W/D S/S BY AWS D9.1/D9.1M

This code provides qualification, workmanship, and inspection requirements for both arc welding (Part A) and braze welding (Part B), as they apply to the fabrication, manufacture, and erection of nonstructural sheet metal components and systems.

This code was developed to provide standardized requirements for the qualification, production, and acceptance of welding or braze welding of nonstructural sheet metal components.

General applications of this code are in the following industrial areas:

(1) Heating, ventilating, and air conditioning systems

(2) Food processing equipment

(3) Architectural sheet metal and similar applications

(4) Other nonstructural sheet metal applications

This code covers sheet metal thicknesses up to and including 6.07 mm [0.239 in]. Also covered are the attachment of accessories and components of the system, and joining or attachment of any member, regardless of thickness, whose sole purpose is stiffening, supporting, or reinforcing the sheet metal.