... Introduction: E309LT1-1 welding wire is a kind of stainless steel gas-shielded flux-cored welding wire. Uses: E309LT1- ... 1 Used for stainless steel structures of the same types, composite steel, dissimilar steel, etc. in the production of ... equipment of synthetic fiber, petrochemical industry, etc., and also used for surfacing welding on nuclear reactors ...