Hot rolled square steel standards and maintenance issues

Mention of hot-rolled square steel, may be more familiar to people engaged in the steel business, yes, now the market demand for hot-rolled square steel is relatively large. But we do not know much about the production of hot-rolled steel technical standards, as well as hot-rolled steel in the use of an important thing to pay attention to is to prevent the hot-rolled steel is corroded, which requires some skills, now let us do a more detailed introduction, in order to deepen our understanding of the hot-rolled steel.

Hot-rolled square steel standard introduction:

Hot-rolled square steel standard product material using national standards, the same as steel plate. Quality and technical standards according to YB/T4212-2010 standard organization of production (Q345B/Q235B refer to GB/T1591-94, GB/T700-88 standards, respectively) experts said that many cables are now running in a relatively harsh environment, if you do not do a good job of certain protective measures, the cable steel is easy to appear some failure. The service life is also longer, if you can do a good job of protection measures, its service life will be longer.

Hot rolled square steel by quality classification? Ordinary steel (P ≤ 0.045%, S ≤ 0.050%) high-quality steel (both ≤ 0.035%) advanced high-quality steel (P ≤ 0.035%.

Standard of hot rolled square steel: (GB699-1988, GB700-1988, GB3077-1988, GB702-1986, QJ/HG02.17-1991).

The standards for hot-rolled square steel apply to hot-rolled round steel with a diameter of 5.5mm~310mm and hot-rolled square steel with an edge length of 5.5mm~200mm; hot-rolled flat steel for general purposes with a thickness of 3mm~60mm, a width of 10mm~200mm, and a rectangular cross-section; hot-rolled hexagonal steel with an opposite side distance of 8mm~70mm and hot-rolled octagonal steel with an opposite side distance of 16mm~40mm. Hot rolled octagonal steel of a thickness of 4mm to 100mm and a width of 10mm to 310mm, of rectangular cross-section, hot rolled tool steel flat bars.

Hot rolled square steel plate is not too thick, thick have thin; hot rolled square steel for steel plate, including steel plate hot rolled square steel. Hot rolled steel billet hot rolled plate is generally waste and then cut into strips, steel plate is 1200x2000 specified size.

Hot rolled square steel corrosion prevention instructions:

1, the more serious corrosion of the square steel, rust removal is not suitable for long-term storage, should be used as soon as possible.

2, square steel material in the warehouse before to pay attention to prevent rain or mixed impurities, has been rained or soiled material should be used according to its nature of different methods to wipe clean, such as high hardness of the available steel wire brush, hardness of low cloth, cotton and other things.

3, general square steel steel surface removal in the net, do not have to apply oil, but for high-quality square steel, alloy thin square steel plate, thin-walled tube, alloy square steel

tube, etc., rust removal of its internal and external surfaces need to be coated with rust preventive oil before storage.

4, square steel materials should be checked frequently after storage, if rust, should remove the corrosion layer.

Summary: Through the above brief introduction, we should have a general understanding of the standards and attention to the hot-rolled square steel, these are also the key aspects of the hot-rolled square steel, hot-rolled square steel not only has the traditional square steel is difficult to match the advanced technology, but also has a significant economic benefits. With the further improvement and development of this advanced technology, I believe that China's production of hot-rolled square steel will achieve greater success. In addition, hot-rolled square steel in the process of use must pay attention to prevent corrosion.

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