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Anping County Weishi Metal Wire Co., Ltd
E District, Wire Mesh Big World,Anping County,Hebei
0318-8068609 8068619 8068629
E District, Wire Mesh Big World,Anping County,Hebei
0318-8068609 8068619 8068629
| Cold-rolled ribbed steel bar is used as hot-rolled coil cold-rolled by multi-channel tracks, together with pressure by the rib and the elimination of internal stress after the formation of a surface with two or three crescent-shaped steel. In 1968 from Germany, the Netherlands, Belgium successfully developed in 1973 in Europe (Germany, Austria, Italy, the United States, Britain, etc.) on the development of a large number of applications received. And national standards. International Organization for Standardization (ISO) has developed international standards. As a construction of steel into the concrete structure of national norms, in these countries, cold-rolled ribbed steel bars has been widely used in construction, highways, airports, municipal, water and electricity in the pipeline. In 1994, the annual output of 4,500,000 tons EC. Neighboring countries in China, Singapore and Malaysia have also been made in construction and public works in the wide application of Singapore only cold-rolled ribbed steel bars on the annual usage of 150,000 tons more than in. Cold-rolled ribbed steel bars or less the same intensity level of the countries are in 550N/mm [~ 2] from top to bottom, specifications 4 9mm. For ordinary reinforced concrete structures, such as cast-in-place floor, foundation slab of power and distribution of reinforcement bars, the distribution of shear reinforcement, the stirrups, such as beams and columns. International standard ISO10544 1992 (E) the provisions of the mechanical properties of steel are as follows: yield strength 500N/mm [~ 2], tensile strength 550N/mm [~ 2], elongation rate (from 5 times the diameter of S) to 12% |
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