1) JIS B2210 1k/5K/10K/16K/20K/30K/ SOP and SOH,BL 2) Size:1/2"-24" 3) Material:SS400,SF440A We are a professional manufacturer of and exporter of kinds of forged pipe flange1) Standard: ANSI,DIN,,JIS,UNI,BS,ks2) Material:Carbon Steel:A105,S235JRG2(Rst37.2),SS400,SF440A3) Size:1/2"-24"4)Type:Plate,Slip-On,,Threaded,,Blind5)Surface treatment:Anti-rust Oil,Transparent/Yellow/Black Anti-rust Paint, ...