... certification 1. Type:alloy steel pipes,carbon steel pipes,stainless steel pipes,welded steel pipes and so on2. Materials:carbon steel,alloy steel,stainless steel.3. Standard: ... P9A213 T11,T22,T5,T9 A182 F22 A182F9,A182F5 STAINLESS STEEL :oCr18Ni10Ti ,oCr18Ni9,302.s30200,s30300,303,304,s30400s, ... sight or 100%L/C at sightmain products :elbows ,flange ,tee ,bends ,caps ,cross 12CrMoV ALLOY STEEL pipe