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Pipes, tubes and hoses, and fittings therefor, all of metal, and valves of metal other than parts of machines

Machines and machine tools for manufacturing of pipes

Flexible pipes, tubes, hoses and fittings therefor, and fittings for rigid pipes, all non-metallic; non-metal connectors for hoses; non-metallic couplings for pipes; non-metallic coupling sleeves for tubes; non-metallic couplings for tubes; non-metal joint connectors for pipes

Rigid non-metallic pipes and water pipe valves therefor, not of metal or plastic

Plastic storage containers for commercial or industrial use, and closures for containers and holders for containers, non-metallic

Underwater pipeline inspection services; design of pipelines; locating and marking placement of underground utility pipes, cable or wires; engineering services, namely, technical design and planning of pipelines for gas, water and waste water