GB/T 5648-1985 Flared B-type pipe fitting nuts
Basic Information
Standard ID:
GB/T 5648-1985
Standard Name: Flared B-type pipe fitting nuts
Chinese Name:
扩口式B型管接头螺母
Standard category:National Standard (GB)
state:Abolished
Date of Release1985-01-01
Date of Implementation:1986-09-01
Date of Expiration:2008-11-01
standard classification number
Standard ICS number:Fluid systems and general parts>>Pipeline components and pipelines>>23.040.60 Flanges, pipe joints and connecting parts
Standard Classification Number:Machinery>>General Parts>>J15 Pipe Accessories
Publication information
other information
Release date:1985-11-25
Review date:2004-10-14
Drafting unit:Standardization Institute of the Ministry of Machinery Industry
Focal point unit:National Technical Committee for Standardization of Pipe Accessories
Publishing department:China Machinery Industry Federation
competent authority:China Machinery Industry Federation
Introduction to standards:
GB/T 5648-1985 Flared B-type pipe fitting nut GB/T5648-1985 Standard download decompression password: www.bzxz.net
Some standard content:
National Standard of the People's Republic of China
Flared type B pipe fitting nuts
F lared type tube fittings.
Style B'nuf.
This standard applies to flared type B pipe fitting nuts for pipeline systems with oil and gas as the medium. Other
Marking example:
Flared type B pipe fitting nuts with pipe outer diameter D. of 10 mm: Nut B10GB 564B-85
M10×1
M14 × 1.5
M18 × 1.5
Basic size
Limit deviation
National Bureau of Standards, 1985-11-25
UDC 621.643.4
+621.882.3
GB 5648B5
Most quality (steel)
kg/100 pieceswww.bzxz.net
1986-09-01 implementation
GB 5648-85
Technical conditions shall be in accordance with the provisions of GB553-85 "Technical conditions for flared pipe joints". Additional notes:
This standard is proposed by the Ministry of Machinery Industry of the People's Republic of China and is under the jurisdiction of the Standardization Institute of the Ministry of Machinery Industry. This standard was drafted by the Standardization Institute of the Ministry of Machinery Industry, Shanghai Hydraulic Accessories Factory, Changchun Automobile Research Institute, and Shanghai Hydraulic and Pneumatic Research Institute.
The main drafters of this standard are Hu Lusheng, Li Ningning, and Zhang Qianlong. From the date of implementation of this standard, the original ministry standard JB1920-77 "Flared B-type pipe joint nuts" will be invalid
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