Sweco Fab manufactures pressure vessels, tanks, bellmouth reducers, instrument supports, strainers, pig launchers and receivers, duct and transition pieces, spectacle and drip rings and orifice plates and flanges. It is an ASME code fabricator and machine shop. The company is a subsidiary of Piping Technology and Products. PT&P and its subsidiaries, manufacture a variety of engineered pipe supports. Since 1978, it has provided various industries with pipe hangers, expansion joints, pre-insulated supports and pipe support products.