Pipeline inspection services; Design of pipelines; Locating and marking placement of underground utility pipes, cable or wires; Technical design and planning of pipelines for gas, water, and wastewater

Apparatus for joining plastic pipes; monitoring devices for measuring fluid flow in pipes; electrical detectors for locating underground pipes; pressure relief valves for gas pipes; pressure relief valves for water pipes

[ Containers for industrial and commercial liquids not made of metal; containers for transport, not of metal; non-metallic closures for containers ]