Gulf Coast Marine Supply supplies pipes, valves, fittings, instrumentation, industrial mill supplies, and actuation products. It offers instrumentation, such as pressure, test, diaphragm, sanitary, vacuum, and liquid-filled gauges; pressure and temperature switches; and thermometers, thermowells, diaphragm seals, and dead weight testers. The Company also provides pipes, including carbon steel, carbon steel welded, brass, stainless steel, aluminum, and PVC and CPVC pipes.