CP.

Plastic tubes for conveying natural gas, coal gas and water; non-metal tubes for conveying natural gas, coal gas and water; non-metal pipe muffs for use with pipes for conveying natural gas, coal gas and water; non-metal pipe junctions for use with pipes for conveying natural gas, coal gas and water; semi-processed plastic in the form of films, sheets, tubes, bars, or rods for use in manufacture of devices for conveying natural gas, coal gas and water