The American Welding Society (AWS) has just issued 13 revised Standard Welding Procedure Specifications (SWPS) for welding of 10 through 18 gauge galvanised steel, carbon steel and austenitic stainless steel sheet metal, in the as-welded condition, with or without backing. The SWPSs outline the essential variables for welding steel in the thickness range of 18 through 10 gauge, using semi-automatic gas metal arc welding (short circuiting transfer mode), shielded metal arc welding, or manual gas tungsten welding. Readers will also learn the operating conditions necessary to fabricate the weldment. The SWPS address base metal, filler metal specifications, joint designs for groove welds and fillet welds and other requirements to implement the SWPS. These revised SWPSs supersede the previously published standards with the same designations. A copy of the specifications is obtainable from AWS, tel. +1800 854-7179.