Steel pipe pilings; steel pipe joints and couplings; metal materials for building or construction, namely, metal canopies, metal reinforcement materials for building, building materials in the nature of metal countertops for further installation, materials of metal for scaffolds, ducts and pipes of metal for central heating installations, manifolds of metal for pipelines, wall claddings of metal for building, roof gutters of metal, cladding of metal for building, building panels of metal, fra...