The company has quality inspection center, adopts the GB/T19001/2000 standard, has passed the inspection and acceptance of the pressure pipe fittings organized by the State Administration of quality supervision, inspection and quarantine, and has issued the special equipment manufacturing license. Our company has approved the production enterprise by the State Quality Supervision Bureau. It is a good faith enterprise integrating scientific research, production and sales. This standard specifies the type and size of the steel pipe flange with the nominal pressure PN of 0.6, 1, 1.6, 2.5, 4.0MPa and nominal pressure PN 2, 5, 11 and 15.0MPa. This standard is applicable to the nominal pressure PN0.6 - PN15.0MPa flanges with the neck and neck.
GB/T9113.2-2000 concave convex integral steel pipe flanges
GB/T9113.3-2000 groove integral steel pipe flanges
GB/T9113.4-2000 ring joint face integral steel pipe flanges
GB/T9114-2000 hubbed screwed steel pipe flanges
GB/T9115.1-2000 plane, welding steel pipe flanges with raised face
Welding steel pipe flanges with raised face GB/T9115.2-2000
Welding steel pipe flanges with tongue and groove face GB/T9115.3-2000
GB/T9115.4-1000 ring joint face welding steel pipe flanges
GB/T9116.1-2000 plane, with a sudden neck welding steel pipe flanges
GB/T9116.2-2000 convex surface hubbed steel pipe flanges
GB/T9116.3-2000 tongue and groove face neck welding steel pipe flanges
GB/T9116.4-2000 ring is connected with a neck plate steel pipe flanges
GB/T9117.1-2000 hubbed socket steel pipe flanges
GB/T9117.2-2000 concave convex surface hubbed socket welding steel pipe flanges
GB/T9117.3-2000 mortise hubbed socket welding steel pipe flanges
GB/T9117.4-2000 ring connection hubbed socket welding steel pipe flanges
GB/T9118.1-2000 process with welding neck ring loose steel pipe flanges
GB/T9118.2-2000 ring joint face welding neck ring loose steel pipe flanges
GB/T9119-2000 plane, suddenly face plate welding welding steel pipe flanges
GB/T9120.1-2000 plane welding ring loose plate steel pipe flanges
GB/T9120.2-2000 bump ring welding face loose plate steel pipe flanges
GB/T9120.3-2000 groove welding ring face loose plate steel pipe flanges
GB/T9121.1-2000 flat ring raised face loose plate steel pipe flanges
GB/T9121.2-2000 convex surface flat ring loose plate steel pipe flanges
GB/T9121.3-2000 groove welding ring loose plate steel pipe flanges
GB/T9122-2000 flange ring loose plate steel pipe flanges
GB/T9123.1-2000 plane, raised face steel pipe flange cover
GB/T9123.2-2000 convex surface steel pipe flange
GB/T9123.3-2000 groove steel pipe flanges
GB/T9123.4-2000 ring connected to the surface of steel pipe flanges
GB/T9124-2000 technical conditions of steel pipe flanges
JB/T74-1994 pipe flange technical conditions
JB/T75-1994 pipe flange technical conditions
JB/T79.1-1994 convex whole cast steel flange
JB/T79.2-1994 concave convex integral cast steel flange
JB/T79.3-1994 groove whole cast steel flange
JB/T79.4-1994 whole cast steel pipe flanges with ring joint face
Welding steel pipe flanges JB/T81-1994 convex face
Welding steel pipe flanges JB/T82.1-1994 convex face
Welding steel pipe flanges with raised face JB/T82.2-1994
Welding steel pipe flanges with tongue and groove face JB/T82.3-1994
JB/T82.4-1994 ring joint face welding steel pipe flanges
JB/T83-1994 flat ring loose plate steel pipe flanges
JB/T84-1994 bump face welding ring type loose loose steel pipe flanges
JB/T85-1994 flange loose plate steel pipe flanges
JB/T86.1-1994 convex steel pipe flanges
JB/T86.2-1994 convex surface steel pipe flange
HG20592-1997 steel pipe flange type, parameter (European system)
HG20593-1997 flat plate steel pipe flanges (European system)
HG20594-1997 hubbed steel pipe flanges (European system)
HG20595-1997 steel pipe welding neck flange (European system)
HG20596-1997 integral steel pipe flanges (European system)
HG20597-1997 socket welding steel pipe flanges (European system)
HG20598-1997 thread steel pipe flanges (European system)
HG20599-1997 butt welding ring loose steel pipe flanges (European system)
HG20600-1997 flat ring loose steel pipe flanges (European system)
HG20601-1997 steel pipe flanges (European system)
HG20602-1997 stainless steel lining flange (European bodyDepartment)
HG20603-1997 steel pipe flanges technical conditions (European system)
HG20604-1997 steel pipe flange pressure - temperature rating (European system)
Joint size of groove and welding flange steel tube HG20605-1997 (European system)
HG20615-1997 steel pipe flange type, parameter (American system)
HG20616-1997 hubbed steel pipe flanges (American system)
HG20617-1997 steel pipe welding neck flange (American system)
HG20618-1997 integral steel pipe flanges (American system)
HG20619-1997 undertake welding steel pipe flanges (American system)
HG20620-1997 thread steel pipe flanges (American system)
HG20621-1997 butt welding ring loose steel pipe flanges (American system)
HG20622-1997 steel pipe flanges (American system)
HG20623-1997 large diameter steel pipe flanges (American system)
HG20624-1997 steel pipe flanges technical conditions (American system)
HG20625-1997 steel pipe flange pressure - temperature rating (American system)
Joint size of groove and welding flange steel tube HG20626-1997 (American system)
SH3406-1996 petroleum steel pipe flanges above is my factory his own point of view on the steel flange, if there are different opinions welcome discussion