| Provider of industrial pipes, tubes, valves, and fittings in all materials. Nuclear, fossil, and cogen plant piping is a specialty. |
| Information on tube and pipe related matters including large registers for producers, suppliers, and machine manufacturers. |
| Manufacturer of tube endforming machines for the automotive, aviation, air conditioning, heavy equipment, and furniture industries. |
| Wastewater treatment plant products. Ductile & steel pipe, process valves, slide & stop gates, couplings, hangers, expansion joints & specialty products. |
| Manufacturer of drainage and flood control needs including corrugated metal, spiral rib and steel ribbed polyethylene pipe. |
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