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    henan ,China
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Q235 is a kind of carbon steel. S460QL1 steel grades, Q235 steel is widely used in steel structure construction because of its good toughness, good plasticity, certain elongation, good welding performance and heating performance. Q235A steel plate contains C ≤ 0.22%, Mn ≤ 1.4%, Si ≤ 0.35%, S ≤ 0.050, P ≤ 0.045. Q235B steel plate contains C ≤ 0.20%, Mn ≤ 1.4%, Si ≤ 0.35%, S ≤ 0.045, P ≤ 0.045. Q235C steel plate contains C ≤ 0.17%, Mn ≤ 1.4%, Si ≤ 0.35%, S ≤ 0.040, P ≤ 0.040. Q235D steel plate contains C ≤ 0.17%, Mn ≤ 1.4%, Si ≤ 0.35%, S ≤ 0.035, P ≤ 0.035.

Oxygen (O) is a harmful element in steel such as S460QL1 steel grades. Although manganese, silicon, iron and aluminum are added to deoxidize the steel at the end of steelmaking, they can not be removed completely. During the solidification of molten steel, the reaction of oxygen and carbon in the solution will produce carbon monoxide, which can cause bubbles. Oxygen mainly exists in the form of FeO, MnO, SiO2, Al2O3 and other inclusions in the steel, which reduces the strength and plasticity of the steel. Especially, it has serious influence on fatigue strength and impact toughness.

As a bulk commodity, the rise and fall of S460QL1 steel grades, steel pipe prices are related to many downstream industries, such as construction industry, railway, highway, urban public transport and other infrastructure construction, industry and real estate. The price of S460QL1 steel grades, steel pipe rises and falls every day, and is guided by the quotation market in various places. However, in fact, the procurement of steel pipes is more complicated than this, and the market guide price can only be used as a reference.

The technical characteristics of activated coke dry desulfurization and denitrification are as follows: (1) In view of the complex flue gas working conditions with sulfur, nitrogen, oxygen, high water content and large fluctuations produced by sintering, as well as working conditions with high requirements for removal efficiency and index stability, advanced two-stage activated coke drying Method purification technology; (2) In order to meet the ultra-low emission requirements of particulate matter, proprietary porous plate and microporous plate technology are adopted; (3) Activated coke feeding and unloading adopts advanced rotary sealing valve technology to reduce the powdering rate of activated coke and improve the sealing effect.

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