... : male flange connection, loose flange connection, 90°graphite elbow coupling, graphite tee coupling, graphite stone, graphite outer tube fittings, graphite inner tube ... .Standard pipe size :Dg25,Dg36,Dg50,Dg65,Dg75,Dg102,Dg127,Dg152We can manufacture product according to the drawing you provide graphite pipe fitting