... 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:ISO9001, ... transfer,oil transfer,high pressure pipeline and so on9. Atractive price and delivery timecarbon steel :1010,1012,1025-1060,15#,20 ... sightmain products :elbows ,flange ,tee ,bends ,caps ,cross 12CrMoV ALLOY STEEL pipe