A.Germany (DIN)
◆Pipe: Large OD series
◆Pipe flange: European flange
Pressure Rating: PN0.1, 0.25, 0.6, 1.0, 1.6, 2.5, 4.0, 6.4, 10.0, 16.0, 25.0, 32.0, 40.0 13 ratings
Nominal diameter: DN6～4000mm
Flange sealing surface: flat surface, convex surface, concave-convex surface, tongue and groove surface, rubber ring connection surface, lens surface and diaphragm welding surface 7 types
Flange Type: Flat Weld Plate Type, Flat Weld Loose Sleeve Type, Flanging Loose Sleeve Type, Butt Weld Flanging Loose Sleeve Type, Butt Weld Ring Loose Sleeve Type, Butt Weld Type, Threaded Connection Type, Integral Type, and Flange Cover 9 kinds.
Commonly used standards
DIN2410.T.1 Pipe and Tube Standards Overview
DIN2448 Seamless steel tubes Dimensions and quality per unit length
DIN2458 Welded steel pipes Dimensions and quality per unit length
DIN2500 Flanges General description
DIN2501.T.1 flanges Connection dimensions
DIN2519 Steel flanges Technical conditions of delivery
DIN2980 Steel pipe fittings with threads
B. Former Soviet Union (ΓOCT)
◆ Pipe: Small OD series OD dimensions same as our JB series
◆ Pipe flanges: European style flanges
Pressure rating: PN 0.1, 0.25, 0.6, 1.0, 1.6, 2.5, 4.0, 6.4, 10.0, 16.0, 20.0 11 ratings Nominal diameter: DN6~3000mm
Flange sealing surface: full plane, convex surface, concave-convex surface, PTFE tongue and groove surface, lens surface and elliptical ring connection surface 7 types
Flange type: flat weld plate type, flat weld loose sleeve type, flanging loose sleeve type, butt weld type, threaded connection type, integral type and flange 7 kinds.
German pipe flange standard DIN and the former Soviet Union pipe flange standard ΓOCT in the PN ≤ 16.0 grade can be used in pairs, but no longer interchangeable (because of the different series of receiver size). With the dissolution of the former Soviet Union, its application of the standard system ΓOCT has been rarely used in international engineering.
