3327001 Concrete products, prestressed 3327002 Concrete products, precast 3327003 Concrete products, centrifugally cast 3327005 Concrete products, hydraulically pressed 3327006 Concrete products, lightweight 3327007 Concrete products, monolithic 3327008 Concrete products, refractory 3327009 Concrete products, autoclave cured 3327010 Concrete products, steel reinforced 3327011 Concrete products, glass fibre reinforced 3327013 Concrete products, plastic coated 3327015 Concrete products, acid resistant 3327016 Polymer concrete products 3327018 Sandwich panels, concrete 3327020 Blocks, concrete 3327021 Pipes, concrete 3327023 Coastal defence units, concrete 3327025 Tanks and troughs, concrete 3327026 Catch basins/pits and covers, concrete 3327027 Grease interceptors (grease traps), concrete 3327028 Casks and vats, concrete 3327029 Safes and boxes, concrete 3327030 Well casings and covers, concrete 3327031 Storage bins, concrete 3327032 Coal bunkers, concrete 3327033 Litter bins, concrete 3327034 Cisterns, concrete 3327035 Separators, concrete, oil/grease-water 3327036 Cable conduits, concrete 3327037 Kerbs, channels, gullies and culverts, concrete 3327038 Traffic barriers, safety, concrete 3327040 Bicycle stands, concrete 3327041 Signposts, concrete 3327044 Girders, reinforced concrete 3327045 Bridge, viaduct and road elements, concrete 3327046 Subway units, concrete 3327047 Tunnel segments, concrete 3327049 Tunnel linings, concrete 3327051 Manholes, hydrant pits and inspection chambers, concrete 3327052 Manhole, duct and trench covers, concrete
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