... blind flange Certificate:ISO,EC,RINA,GL,CCS,LR,SBG,ABS,DNV,BV,NK etc Material:stainless steel ... Size:1/2-80" Moq:10pc Stainless steel and Figure 8 blind flange Type FlangeSize1/2 ... WP11,WP22,WP5, WP9,WP914)Duplex & Super Duplex Stainless Steel :ASTM A815 UNS S31803,UNS S32750, UNS ... made under the ISO9001:2000 strictly. Stainless steel and Figure 8 blind flange