R4I

Stainless steel pipe systems, included in this class, namely, consisting of stainless steel pipes, pipe junctions, pipe manifolds and pipe bends of stainless steel, and valves of stainless steel, other than parts of machines; tubing and pipe manifolds and laterals of stainless steel or other metals; pipe branches of stainless steel or other metals; branching pipes of metal; pipework of metal; pipe muffs of metal; junctions of metal for pipes; manifolds of metal for pipelines

Physics research; surveying; technical advice and consultancy relating to the design and development of pipe work of metal or of pipe systems; construction drafting