... for your reference. Size1/2''-240''(DN15 to DN6000)TypeWelding Neck Flange, Slip on Flange, Threaded Flange, Socket Welding Flange, ... -2000JIS B2220-2004 Pressure ReatingAmerican Series: CLASS 150, CLASS 300, CLASS 400, CLASS 600, CLASS 900, CLASS 1500, CLASS 2500 European Series: PN 2.5, ... drawings or samples2.Software for specification drawings: Pro/E, Auto CAD, solid work 2001,CAXA,UG,CAD,CAM3 ...