Fangrui Product Details The Flame Torch Is Very Convenient To Use, And Can Be Used For Metal Welding/pipe Thawing/outdoor Barbecue/cake Baking/air Conditioner Refrigerator Copper Pipe Processing / (singeing)/household Maintenance And So On. Welding Instructions:with Universal Copper-aluminum Flux-cored Welding Wire (not Tin Welding Wire), It Can Be Used For Welding And Repairing Copper, Aluminum, Iron, Stainless Steel And Other Household Metal Products, But It Is Not Suitable For Welding Cast Iron, Cast Copper And Other Hard And Thick Castings. Step 1: Before Welding, The Welding Joint Must Be Clean And Free Of Dirt And Oil. : Welding Base Metal (welding Parts) Must Be Heated To 350-400 And Then Place The Welding Wire At The Welding Port For Welding (do Not Burn The Base Metal Red Or Do Not Heat It). Note: If The Welding Wire Does Not Stick After Melting, It Is Because The Base Metal Is Not Heated Enough. The Temperature Of The Double-headed Welding Torch Can Reach 2000 Tips: The Product May Be Updated Constantly, The Ac Note: Due to the light and screen setting difference, the item's color may be slightly different from the pictures. Please allow slight dimension difference due to different manual measurement.