... ''-240''(DN15 to DN6000)TypeWelding Neck Flange, Slip on Flange, Threaded Flange, Socket Welding Flange, Blind Flange, OrificeFlange, Ring Joint Flanges, Long ... paper making,metallurgy,construction /water supply and sewage work Flange Facing TypesRaised Face, Flat Face, Ring Type Joint, ... or samples2.Software for specification drawings: Pro/E, Auto CAD, solid work 2001,CAXA,UG,CAD,CAM3.Certificates ...