TG-X Series Flux-cored filler wire for welding stainless steel pipes without requiring cleaning of the back side of the weld root, available TG-X308L AWS A5.22-95 R308LT1-5; TG-X309L AWS A5.22-95 R309 LT1-5; TG X316L AWS A5.22-95 R316LT1-5; TG-X337 AWS A5.22-95 R347T1-5; 2.2m/m.