... and more popular with the customers. It is mainly used for large-span structures, workshops, warehouses, office buildings, large ... structures, steel bulding, metal building, modular house, steel frame for warehouse,workshop, garage etc, steel beams, other riveting and ... YX40-320-960 11)Accessories:Semi-transparent skylight belts, Ventilators, down pipe, outer gutter, etc 12)Surfrace: Paint or hot dip ...