... ANSI,JIS,GB 3.material:Carbon steel carbon steel flange Our company supply various types of flanges. Size1/2 ... DN15-DN2000) Wall thicknesssch5-sch160,xs,xxs. Materialcarbon steel:ASTM A234 WPB,WPC,ASTMA420WPL9 WPL3,WPL6,WPHY42/46/52/ ... 304L,A304WP 316/316L,WP321,WP347,WPS31254 alloy steel:ASTM A234 WP, WP11,WP12,WP5,WP9,WP91TechniqueForged or ... seaport,China. The process flow diagram: carbon steel flange