Includes armor plate cutting, forming or heat treating.

Code 3620 applies to employers engaged in manufacturing boilers, metal tanks, automobile gasoline, non-expanding on or below ground tanks, smokestacks, and gas holders.  Raw materials such as steel or stainless-steel plates, iron, I-beams and channel iron are purchased from suppliers.  The materials are cut to size with the use of power shears, rolled or power braked, heat treated, punched, drilled and assembled into final product by grinding, welding and painting.  Boilers, tanks and other equipment are inspected prior to being shipped to the employer’s customers.