GB steel pipe execution standard

2021-11-12

GB steel pipe has an important position in the steel pipe industry of our country.

GB steel pipe is made of steel ingot or solid tube billet through perforation, and then made by hot rolling, cold rolling or cold rolling.

GB steel pipe weight formula:

[(outer diameter - wall thickness) * wall thickness]*0.02466=kg/ meters (weight per meter)

GB steel pipe size and allowable deviation

Deviation grade	Allowable deviation of outer diameter
D1	±1.5%,Min±0.75 mm
D2	±1.0%,Min±0.50 mm
D3	±0.75%,Min±0.30 mm
D4	±0.50%,Min±0.10 mm

GB/T 12770-2002
Stainless steel welded pipe for mechanical structure.

GB/T 12771-2000
Welded stainless steel tubes for fluid transport.

GB/T 13793-1992
Straight seam welded steel pipe.

GB/T 14975-2002
Seamless stainless steel structure.

GB/T 14976-2002
Stainless steel seamless tubes for fluid transport.

GB/T 18984-2003
Seamless steel tubes for low temperature pipe.

GB/T 3639-2000
Cold drawn or cold-rolled precision seamless steel tube.

GB 3087-1999
Seamless steel tubes for low and medium pressure boiler.

GB/T 3091-2001
Welded steel pipe for low pressure liquid delivery.

GB 5310-1995
Seamless steel tube for high pressure boiler.

GB/T 5312-1999
Marine carbon and carbon manganese steel seamless steel pipe.

GB 6479-2000
Seamless steel tubes for high-pressure chemical fertilizer equipment.

GB/T 8162-1999
Seamless steel tubes for structure.

GB/T 8163-2008
Seamless pipe conveying fluid.

GB 9948-2006
Seamless steel tubes for petroleum cracking.

GB/T 14976-2002
Stainless steel seamless tubes for fluid transport.

GB/T 20409-2006
For high pressure boiler seamless pipe thread.

GB/T 14291-2006
Welded steel pipe for mine fluid transport.

GB 9948-2006
Seamless steel tubes for petroleum cracking.

CJ/T 3022-1993
Spiral seam submerged arc welded steel pipe for urban heating.

GB/T 9711.1-1997
Industrial oil gas transportation pipe technical delivery conditions - part first: steel pipes.

SY/T 5038-1992
Spiral seam high frequency welded steel pipe for ordinary fluid transmission pipeline.

DL/T 5017-2007
Specification for fabrication, installation and acceptance of penstocks for hydropower and water conservancy projects.

HG/T 20553-2011
Dimension selection series of seamless and welded steel pipe for chemical piping.

SY/T 5037-2000
Spiral seam submerged arc welded steel pipe for low pressure fluid transmission pipeline.

GB/T13296
Seamless steel tubes for boilers and heat exchangers.

GB/T28413
Welded steel tubes for boilers and heat exchangers.

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