Listed here are offshore pipeline contractors, oil and gas piping components suppliers, and providers of offshore oil and gas services for the design, supply, installation and maintenance of offshore piping systems.

These companies specialise in offshore pipeline construction and piping works, offering oilfield piping systems and equipment ranging from flanges, valves, bolts, stud bolts, gaskets, clamp connectors, nuts, socket cap screws, weld cladding, oil and gas heat exchangers, and hydraulic hoses and fittings to pipe rollers, drive wheels, and many other solutions.

Further, the list contains companies that provide pipeline engineering and welding services, pipe spool fabrication, non-welded piping solutions, flexible metallic hoses, as well as tubing solutions, composite pipe support technology, and rig preparation and pipeline laying services.