Welding symbol interpretation Fabrication principles & practices Safety Requires a minimum passing grade of 75%, with a minimum score of 90% on safety-related questions A Performance Test: Reading welding symbols Following written procedures Cutting parts to proper specifications Fitting parts correctly ...
氧乙炔 切割和焊接 Oxyfuel Cutting and Welding OxyfuelCuttingandWelding •Oxyfuel:theprocessofcombiningpureoxygenwithacombustiblefuelgastoproduceaflame •Canbeusedforwelding,brazing,cutting,andheatingmetals •Oxygen&fuelgasesarestoredunderpressureincylindersandarereleasedasindividualgasesthroughvalves,regulators...