| Advanced Support Products, Inc. -- Custom design and manufacture support systems for the mounting of equipment, piping or any structure on roof systems or raw land sites. |
| Assured Flow Sales, Inc. -- Manufacture pressure-rated, ductile iron, cement-lined, tar-coated fitting designed to connect fire hydrants to gate valves and water mains. |
| General Flange -- Manufacturer of flanges in carbon steel, stainless and alloys as well as galvanized flanges and orifice unions. DIN/Metric/JIS flanges. |
| Lancashire Fittings -- Manufacturers and distributors of stainless steel pipe fittings, valves, flanges, repair clamps, instrumentation fittings, tube and pipe. |
| National Steel Products Co. Ltd. -- Manufacturer of malleable fittings, flanges and butt-weld fittings. |
| Reel Pipe and Valve -- Industrial pipe, valve and fitting wholesaler based in Indianapolis |
| Star Pipe Products -- Global manufacturer and supplier for a broad array of pipe fittings and pipe fitting accessories. |
| Texas Pipe Works Inc. -- Manufacture and distribute pipe couplings including merchant, water well , UL conduit and drive shoe couplings. |
