HOME Cart(0) Quotation About-Us Policy PDFs Standard-List
www.ChineseStandard.net Database: 189760 (25 Oct 2025)

NB/T 20450.4-2017 English PDF

Standard ID	Contents [version]	USD	STEP2	[PDF] delivered in	Standard Title (Description)	Status	PDF
NB/T 20450.4-2017	English	RFQ	ASK	6 days [Need to translate]	Alternative welding code for mechanical components of PWR nuclear islands Part 4: Production welds and heat treatment	Obsolete	NB/T 20450.4-2017

PDF similar to NB/T 20450.4-2017

Standard ID	NB/T 20450.4-2017 (NB/T20450.4-2017)
Description (Translated English)	Alternative welding code for mechanical components of PWR nuclear islands Part 4: Production welds and heat treatment
Sector / Industry	Energy Industry Standard (Recommended)
Classification of Chinese Standard	F69
Classification of International Standard	27.120.20
Word Count Estimation	28,284
Date of Issue	2017-04-01
Date of Implementation	2017-10-01
Quoted Standard	GB/T 3375; GB/T 5185; GB/T 19866; NB/T 20005.32; NB/T 20006.31; NB/T 20450.1; NB/T 20450.2; NB/T 20450.3; NB/T 20450.5
Regulation (derived from)	National Energy Board Bulletin 2017 No. 7; Industry Standard Filing Announcement 2017 No. 9 (Total No. 213)
Issuing agency(ies)	National Energy Administration
Summary	This standard stipulates the storage and use of welding consumables in the manufacturing and installation process of nuclear island machinery and equipment of PWR nuclear power plant, the preparation and welding of groove preparation, welding method, surface cleanliness and protection, product welding requirements, accessory welding, Welding rework, welding related heat treatment (preheating, afterheating, stress relief heat treatment) and other requirements. This standard applies to the welding and welding related heat treatment of nuclear island machinery and equipment of pressurized water reactor nuclear power plants.