Aluminum plate is the thickness of above 0.2mm to below 500mm, more than 200mm width, length within 16m aluminum material is called aluminum sheet or aluminum sheet, below 0.2mm for aluminum,200mm width within the row or strip (of course, with the progress of large equipment, the widest can do 600mm aluminum plate is also more)

Rebar is a rebar with a ribbed surface, also known as a ribbed bar, usually with 2 longitudinal ribs and transverse ribs evenly distributed along the length. The shape of the transverse rib is spiral shape, herringbone shape, crescent shape 3. Expressed in millimeters of nominal diameter. The nominal diameter of a ribbed bar is equivalent to the nominal diameter of a circular bar with equal cross section. The nominal diameter of the steel bar is 8-50 mm, and the recommended diameter is 8, 12, 16, 20, 25, 32, 40 mm

The hot metal billet is rolled into 6.5mm thick steel bar, that is, wire rod, and then put it into the wire drawing device to draw into different diameter lines, and gradually reduce the aperture of the wire drawing plate, cooling, annealing, coating and other processing technology to make a variety of different specifications of wire. It contains iron, cobalt, nickel, copper, carbon, zinc, and other elements

U-type steel is a widely used in steel structure of the construction of purlins, wall beams, can also be combined into lightweight roof truss, bracket and other building components, in addition, can also be used in mechanical light manufacturing columns, beams and arms. It is widely used in steel structure plant and steel structure engineering. It is a common construction steel. It is made by cold bending of hot coil plate. U-type steel has thin wall, light dead weight, excellent section performance and high strength. Compared with traditional channel steel, the same strength can save 30% of materials

Galvanized steel pipes are divided into cold galvanized steel pipes and hot galvanized steel pipes. Cold galvanized steel pipes have been banned, and the latter has been advocated by the state to be used temporarily. In the 1960s and 1970s, developed countries in the world began to develop new pipes and gradually banned galvanized pipes. China Ministry of Construction and other four ministries and commissions have also issued a document stating that galvanized pipes have been banned as water supply pipes since 2000. Galvanized pipes are rarely used for cold water pipes in new residential areas, and galvanized pipes are used for hot water pipes in some residential areas. Hot-dip galvanized steel pipes are widely used in fire fighting, electric power and highways.

The galvanized steel wire surface is smooth, bright and clean, without cracks, knots, pricks, scars and rust. The galvanized layer is uniform, strong in adhesion, durable in corrosion resistance, excellent in toughness and elasticity. Tensile strength should be between 900Mpa-2200Mpa (wire diameter φ 0.2mm to φ 4.4mm). The twisting times (φ Φ0.5mm) should be more than 20 times, and the repeated bending should be more than 13 times.