... rods and shapes can be fabricated using common tools and equipment. They can be punched, drilled, milled, sawed, ... flag pole, oil sucking rods, bolt, stair, ladder, waste treatment equipment, greenhouse structures, scaffold, portable work platforms, cooling tower, ... Pipe: gutters, firewater/ cooling water /gas /drinking water/ waste water pipe6)Building: roofing laminate, flat roof, door surrounds, ...