EN1092-1 is the most common use standard specification for manufacturing cast and forged steel pipe flange in Europe.
EN1092-1 standard covers Steel Pipe Flanges and Flanged Fittings from DN10 through DN4000 in pressure PN2.5 to PN400.Moreover, it defines the different kinds of flanges and their sealing surfaces, tolerances, threading and labelling.
Flange Type：
Type01 Plate flange for welding, Type02 Loose plate flange with weld-on plate collar or for lapped pipe end, Type04 Loose plate flange with weld-neck collar, Type05 Blind flange, Type11 Weld-neck flange, Type12 Hubbed slip-on flange for welding, Type13 Hubbed threaded flange, Type21a Integral flange, Type32b Weld-on collar plate, Type33a, b Lapped pipe end, Type34b Weld-neck collar, Type35b Weldring neck, Type36b Pressed collar with long neck, Type37b Pressed collar.
Material:
EN10222-2 P235GH, EN10222-2 P245GH, EN10222-2 P250GH, EN10222-2 280GH, EN10222-2 16Mo3, EN10222-2 13CrMo4-5, EN10222-2 11CrMo9-10, EN10222-2 X16CrMo5-1+NT, EN10222-3 15NiMn6, EN10222-3 13MnNi6-3, EN10222-3 12Ni4, EN10222-3 X12Ni5, EN10222-3 X8Ni9, EN10222-4 P285NH, EN10222-4 P285QH, EN10222-4 P355NH, EN10222-4 P355QH1, EN10222-2 X20CrMoV11-1, EN10222-2 X10CrMoVNb9-1, EN10222-5 X2CrNi18-9, EN10222-5 X2CrNiN18-10, EN10222-5 X5CrNi18-10, EN10222-5 X6CrNi18-10, EN10222-5 X6CrNiTi18-10, EN10222-5 X6CrNiNb18-10, EN10222-5 X6CrNiTiB18-10, EN10222-5 X2CrNiMo17-12-2, EN10222-5 X2CrNiMo17-12-3, EN10222-5 X2CrNiMo18-14-3, EN10222-5 X2CrNiMoN17-11-2, EN10222-5 X2CrNiMoN17-13-3, EN10222-5 X5CrNiMo17-12-2, EN10222-5 X3CrNiMo17-13-3, EN10222-5 X6CrNiMoTi17-12-2, EN10222-5 X2CrNiMoN22-5-3, EN10222-5 X2CrNiMoN25-7-4.
Surface Treatment：
Epoxy Coated, Coated With Anti-Rust Oil Coating, Transparent paint, Electrogalvanizing, Hot dip galvanizing, Powder coating, Electropolishing, Dacromet.
End Flange Facings：
Type A : Flat face, Type B : Raised face, Type C : Tongue, Type D : Groove, Type E : Spigot, Type F : Recess, Type G : o-ring spigot, Type H : o-ring groove.
Connection Type：
Welding, Threaded, Lap joint.
Production Process：
Free forging flange, Die forging flange, Plate cutting flange, Ring rolling forging flange, Casting flange.