Butterfly-shaped head current national standard
GB/T10752-1995 marine steel pipe butt welding head
GB/T12772-1999 Flexible interface cast iron pipe and fittings for drainage
GB/T 8803-2001 Injection molding of rigid polyvinyl chloride (PVC-U), chlorinated polyvinyl chloride (PVC-C), acrylonitrile-butadiene-styrene terpolymer (ABS) and acrylonitrile- Styrene-acrylate terpolymer (ASA) pipe fitting hot oven test method
GB/T 8802-2001 Determination of Vicat softening temperature of thermoplastic pipes and fittings
GB/T 18251-2000 Method for determination of pigment or carbon black dispersion in polyolefin pipes, tubes and compounds
GB/T 18474-2001 Test method for cross-linking degree of cross-linked polyethylene (PE-X) pipes and fittings
GB/T 18475-2001 Thermoplastic pressure pipes and fittings for the classification and naming of the overall use (design) coefficient
GB/T 18742.3-2002 Polypropylene piping systems for hot and cold water - Part 3: Pipe fittings
GB/T 18991-2003 Thermoplastic pipes and fittings for hot and cold water systems
GB/T 18993.3-2003 Chlorinated polyvinyl chloride (PVC-C) piping systems for hot and cold water - Part 3
GB/T 18998.3-2003 Industrial chlorinated polyvinyl chloride (PVC-C) piping systems - Part 3
GB/T 19228.3-2003 Rubber O-ring seal for stainless steel compression fittings
GB/T 19278-2003 General terms and definitions for thermoplastic pipes, fittings and valves
GB/T 19473.3-2004 Polybutene (PB) piping systems for hot and cold water - Part 3: Pipe fittings
GB/T 12459-2005 Steel butt welded seamless pipe fittings
GB/T 19712-2005 Plastic pipe and fittings polyethylene (PE) saddle bypass impact test method
GB 15558.2-2005 Gas-filled polyethylene (PE) piping systems - Part 2: Pipe fittings
GB/T 13663.2-2005 Polyethylene (PE) piping systems for water supply - Part 2: Pipe fittings
GB/T 19806-2005 Extrusion peeling test of polyethylene electrofusion components for plastic pipes and fittings
GB/T 19807-2005 Preparation of plastic pipe and fittings for polyethylene pipe and electrofusion pipe fittings
GB/T 19808-2005 Tensile peeling test of polyethylene electrofusion assemblies with nominal outer diameter greater than or equal to 90 mm for plastic pipes and fittings
GB/T 19809-2005 Preparation of hot-melt butt joints for plastic pipes and fittings polyethylene (PE) pipe/pipe or pipe/pipe fittings
GB/T 19810-2005 Determination of tensile strength and failure mode of hot-melt butt joints of polyethylene (PE) pipes and fittings
GB/T 13401-2005 steel plate butt welded pipe fittings
GB/T 19993-2005 Thermoplastic circulating pipe system pipe fittings system thermal cycle test method for hot and cold water
GB/T 5836.2-2006 Hard polyvinyl chloride (PVC-U) pipe fittings for building drainage
GB/T 15819-2006 Test methods and technical requirements for environmental stress cracking susceptibility of polyethylene (PE) pipes for irrigation from plug-in fittings
GB/T 20201-2006 polyethylene (PE) pressure pipe mechanical connection pipe fittings for irrigation
GB/T 20207.2-2006 Acrylonitrile-butadiene-styrene (ABS) pressure piping systems - Part 2
GB/T 20674.2-2006 Plastics pipes and fittings - Polyethylene system welding equipment - Part 2
GB/T 20674.1-2006 Plastics pipes and fittings - Polyethylene system welding equipment - Part 1
GB/T 8801-2007 Hard polyvinyl chloride (PVC-U) pipe fittings falling test method
GB/T 21300-2007 Determination of opacity of plastic pipes and fittings
GB/T 21409-2008 General rules for the inspection, installation and use of glass equipment, pipes and fittings
GB/T 21408-2008 versatility and interchangeability of 15mm~150mm caliber pipes and fittings for glass equipment, pipes and fittings
GB/T 14383-2008 Forged socket welding and threaded fittings
GB/T 13295-2008 Ductile iron pipes, fittings and accessories for water and gas pipelines
GB/T 6567.3-2008 Graphical sign fittings for technical drawing piping systems
GB/T 22051-2008 XLPE (PE-X) pipe with sliding sleeve cold expansion pipe fittings
GB/T 6567.5-2008 Axial mapping method for graphical symbols such as graphical symbols for pipelines, fittings and valves
GB/T 11618.1-2008 Copper fittings - Part 1: Brazed fittings
GB/T 12772-2008 Flexible interface cast iron pipe, fittings and accessories for drainage
GB/T 3420-2008 gray cast iron pipe fittings
GB/T 11618.2-2008 Copper fittings - Part 2: Compressed fittings
GB/T 23241-2009 Basic parameters and technical conditions for plastic pipes and fittings for irrigation
GB/T 23682-2009 Refrigeration systems and heat pump hoses, isolation tubes and expansion joints requirements, design and installation
GB/T 24452-2009 Chlorinated polyvinyl chloride (PVC-C) pipes and fittings for sewage and wastewater (high and low temperature) in buildings
GB/T 17457-2009 Ductile iron pipe and fittings cement mortar lining
GB/T 24596-2009 Ductile iron pipe and pipe fitting polyurethane coating
GB/T 24672-2009 Metal thin-walled pipe and fittings for sprinkler irrigation
GB/T 5135.19-2010 Automatic sprinkler systems - Part 19: Plastic pipes and fittings
GB/T 26002-2010 stainless steel corrugated hose and fittings for gas transmission
GB/T 26120-2010 low pressure stainless steel threaded pipe fittings
GB/T 26081-2010 Ductile iron pipes, fittings and accessories for sewage
GB 26255.2-2010 Mechanical pipe fittings for polyethylene pipeline systems - Part 2: Steel-plastic conversion fittings for pipes with a nominal outer diameter greater than 63 mm
GB 26255.1-2010 Mechanical pipe fittings for polyethylene pipeline systems - Part 1 : Steel-plastic conversion fittings for pipes with a nominal outside diameter not exceeding 63 mm
GB/T 26500-2011 General technical requirements for fluoroplastic lining steel pipes and fittings
GB/T 19228.2-2011 Stainless steel compression fittings - Part 2: Thin-walled stainless steel tubes for connection
GB/T 19228.1-2011 stainless steel ferrule fittings - Part 1: Compressed fittings
GB/T 27684-2011 Titanium and titanium alloy seamless and welded pipe fittings
GB/T 27891-2011 Carbon steel compression type pipe fitting butterfly head industry standard
1) "Steel butt welding seamless pipe fittings" GB/T 12459-2005
2) "Steel Welded Pipe Fittings" GB/T 13401-2005
3) "Power station steel butt welded pipe fittings" DL/T 695-1999
SH 3408 steel butt welded seamless pipe fitting SH 3409 steel plate butt welded pipe fittings
SH 3410 Forged steel socket welded pipe fittings
HGJ514-87 carbon steel, low alloy steel seamless butt welded pipe fittings This information comes from the tapered head, no straight edge head, spherical head and other stainless steel head: http://
Flat-bottomed head, butterfly head, spherical head and other stainless steel heads: http://
Stainless steel head: http://
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