We are offering flanges.shanxi kewell industrial co., ltd produce different standard of flange. Such as : flat face flanges, slip on flange , welding neck flange , blind flange, threaded flange with ansi, din, en1092-1, nfe, as, jis standard . If you have the requirement for them, please contact us : sx.kewell at yahoo.cn . detailed description 1, standards :. Ansi, din, en1092-1, nfe, as, jis 2. Pression grade : pn10/pn16/pn25/pn40 3, material : a) carbon steel b) stainless steel c) alloy steel d) cast iron 4, size : dn10 to dn3000 5, type: wn, so, bl, ff, plate, thread, socket and etc; 6, process : casting , free forging , plate cutting. 7, coating : black bitumen coatinng anti-rust oil . galvanized /hot-dip galvanized blue , black or red color . 8 , package : wooden cases with plastic layer wooden pallets with plastic layer as per customers requirements 9. Certificate : iso9001 bv product conformity sgs certificate 10 , inspection foundry in-house third party inspection available upon request.