metal pipes; metal pipes with plastic coating; metal goods, namely, pipelines for transporting bulk materials, fluids and gases; building materials, namely, metal columns; metal armatures for use in the pipe-lying industry; manually operated metal ball valves; non-return valves of metal not including machines elements; metal pipe fittings, namely, sight glasses; metal pipe bellows; dip and inlet metal pipes lined with plastic, sold as a unit; metal industrial hoses; chemical hoses for aggress...