17 Flexible pipes, not of metal; Flexible pipe and pipe systems comprised primarily of flexible tubes of plastic, non metallic flexible tubes; tubes, flexible hoses, valves of rubber and non-metal fittings for flexible pipes and fittings therefor, the pipes being all non-metal and made of plastic and fibres; Fibre reinforced non metal thermoplastic flexible pipes for conveying natural gas; Nonmetallic flexible pipe and pipeline products, namely, non-metal flexible tubes, flexible hoses, valves of rubber or vulcanized fiber and pipe fittings for rehabilitating pipelines therefor made of plastic and fibers for use in the oil and gas and renewable energy industries, for use as flowlines, risers, jumpers, downlines, and hoses for chemical injection, methanol and glycol (MEG) injection, hydrocarbon production, gas lift, water injection, hydrogen transfer and concrete pumping, all the aforesaid goods not of metal; Non-metallic, flexible thermoplastic composite pipes for use in the oil and gas industry for water injection, chemical injection as well as methanol and glycol (MEG) injection; Non-metallic, flexible thermoplastic composite pipes for use in intervention of wells for use in chemical injection; Non-metallic, flexible thermoplastic composite pipes for conveying fluids of mixtures, slurries of concrete, mineral, sand or nodule slurries, gas for transport or for storage, and power and data transmission functions; Non-metallic fittings, namely, permeation barrier sheets and foils as a component of flexible pipes for use in manufacturing; Pipe insulation in the nature of insulation layers and weight layers for use within flexible pipes; non-metal fittings in the nature of ancillary components for flexible pipes, namely, spare structural parts of flexible pipes, namely, buoyancy support elements, bend restrictors and bend stiffeners, all for flexible pipes; all of the above goods for use in the field of oil and gas infrastructure or thermoplastic composite pipes