... standard:DIN,ANSI,JIS,GB 3.material:Carbon steel,A105,Q235B,Q345B, CARBON STEEL BLIND FLANGE Size 1/2"~60" (DN15 ... thickness SCH5-SCH60,XS,SCH80-SCH160,XXS- Material Carbon steel,Stainless steel,alloy steel Rating ANSI 150LBS - 2500LBS, DIN PN6 - PN160, ... conservancy, electric power, sanitary construction etc. Surface treatment Resist-rust,Transparent oil, yellow or black paint or vanish painting or ...