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VALVE FLANGE CONNECTION STANDARD
2024.08.06
The flange is a part with a flange. The flange can be individual, called a flange, or it can be a combined type, such as the flanges at both ends of the valve, for easy installation of bolts.
1. Steel pipe flange is the standard for valve connection flanges in China's machinery industry
JB/T 74-1994 Pipe Flange Technical Specifications
JB/T 75-1994 Pipe Flange Type
JB/T 79.1-1994 Convex integral cast steel pipe flange
JB/T 79.2-1994 Concave and convex surface integral cast steel pipe flange
JB/T 79.3-1994 Integral cast steel pipe flange with tongue and groove surface
JB/T79.4-1994 Ring Connecting Surface Integral Cast Steel Pipe Flange
JB/T 81-1994 Convex Panel Type Flat Welded Steel Pipe Flange
JB/T 82.1-1994 Convex face welded steel pipe flange
JB/T 82.2-1994 Concave-convex face welded steel pipe flange
JB/T 82.3-1994 Tongue and groove face welded steel pipe flange
JB/T 82.4-1994 Ring Connection Face Welded Steel Pipe Flange
JB/T 83-1994 Flat Welded Ring Plate Type Loose Sleeve Steel Pipe Flange
JB/T 84-1994 Concave-convex face welded ring plate type loose sleeve steel pipe flange
JB/T 85-1994 Flanged plate type loose sleeve steel pipe flange
JB/T 86.1-1994 Convex steel pipe flange cover
JB/T 86.2-1994 Concave and convex steel pipe flange cover
2. Steel pipe flange China's national valve connection flange standard
GB/T 9112 ~ GB/T 9124-2000 Steel pipe flanges, the flange sealing surface forms of integral steel pipe flanges include plane, protruding surface, concave and convex surface, tenon and groove surface and ring connecting surface.
GBT 9112-2000 Steel Pipe Flange Type and Parameters
GBT 9113.1-2000 Flat and Raised Integral Steel Pipe Flange
GBT 9113.2-2000 Integral steel pipe flange with concave and convex surface
GBT 9113.3-2000 Integral steel pipe flange with tongue and groove surface
GBT 9113.4-2000 Ring Connecting Surface Integral Steel Pipe Flange
GBT 9114-2000 Raised Neck Rebar Pipe Flange
GBT 9115.1-2000 Flat and Raised Faces Welded Steel Pipe Flanges
GBT 9115.2-2000 Concave-convex face welded steel pipe flange
GB/T 9115.3-2000 Tongue and groove face welded steel pipe flange
GB/T 9115.4-2000 Ring connection face welded steel pipe flange
GB/T 9116.1-2000 Flat welded steel pipe flanges with neck on flat and raised surfaces
GB/T 9116.2-2000 Concave-convex surface flat welded steel pipe flange with neck
GB/T 9116.3-2000 Flat welded steel pipe flange with neck on tongue and groove surface
GB/T 9116.4-2000 Ring connection surface with neck flat welded steel pipe flange
GB/T 9117.1-2000 Raised steel pipe flange with neck socket welding
GB/T 9117.2-2000 Concave-convex surface socket welded steel pipe flange with neck
GB/T 9117.3-2000 Socket welded steel pipe flange with neck on tongue and groove surface
GB/T 9117.4-2000 Socket welded steel pipe flange with neck on ring connection surface
B/T 9118.1-2000 Welded rings with neck loose sleeve steel pipe flange on the protrusion
GB/T 9118.2-2000 Ring connection face welded ring with neck loose sleeve steel pipe flange
GB/T 9119-2000 Flat, protruding panel type flat-welded steel pipe flange
GB/T 9120.1-2000 Flat steel pipe flange for welded ring plate plate
GB/T 9120.2-2000 Concave-convex face welded ring plate type loose sleeve steel pipe flange
GB/T 9120.3-2000 Tongue and groove face welded ring plate type loose sleeve steel pipe flange
GB/T 9121.1-2000 Flat welded ring plate type loose sleeve steel pipe flange on the raised surface
GB/T 9121.2-2000 Concave and convex flat welded ring plate type loose sleeve steel pipe flange
GB/T 9121.3-2000 Flat welded ring plate type loose sleeve steel pipe flange with tongue and groove surface
GB/T 9122-2000 Flanging ring plate type loose sleeve steel pipe flange
