Sheet piles of metal; ductile iron piles; steel piles; metal structural beams and trusses; steel rods; welding rods; welded structural accessories, namely, tie rod connectors, lifting lugs, internal shaft keys, external shear keys, cold formed clutches, hot rolled clutches, fender connectors, pile shoes; bridge structures; offshore structures, namely, oil platforms, oil rigs; wharf structures, namely, headstocks, pile caps, dolphins, pontoons, gangways; dredging pipes
