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Product Description
The bar is a simple section profile, which is generally delivered in straight strips. The varieties of bars are divided into circular, square and hexagonal according to the cross-sectional shape, as well as threaded steel bars for construction. The latter are periodic section profiles and are sometimes called ribbed steel bars. The cross-sectional shape of the bar is mainly circular. It is generally believed that the cross-sectional diameter of the bar is Φ9~300mm.
Bars are widely used in construction, machinery, automobiles, ships and other industrial fields, 70% of which are used for construction, and the rest are used for various shafts, bolts, nuts, anchor chains, springs and other materials. Therefore, the development of the iron and steel industry is of great significance. my country is a developing country, housing still needs a lot of development, and the demand for construction steel will be very high for a long time. In addition, with the improvement of people's living standards, the corresponding demand for automotive steel will also increase. In addition to the direct application of threaded steel bars in buildings, a considerable part is processed into various shaft parts.
Grade | C | Si | Mn | Cr | Ni |
304 | ≤0.07 | ≤1.00 | ≤2.0 | 18.00~20.00 | 8.00~10.50 |
304L | ≤0.030 | ≤1.00 | ≤2.0 | 18.00~20.00 | 9.00~13.00 |
310S | ≤0.08 | ≤1.00 | ≤2.0 | 24.00~26.00 | 19.00~22.00 |
316 | ≤0.08 | ≤1.00 | ≤2.0 | 16.00~18.00 | 10.00~14.00 |
316L | ≤0.03 | ≤1.00 | ≤2.0 | 16.00~18.00 | 12.00~15.00 |
321 | ≤0.08 | ≤1.00 | ≤2.0 | 17.00~19.00 | 9.00~13.00 |
904L | ≤0.02 | ≤1.00 | ≤2.00 | 19.00~23.00 | 23.00~28.00 |
2205 | ≤0.03 | ≤1.00 | ≤2.0 | 22.00~23.00 | 4.5~6.5 |
2507 | ≤0.03 | ≤0.08 | ≤1.20 | 24.00~26.00 | 6.00~8.00 |
Advantages of stainless steel bar:
1. Wide Specifications Range;
2. Pure steel chemical composition;
3. Outstanding mechanical properties;
4. Good performance after welding;
5. Good shape and high precision;
6. Excellent corrosion-resistant and long service life.
The cross-sectional shape of the bar is simple, and it is much larger than the general cross-section of the wire, so the heat dissipation is slow, the allowable rolling time is long, and the problem of large temperature difference between the head and the tail is not prominent, but the upper limit product is prone to insufficient compression ratio. Like other hot rolling, in order to be able to roll products with high dimensional accuracy, it is necessary to ensure that the heating is uniform and consistent, the stiffness of the rolling mill is as high as possible, and the cooling is consistent during rolling. There are also changes in the pass shape caused by wear during rolling, which affects the lasting stability of rolling.
Bar use
The modern national economy contains many sectors, such as industry, agriculture, transportation, construction, commerce, health, etc., which are all important components of the national economy. The metallurgical industry is an important part of modern industry. The metallurgical industry provides high-quality raw materials for the machinery manufacturing industry, and the machinery industry in turn can provide excellent mechanical equipment for other industries
