Flange standards compilation

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The flange is a part with a flange. Flanges can be separate, known as flange plates, or they can be combined, such as the flanges at both ends of a valve, to facilitate the installation of bolts. I. Steel pipe flanges: Standards for valve connection flanges in China’s machinery industry – JB/T 74: Technical requirements for pipeline flanges; JB/T 75: Types of pipeline flanges; JB/T 79.1: Raised-face integral cast steel pipe flanges; JB/T 79.2: Raised and recessed-face integral cast steel pipe flanges; JB/T 79.3: Grooved-face integral cast steel pipe flanges; JB/T 79.4: Ring-connected-face integral cast steel pipe flanges; JB/T 81: Raised-face plate-type butt-welded steel pipe flanges; JB/T 82.1: Raised-face welded steel pipe flanges; JB/T 82.2: Raised and recessed-face welded steel pipe flanges; JB/T 82.3: Grooved-face welded steel pipe flanges; JB/T 82.4: Ring-connected-face welded steel pipe flanges; JB/T 83: Butt-welded ring-plate type loose-fitting steel pipe flanges; JB/T 84: Raised and recessed-face welded ring-plate type loose-fitting steel pipe flanges; JB/T 85: Flanged plate type loose-fitting steel pipe flanges; JB/T 86.1: Raised-face steel pipe flange covers; JB/T 86.2: Raised and recessed-face steel pipe flange covers.

II. Steel pipe flanges: Standards for valve connection flanges in China – GB/T 9112 to GB/T 9124. For steel pipe flanges, as well as integral steel pipe flanges, the flange sealing surface types include flat surface, raised surface, raised and recessed surface, grooved surface, and ring-connected surface. GB/T 9112 Steel pipe flanges – Types and parameters
GB/T 9113.1 Integral steel pipe flanges with flat face and raised face
GB/T 9113.2 Integral steel pipe flanges with male-and-female faces
GB/T 9113.3 Integral steel pipe flanges with tongue-and-groove faces
GB/T 9113.4 Integral steel pipe flanges with ring joint face
GB/T 9114 Steel pipe flanges with raised face and threaded neck
GB/T 9115.1 Welding neck steel pipe flanges with flat face and raised face
GB/T 9115.2 Welding neck steel pipe flanges with male-and-female faces
GB/T 9115.3 Welding neck steel pipe flanges with tongue-and-groove faces
GB/T 9115.4 Welding neck steel pipe flanges with ring joint face
GB/T 9116.1 Slip-on steel pipe flanges with flat face and raised face
GB/T 9116.2 Slip-on steel pipe flanges with male-and-female faces
GB/T 9116.3 Slip-on steel pipe flanges with tongue-and-groove faces
GB/T 9116.4 Slip-on steel pipe flanges with ring joint face
GB/T 9117.1 Socket welding neck steel pipe flanges with raised face
GB/T 9117.2 Socket welding neck steel pipe flanges with male-and-female faces
GB/T 9117.3 Socket welding neck steel pipe flanges with tongue-and-groove faces
GB/T 9117.4 Socket welding neck steel pipe flanges with ring joint face
GB/T 9118.1 Welding neck loose flanges with raised face and ring
GB/T 9118.2 Welding neck loose flanges with ring joint face and ring
GB/T 9119 Plate type slip-on steel pipe flanges with flat face and raised face
GB/T 9120.1 Welding neck loose flanges with raised face and ring plate
GB/T 9120.2 Welding neck loose flanges with male-and-female faces and ring plate
GB/T 9120.3 Welding neck loose flanges with tongue-and-groove faces and ring plate
GB/T 9121.1 Slip-on loose flanges with raised face and ring plate
GB/T 9121.2 Slip-on loose flanges with male-and-female faces and ring plate
GB/T 9121.3 Slip-on loose flanges with tongue-and-groove faces and ring plate
GB/T 9122 Loose flanges with flanged ring plate
GB/T 9123.1 Flange covers for steel pipes with flat face and raised face
GB/T 9123.2 Flange covers for steel pipes with male-and-female faces
GB/T 9123.3 Flange covers for steel pipes with tongue-and-groove faces
GB/T 9123.4 Flange covers for steel pipes with ring joint face
GB/T 9124 Technical requirements for steel pipe flanges

III. Standards for valve connection flanges in China’s chemical industry
European system standards for steel pipe flanges
HG 20592 Types and parameters of steel pipe flanges
HG 20593 Plate type slip-on steel pipe flanges
HG 20594 Slip-on steel pipe flanges with neck
HG 20595 Welding neck steel pipe flanges
HG 20596 Integral steel pipe flanges
HG 20597 Socket welding steel pipe flanges
HG 20598 Threaded steel pipe flanges
HG 20599 Welding neck loose flanges with ring
HG 20600 Slip-on loose flanges with ring
HG 20601 Flange covers for steel pipes
HG 20602 Stainless steel lined flange covers
HG 20603 Technical requirements for steel pipe flanges
HG 20604 Pressure-temperature ratings for steel pipe flanges
HG 20605 Dimensions of welded joints and grooves for steel pipe flanges

American system standards for steel pipe flanges
HG 20615 Types and parameters of steel pipe flanges
HG 20616 Slip-on steel pipe flanges with neck
HG 20617 Welding neck steel pipe flanges
HG 20618 Integral steel pipe flanges
HG 20619 Socket welding steel pipe flanges
HG 20620 Threaded steel pipe flanges
HG 20621 Welding neck loose flanges with ring
HG 20622 Flange covers for steel pipes
HG 20623 Large-diameter steel pipe flanges
HG 20624 Technical requirements for steel pipe flanges
HG 20625 Pressure-temperature ratings for steel pipe flanges
HG 20626 Dimensions of welded joints and grooves for steel pipe flanges

Standards for copper alloy and clad flanges
GB/T 15530.1 Integrally cast copper alloy flanges
GB/T 15530.2 Copper alloy welding neck flanges
GB/T 15530.3 Copper alloy plate type slip-on flanges
GB/T 15530.4 Copper alloy slip-on flanges with neck
GB/T 15530.5 Copper alloy slip-on loose flanges with ring plate
GB/T 15530.6 Copper alloy welding neck loose flanges with ring plate
GB/T 15530.7 Copper alloy flange covers
GB/T 15530.8 Technical requirements for copper alloy and clad flanges

Fasteners for pipe flange connections
HG 20613 Fasteners for steel pipe flanges (European system)
HG 20634 Fasteners for steel pipe flanges (American system)
SH 3404 Fasteners for pipe flanges