Rebar In Concrete
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Why does the steel thread have longitudinal ribs?
- The main function of the longitudinal ribs is the force to improve the performance of the transverse ribs, the stress of support surface transverse rib in the longitudinal direction, reducing flange stress concentration, so as to improve the mechanical strength of the reinforced rib, deformation of bond between concrete and steel reinforced concrete, the collaborative work and better.s
How to distinguish the quality of thread steel?
- The quality of threaded steel (rebar spot price) can be used to compare intuitive methods to identify, and today we teach you a few quick identification of shoddy steel small trick.1., inferior steel longitudinal reinforcement is often wavy, prone to fold. Folding is due to shoddy manufacturers in pursuit of high efficiency, the amount of pressure is too large, produce handle, a rolling produce folding, folding products after bending cracks, the strength of steel big drop.2. inferior steel appearance often pitted phenomenon. Ma is due to a defect of groove wear caused by irregular rugged steel surface. Due to the inferior steel manufacturers to pursue profits, often rolling groove rolling most standard.s
What is the sign of steel rebar
- At present, China's iron and steel products implementation standards are national standards (GB, GB / T), industry standards (YB), local standards and enterprise standardss
Cast-in-place with 10 mm reinforcement, a good layer or 8 mm double layer? Why?
- The plate near the gable should be equipped with double - layer reinforced wire mesh. Adding radial reinforcement at the corner of the wall. In the region where the temperature and shrinkage stress are greater, a double layer steel mesh should be installed.s
Are thread steels of coarse steel?
- The thread steel is not coarse steel and the thread steel belongs to the steel. Rough steel refers to the billet after casting steel. The billet has been rolled into various shapes of steel, including plates, profiles, tubes and so on.s
Laiwu steel thread steel trademark color blue and red Qu Qu
- The current steel market shoddy (commonly known as hot rolled ribbed steel rebar) unqualified factors are mainly: 1, the actual size than the nominal size is small, the actual weight of dealers through purchase, the amount of metal delivery weight theory earn profits. 2, the intensity is low. 3, the chemical composition unqualified rate is high. The main reason is that the raw material of the small rolling mill is not qualified, and the steel billet is rolled by soil.s
How much is the difference between the three grade thread steel and the two grade thread steel?
- For some time, due to the supply of three threads, and the two level of demand, resulting in two, more expensive than three.s
What is the carbon content of thread steel?
- The carbon content in the threaded steel is best about 1%, so that it can not only ensure the strength and hardness of the thread steel, but also ensure its plasticity and toughness.s
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