GB/T 9123.1-2000 Flat and raised steel pipe flange covers
GB/T 9123.2-2000 Steel pipe flange cover with concave and convex surface
GB/T 9123.3-2000 Tongue and groove surface steel pipe flange cover
GB/T 9123.4-2000 Ring connection surface steel pipe flange cover
GB/T 9124-2000 Steel pipe flange Technical conditions
3. Steel pipe flange is the standard for valve connection flanges in China's chemical industry
European system steel pipe flange
HG 20592-1997 Steel pipe flange type, parameters
HG 20593-1997 Plate type flat welded steel pipe flange
HG 20594-1997 Flat Welded Steel Pipe Flange With Neck
HG 20595-1997 Butt welded steel pipe flange with neck
HG 20596-1997 Integral Steel Pipe Flange
HG 20597-1997 socket welded steel pipe flange
HG 20598-1997 Rebar Pipe Flange
HG 20599-1997 Butt Welded Ring Loose Sleeve Steel Pipe Flange
HG 20600-1997 Flat Welded Ring Loose Sleeve Steel Pipe Flange
HG 20601-1997 Steel Pipe Flange Cap
HG 20602-1997 Stainless Steel Lined Flange Cap
HG 20603-1997 Technical Specifications for Steel Pipe Flanges
HG 20604-1997 Pressure-Temperature Rating for Steel Pipe Flanges
HG 20605-1997 Steel Pipe Flange Welded Joint and Bevel Dimensions
Americas System Standard for Steel Pipe Flanges
HG 20615-1997 Steel pipe flange type, parameters
HG 20616-1997 Flat Welded Steel Pipe Flange with Neck
HG 20617-1997 Butt Welded Steel Pipe Flange with Neck
HG 20618-1997 Integral Steel Pipe Flange
HG 20619-1997 socket welded steel pipe flange
HG 20620-1997 Rebar pipe flange
HG 20621-1997 Butt Welded Ring Loose Sleeve Steel Pipe Flange
HG 20622-1997 Steel Pipe Flange Cover
HG 20623-1997 Large Diameter Steel Pipe Flange
HG 20624-1997 Technical Specification for Steel Pipe Flanges
HG 20625-1997 Steel Pipe Flange Pressure-Temperature Rating
HG 20626-1997 Steel Pipe Flange Welded Joint and Bevel Size
Copper alloy and composite flange standards
GB/T 15530.1-1995 Copper alloy integral cast flange
GB/T 15530.2-1995 Copper alloy butt welding flange
GB/T 15530.3-1995 Copper alloy plate flat welded flange
GB/T 15530.4-1995 Copper alloy flat welded flange with neck
GB/T 15530.5-1995 Copper alloy flat welded ring loose sleeve plate steel flange
GB/T 15530.6-1995 Copper alloy butt welded ring loose sleeve plate steel flange
GB/T 15530.7-1995 Copper alloy flange cover
GB/T 15530.8-1995 Copper alloy and composite flange Technical conditions
Fasteners for pipe flange connections
HG 20613-1997 Fasteners for Steel Pipe Flanges (European System)
HG 20634-1997 Fasteners for Steel Pipe Flanges (American System)
SH 3404-1996 Fasteners for pipe flanges
Fourth, steel pipe flange China petrochemical industry valve connection flange standard
The nominal diameter size range of each nominal pressure class
Flange connection and sealing surface form DN≤600mm flange connection
Flange structure and size of DN≥600mm
Loose flange
Nominal pressure ≥PN5.0MPa The form and size of the concave and convex surface, tongue and groove surface flange sealing surface
Flange and carbon steel, low alloy steel and stainless steel pipe connection size
Flange structure with nominal diameter DN>60mm
Flange screw hole and scribing hole structure form and size
Structural size of flange and pipe welding part: nominal diameter DN≤600mm butt welding flange neck and welding end groove size; DN>600mm butt welding flange weld end groove size; Structure and size of socket welded and flat welded flanges and pipe welds
Flange pressure - temperature rating: the maximum non-impact pressure allowed to be used by the flange at different operating temperatures is determined according to "Table 1-308", and the intermediate value can be determined by the insertion method
Flange size limit deviation
The structure and size of the metal ring pad
Spiral wound gaskets
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