Ordinary steel bars, commonly used as tensioning devices in reinforced concrete and reinforced concrete structures that keep concrete compressed. Deformed steel bars are usually made of carbon steel and have ridges for better mechanical anchoring of reinforced concrete. Steel structures have many advantages: the strength to weight ratio is very good, the metal is easy to connect, the effective shape is available, and the like. Nonetheless, these challenges can best be addressed by fully understanding the actual performance of the metal. a structure. For larger buildings, metal is a key element of the structural system. Steel beams and columns, deformed steel bars,steel joists, steel studs, and aluminum frames are just a few examples of metal structures.
A wise manager not only understands how to build a structure, but also the basics of how a structural system works and how it fails. Engineers, architects and contractors in the Philippines mainly use deformed steel as the basic building material for their projects. However, these bars are available in different sizes and sizes for residential use and large projects such as apartment units and commercial buildings.
Rebar production process:
Rebar is a ribbed steel bar, also known as ribbed bar, usually with two longitudinal ribs and transverse ribs evenly distributed along the length. The shape of the transverse rib is three kinds of spiral shape, herringbone shape and crescent shape. Expressed in millimeters of nominal diameter. The nominal diameter of a ribbed bar corresponds to the nominal diameter of a round bar of equal cross-section. The nominal diameter of the steel bars is 8-50 mm. The recommended diameters are 8, 12, 16, 20, 25, 32, 40 mm. Ribbed steel bars are mainly subjected to tensile stress in concrete. The ribbed steel bar has a greater bonding ability with concrete due to the action of the ribs, and thus can better withstand the external force. Ribbed bars are widely used in a variety of building structures, particularly large, heavy, lightweight, thin-walled and high-rise building structures.steel pipe supplier
Rebar is produced by small mills. The main types of small mills are: continuous, semi-continuous and horizontal. Most of the world’s new and in-use small continuous rolling mills. Popular rebar mills have a universal high-speed rolling rebar mill and a 4-pile high-volume rebar mill.
The billet used in the continuous small rolling mill is generally a continuous casting billet, and its side length is generally 130-160 mm, the length is generally about 6-12 meters, and the billet weight is 1.5~3 tons. The rolling lines are mostly arranged in a flat-upright manner, achieving full-line non-twisting rolling. According to different blank specifications and finished product sizes, there are 18, 20, 22, and 24 small rolling mills, and 18 are the mainstream. Bar rolling is mostly carried out by step-type heating furnace, high-pressure water descaling, low-temperature rolling, headless rolling and other new processes. The rough rolling and medium rolling are developed to adapt to large billets and improve rolling precision,welded pipe supplier. The finishing mill is mainly Improve accuracy and speed (up to 18m/s). Product specifications are generally ф10-40mm, also ф6-32mm or ф12-50mm. The steel grades produced are low-medium-high-carbon steels and low-alloy steels that are in large demand in the market; the maximum rolling speed is 18m/s. The production process is as follows:
Step heating furnace→rough rolling mill→medium rolling mill→finishing mill→water cooling device→cold bed→cold shearing→automatic counting device→bundling machine→unloading gantry.