17 Extruded plastic in the form of bars, blocks pellets, rods, sheets, tubes, pipes for use in all manufacture; plastic pipes for conveying air, gas, water; plastic pipes for plumbing; adhesive sealant and caulking compound for industrial and commercial use, adhesive tape for industrial and commercial use; non-metal airhoses and non-metal compressed air pipe fittings; building insulation; woven polypropylene for controlling water drainage; non-metal conduits for drainage, irrigation, and plumbing; non-metal pipe couplings and joints; plastic air conditioner hoses