type

Industry · Recommended

Issue date

July 10, 2005

Implementation date

January 1, 2006

Scope

HG/T 21520-2005 is the English-translated version of 垂直吊盖带颈平焊法兰人孔.

HG/T 21520-2005 is the Chinese industry standard "The vertical hanging cover with neck flat welding flange manhole". It was issued on July 10, 2005, and took effect on January 1, 2006. It is obsolete: it has been replaced by HG/T 21520-2014.

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Document preview — HG/T 21520-2005

Document data

1 Document data

Sector: Chemical Industry (industry standard).

Date of issue: 2005-07-10.

Date of implementation: 2006-01-01.

Status: obsolete, replaced by HG/T 21520-2014.

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This preview omits tables, figures, formulas and parts of the technical clauses. The complete document — all pages — is available in the English PDF.

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