... .size:1/2"~60" 2.standard:DIN,ANSI,JIS,GB 3.material:Carbon steel carbon steel flange Our company supply various types ... :A403WP304/304L,A304WP 316/316L,WP321,WP347,WPS31254 alloy steel:ASTM A234 WP, WP11,WP12,WP5,WP9,WP91TechniqueForged or Casting StandardASTM ... ,2632,2633,2543,2634,JIS 5K,10K,16K,20K, ANSI B16.5, GB/T9112-2000 Application rangesuch as oil industry,chemical industry ...