Plastic sheets or foils used on or in connection with steel or concrete work,

Architectural concrete products for building purposes; concrete articles for building walls; concrete articles for retaining slopes; concrete articles for stabilising slopes; concrete beams; concrete blocks; concrete building elements; concrete products for use in building; concrete products for use in gardens; concrete products for use in landscaping; concrete products for use in roadways; precast concrete beams; precast concrete building elements; precast concrete girders; reinforced concrete; structural elements of concrete

Building and construction products including pre-cast concrete pipes box culverts, access chambers, arches, tanks, railway sleepers and prestressed and reinforced beams; none of the foregoing being moulded doorskin - woodchip mouldings, wooden doors, timber and fibre cement products and fibre cement decorative sheeting

Aggregate, sand, concrete, concrete products and pipes, pre-cast concrete products, railway sleepers, cementitious binders, cement

Plastics pipes, plastics fittings for pipes, plastics sheeting being goods included in class 17

Steel pipes applicable for various industrial purposes, including water supply, gas supply, hydroelectric penstocks, piles, standards or poles for supporting street lamps and telegraphic, electric lighting and electric tramway wiring and also the following articles composed wholly or mainly of steel-dished and flanged ends for steel pipes, liquid storage tanks and pressure vessels, all being goods not included in other classes,

Concrete pipes for various industrial purposes, including water supply, drainage, sewerage and irrigation, and for lamp standards, septic tanks and well linings, and the following articles composed wholly or mainly of concrete, anchor blocks, box culverts, crib blocks, fence posts, garden seats, grease traps, guttering, incinerators, kerbing, manhole units, paving slabs, sewerage fittings, silo staves, troughing, water stave tanks, pretensioned beams and postensioned beams,

Installations for waste water engineering

Non-metallic civil engineering structures

Installations for waste water engineering

Non-metallic civil engineering structures

Plastic sheets or foils used on or in connection with steel or concrete work namely concrete pipes

Building and structural materials; building materials made of concrete; concrete products reinforced with steel and other materials; protective material, not of metal (including but not limited to polymer) used to prohibit ingress of solids, liquids or gases into or through building and structural materials