Aluminium tubes, pipes and tube or pipe fittings Tenders , Copper tubes, pipes and tube or pipe fittings Tenders , Copper tube or pipe fittings Tenders , Cast-iron products Tenders , Water distribution pipes and accessories Tenders , Drainage and Sewer Pipes and Fittings Tenders , Taps, cocks, valves and similar appliances Tenders , Taps, cocks and valves Tenders , Valves defined by function Tenders , Central-heating radiator valves Tenders , Valves defined by construction Tenders , Penstock valves Tenders , Construction work for dams, canals, irrigation channels and aqueducts Tenders , Construction work for waterways Tenders , Canal construction Tenders , Water distribution Tenders