JB 4420-1989 English PDF

Standard ID	USD	BUY PDF	Lead-Days	Standard Title (Description)	Status
JB 4420-1989	RFQ	ASK	6 days	(Boiler welding procedure qualification)	Obsolete

Similar standards

GB/T 16507.2   GB/T 16507.1   GB/T 12145   

Basic data

Standard ID: JB 4420-1989 (JB4420-1989)
Description (Translated English): (Boiler welding procedure qualification)
Sector / Industry: Mechanical & Machinery Industry Standard
Classification of Chinese Standard: J98
Word Count Estimation: 30,383
Date of Issue: 3/27/1989
Date of Implementation: 1/1/1990

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