An American National Standard. Approved by American National Standards Institute April 15, 1993. Prepared by American Welding Society (AWS). 18p. This Standard WPS is not valid using conditions and variables outside the ranges listed. The American Welding Society considers that this Standard WPS presents information for producing acceptable weld using the conditions and variables listed. The used needs a significant knowledge of welding and accepts full responsibility for the performance of the weld and for providing the engineering capability, qualified personnel, and proper equipment to implement this Standard Welding Procedure Specification.