... certification. Product introduction : Item Namestainless steel tube,require Tube,Stainless Steel Pipes,fitting Material1.Stainless steel:303/304/316/412/etc2.Aluminum ... /etc3.Brass alloy:3602/2604/H59/H62/etc4.Steel alloy : carbon steel/ dei steel/etc5.Other special materials :copper /bronze/iron ... quality and service will win the market stainless steel tube,require Tube,Stainless Steel Pipes,fitting