Shaped steel billet is directly cast bymolten steel through continuous casting equipment of steel-making system. Thecross-section of the shaped steel billet is rail shaped or otherspecial-shaped. It is mainly used for rolling section steel and wire rod.
Specifications: ASTM Standard number: [Gr.40]
length 6m, or below 1.5m.
Square billet is directly cast by moltensteel through continuous casting equipment of steel-making system. The sectionwidth and height of billet are equal or have little difference. It is mainlyused for rolling section steel and wire rod.
Wire rods are suitable for a wide range of applications such as:
• fasteners, bolts, rivets, screws
• general purpose wires, electrode wires, industrial wires, agriculture wires
• bush wires, chain rivet wires
• detonator wire, ACSR wires, earth wires
• umbrella ribs, upholstery wires, cycle spokes, needle wires, heald wires, staple pin wire
safety pin wires, card clothing wires, vineyard wires
• tyre and hose reinforcement wires
Channel steel is a kind of long carbon structural steel with concave section, which is made by hot working, normalizing or hot rolling. The raw material is carbon steel or low alloy steel billet with carbon content less than 0.25%. It is mainly used in building structure and vehicle manufacturing, and it is required to have good welding, riveting and comprehensive mechanical properties in use.
At present, the specification of domestic channel steel is between 5-40, that is, the corresponding height is 5-40cm. At the same height, light channel steel has narrower legs, thinner waist and lighter weight than ordinary channel steel. 18-40 is large channel steel, 5-16 is medium channel steel.
The actual specifications and relevant standards shall be marked on the imported channel steel. The import and export order of channel steel is generally determined according to the required specifications after the corresponding carbon steel (or low alloy steel) brand is determined.
Hot-dip galvanized steel are available with a pure zinc coating through the hot-dip galvanizing process. It offers the economy, strength and formability of steel combined with the corrosion resistance of zinc. The hot-dip process is the process by which steel gets coated in layer of zinc to protect against rust.It is Especially useful for countless outdoor and indestrial applications.
Hot rolling is a metalworking process that occurs above the recrystallization temperature of the material. After the grains deform during processing, they recrystallize, which maintains an equiaxed microstructure and prevents the metal from work hardening. The starting material is usually large pieces of metal, like semifinished casting products, such as slabs,blooms, and billets.
With hot-dip aluzinc steel as base metal, after pretreatment (degrease and chemical treatment) and liquid dope with several layer of color, then after firingand cooling, finally the plate steel is called pre-painted aluzinc steel coil. It generally display superior workability,durablity, and weather resistance.