6
Metal structures; metal containers; metal tanks; metal silos; pressure vessels of metal; welded vessels of metal; cryogenic pressure vessels; hydraulic cylinders of metal; vacuum chambers and airlock chambers of metal; high pressure metal cylinders; closing devices of metal for use on containers or vessels; metal scaffolding apparatus; metal pipes; pipe couplings of metal; valves of metal [other than parts of machines]; parts and fittings for all the aforesaid goods
11
Pressure tanks [liquid]; pressure vessels for liquids; autoclaves; drying chambers; pressure controllers and pressure relief valves for gas and water pipes; pressure supervision apparatus [safety apparatus for gas and liquid apparatus]; heat exchangers; ventilation equipment; parts and fittings for all the aforesaid goods
40
Metal fabrication and finishing services; metallurgical processing; metal treatment; anti-corrosion treatment of metal surfaces; cutting of metal; welding; metal plate rolling and forming; information, advice and consultancy relating to any of the aforesaid services
42
Scientific and industrial research and analysis; industrial process development; industrial design services; product development relating to metal structures and metal containers; product development relating to metal pressure vessels; engineering services; engineering design services; metallurgical testing; testing of metals relating to tensile strength, impact resistance, hardness, macrostructure, microstructure, structural integrity and fracture detection; testing of metal articles for leaks and weld integrity; computer programming services relating to industrial design; computer programming services relating to engineering design; information, advice and consultancy relating to any of the aforesaid services