... -on flanges, Blind flanges, Lap joint flanges, Welding neck flanges, Spectacle flanges,TG flanges,Socket welding flanges and Threaded flanges,Square flanges.Pressure ... 150#, 300#, 600#,900#,1500#, 2500#Wall thickness for welding neck flange: STD, SCH40, SCH80, SCH160. ... carbon steel SS400, stainless steel SUS304, SUS316Coating : rust-proof oil, cold and hot galvanizePacking: sea worthy plywooden case ...