6
Cylinders of metal for gas, natural gas, cryogenic liquid, liquid, air, compressed air, liquid air; valves other than for machines including but not limited to valves for industrial installations, pressure reducing valves; pressure actuated rings; pressure filled rings; metal seals; high pressure precision valves of metal and control valves for controlling the flow of air, liquid or gas; powder spray painting stations; steel in the form of ball shots for use in blasting
7
High pressure pumps; pressure pumps; pressure regulating valves; pressure intensifiers; pressure multipliers; pressure reducers; fluid pressure control valves; valves for machines including but not limited to valves for industrial installations; high pressure precision valves of metal and control valves for controlling the flow of air, liquid or gas; apparatus for dispensing liquids or gases into cylinders; hydraulic control apparatus for machines, aircraft, oil rigs, weapons and boats; hydraulic apparatus; hydraulic marine apparatus; hydraulic mechanisms; apparatus for lowering or raising trailers; machines and apparatus for painting; shot blasting machines; apparatus machines for filtering gases
9
Apparatus for producing pressures; apparatus and instruments for measuring pressure; pressure gauges; pressure sensors; gas pressure indicators; pressure sensitive apparatus; breathing apparatus; gas supply apparatus being parts of breathing apparatus; backup breathing apparatus; for use in without limitation aircraft, underwater apparatus, fire fighting equipment, hyperbaric equipment; monitoring apparatus for the control of valves; remote control apparatus for the opening or closing of valves; solenoid operating valves; apparatus for controlling pressure; pressure regulators
11
Level controlling valves; pressure relief valves for gas apparatus; safety valves for gas cylinders or apparatus; apparatus for cleaning gases; apparatus for filtering gases; apparatus for purifying gases
12
Road trailers; bodies for trailers; couplings for towing trailers; suspension apparatus for trailers; trailer chassis; trailers for petrol tankers, gas cylinders and the transportation of liquids and gases including hydrogen
39
Transport; transport of compressed natural gas
40
Metal coating or colouring other than by painting; nickel plating; electro-less nickel plating; filtration of gases; gas processing services; purification of gases
42
Design of pressurised equipment, apparatus, instruments, containers and machines; design of high pressure equipment, apparatus, instruments, containers and machines; design of storage systems, including high pressure storage systems, for liquids, gases, air and compressed air; computer, engineering, industrial, metallurgical, material, product, quality, quality control and safety testing; testing of vehicles including trailers; engineering consultancy services