·Design and Manufacture:AWWAC509/Bs5163/Din3352·Face to Face:ASME B 16.10 Bs5163 Din 3202 F4·Insepction and Test:Api 598·Flanges:Ansi B 16.5 Bs 4504 En 1092·Size:Dn50-DN1000·Pressure:PN10/16·Temperature:0-80℃·Material:GG25 GGG40