6 Transportable, modular and prefabricated buildings of metal; structures of metal, namely, modular, portable, prefabricated and floating structures of metal for the oil and gas industry, floating docks of metal, metal pontoons and structural supports therefor, buoyancy metal cans used to support decking and floating structures, anchors, metal storage tanks, general purpose metal storage containers, large steel plate structures for the storage, transportation and processing of liquids and gases, metal pillars for buildings, and metal reinforcement materials for building; framework of metal for building; prefabricated platforms of metal; floating docks of metal, for mooring boats; steel tubes and steel pipes; manifolds and termination assemblies, branching tubes, rigid and flexible flow lines, risers, and tie-in spools, all of metal for use with pipelines; steel molding plate; reinforcing materials of metal for pipes; metal storage tanks; metal fluid storage tanks; liquefied gas storage tanks of metal; metal tanks for storage featuring a floating roof; metal evaporation tanks for changing liquid into vapors; fittings of metal for building, namely, internal floating lids of metal for use with gas or liquefied gas storage tanks; building materials of metal; building panels of metal; steel plate; fittings of metal for building; mooring bollards of metal; prefabricated components of metal for building; clips of metal for cables and pipes; common metals, unwrought or semi-wrought; process equipment and internals for the production, refining, storage, transport, distribution and processing of natural resources, liquids, and gases, namely, metal pipes for liquid and gas transfer, metal pipe fittings, metal penstocks, pipes and conduits, containers of metal for liquid fuel, metal storage tanks, metal cylinders for compressed gas or liquids, sold empty, mesh wire with a multifilament component, expanded metal intertwined with a multifilament component, metal distillation columns, column packing for reactive distillation columns being catalytic metals or mixtures thereof for producing hydrocarbons and hydrocarbon based products, water settling tanks of metal