Historical
AWS f4.1-1999-all
AWS F4.1 RECOMMENDED SAFE PRACTICES FOR THE PREPARATION FOR WELDING AND CUTTING OF CONTAINERS AND PIPING
This standard informs the reader of necessary safe practices for cleaning and preparing to weld and cut containers and piping. It describes various cleaning methods including water. steam. hot chemical. and mechanical and proper preparation techniques. such as inerting.
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American Welding Society [aws]