CARBON STEEL BLIND FLANGE 1.size:1/2"~60" 2.standard:DIN,ANSI,JIS, ... steel,A105,Q235B,Q345B, CARBON STEEL BLIND FLANGE Size 1/2"~60" (DN15-DN2000) Wall thickness SCH5-SCH60,XS,SCH80-SCH160,XXS ... Tianjin seaport,China. The process flow diagram: CARBON STEEL BLIND FLANGE