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Database: 189760 (18 Oct 2025)
HG/T 21531-2014 English PDF
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HG/T 21531-2014
: Welding neck flange handholes
Status: Valid
HG/T 21531: Evolution and historical versions
Standard ID
Contents [version]
USD
STEP2
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Standard Title (Description)
Status
PDF
HG/T 21531-2014
English
339
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3 days [Need to translate]
Welding neck flange handholes
Valid
HG/T 21531-2014
HG/T 21531-2005
English
RFQ
ASK
9 days [Need to translate]
Weld neck flanges hand hole
Obsolete
HG/T 21531-2005
HG 21531-1995
English
319
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3 days [Need to translate]
(Weld neck flange hand hole)
Obsolete
HG 21531-1995
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HG/T 21521
Basic data
Standard ID
HG/T 21531-2014 (HG/T21531-2014)
Description (Translated English)
Welding neck flange handholes
Sector / Industry
Chemical Industry Standard (Recommended)
Classification of Chinese Standard
G91
Classification of International Standard
11.120.99
Word Count Estimation
13,137
Date of Issue
7/9/2014
Date of Implementation
11/1/2014
Older Standard (superseded by this standard)
HG/T 21531-2005
Quoted Standard
HG/T 20592-2009; HG/T 20606-2009; HG/T 20607-2009; HG/T 20609-2009; HG/T 20610-2009; HG/T 20612-2009; HG/T 20613-2009; HG/T 21514
Regulation (derived from)
Ministry of Industry and Information Technology Notice No. 47 of 2014
Issuing agency(ies)
Ministry of Industry and Information Technology
Summary
This Standard specifies the type of weld neck flange hand hole, technical conditions and markers. This Standard applies only to the chemical, petrochemical plants and other similar devices nominal pressure PN25 ~ PN63 steel weld neck flange hand hole.