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Poles of metal; Pre-fabricated and custom engineered structural steelwork, namely, steel frames, steel sub-frames, and preformed frame members for use in construction of highways, roadways, railways, bridges, high-voltage electrical transmission and distribution utilities, telecommunications utilities, and electrical power generation utilities; Metal ladders; Pre-fabricated and custom engineered structural parts of metal, namely, beams, tubing, angle, channel, lateral braces, gussets, plates, guard rail, and formed-plate shell halves for use in transportation infrastructure, energy utilities infrastructure and telecommunications infrastructure; Pre-fabricated metal platforms; Stairs and railings of metal for use in structures of transportation infrastructure, energy utilities infrastructure and telecommunications infrastructure; Flooring of metal; Pre-fabricated and custom engineered structural parts of metal, namely, beams, tubing, angle, channel, lateral braces, gussets, plates, guard rail, and formed-plate shell halves for use in construction of highways, roadways, railways, bridges, high-voltage electrical transmission and distribution utilities, telecommunications utilities, and electrical power generation utilities; Gratings of metal; Ladder supports of metal; Pre-fabricated and custom engineered structural parts of metal, namely, beams, tubing, angle, channel, lateral braces, gussets, plates, guard rail, and formed-plate shell halves for construction of high-voltage electrical sub-stations and electrical power distribution networks; Pre-fabricated and custom engineered metal structures, namely, simple span bridges, A-frames, H-frames, switch stands, bus stands, transformer platforms, grounding mats, and CCTV stands for use in transportation infrastructure, energy utilities infrastructure and telecommunications infrastructure; Pre-fabricated and custom engineered metal structures, namely, metal posts, metal beams, metal rails, metal tubes, metal pipes, and preformed lengths of metal, namely, beams, tubing, angle, channel, guard rail, and formed-plate shell halves

High voltage electrical transmission and telecommunications masts, towers and support structures thereof; Support structures, masts and towers, namely, static masts, lighting masts, and cellular communications towers for use in transportation infrastructure, energy utilities infrastructure and telecommunications infrastructure; Electrical power distribution and transmission devices, namely, electrical bus bars for high-voltage electrical transmission and distribution utilities

Warehousing services, namely, storage, staging and packing for transportation of parts of metal, transformers, insulators, corona rings, armor-rods, surge arresters, circuit breakers, circuit switchers, voltage regulators, fuses, capacitors, relays, rectifiers, electric power converters for use in construction of high-voltage electrical transmission and distribution utilities, telecommunications utilities, and electrical power generation utilities; Warehousing services, namely, storage, staging and packing for transportation of parts of metal for use in construction of highways, roadways, railways, and bridges

Custom fabrication and manufacture of structural parts of metal for use in transportation infrastructure, energy utilities infrastructure and telecommunications infrastructure in the nature of metal structures and metal hardware used in construction of highways, roadways, railways, bridges, high-voltage electrical transmission and distribution utilities, telecommunications utilities, and electrical power generation utilities

Engineering and design services, namely, engineering and design services in connection with parts, components, structures and sub-structures for use in transportation infrastructure, energy utilities infrastructure and telecommunications infrastructure