Gulf Coast Marine Supply been in business since 1939 and is a leading supplier of quality pipe, valves, fittings, instrumentation, industrial mill supplies, actuation, hose and gasketing.. Pipe* Valves* Fittings* Industrial Supplies* Valve Actuation* Hose and Gasketing* Value Actuation* Gasket Cutting* Gauge Calibration* Hose Assemblies*