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HG 20631-1997

Chinese Standard: 'HG 20631-1997'
Standard IDContents [version]USDSTEP2[PDF] delivered inStandard Title (Description)StatusRelated Standard
HG 20631-1997English1439 Add to Cart Days<=9 (Steel pipe flanges with spiral wound gasket (American System)) Obsolete HG 20631-1997


Standard ID HG 20631-1997 (HG20631-1997)
Description (Translated English) (Steel pipe flanges with spiral wound gasket (American System))
Sector / Industry Chemical Industry Industry Standard
Classification of Chinese Standard J15
Classification of International Standard 23.040.60
Word Count Estimation 36,338
Date of Issue 1997/11/27
Date of Implementation 1998/2/1
Older Standard (superseded by this standard) HGJ 44��76-1991
Adopted Standard ISO 7483-1991, NEQ
Regulation (derived from) Industry-Science [2009] No. 27

Related standard:   HG/T 20631-2009  HG/T 20623-2009
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