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Standard ID	Contents [version]	USD	STEP2	[PDF] delivered in	Standard Title (Description)	Status	Related Standard
HG 20621-1997	English	1279	Add to Cart	Days<=9	(Loose ring welded steel pipe flanges (American System))	Obsolete	HG 20621-1997

Detail Information of HG 20621-1997; HG20621-1997
Description (Translated English): (Loose ring welded steel pipe flanges (American System))
Sector / Industry: Chemical Industry Industry Standard
Classification of Chinese Standard: J15
Classification of International Standard: 23.040.60
Word Count Estimation: 32,000
Date of Issue: 27/11/1997
Date of Implementation: 1/2/1998
Older Standard (superseded by this standard): HGJ 44��76-1991
Adopted Standard: ISO 7005-1-1992, NEQ; ANSI B16.5-1988, NEQ
Regulation (derived from): Industry-Science [2009] No. 27

Related standard:   HG/T 20611-2009  HG/T 20612-2009