Hot Rolled Steel Sheet astm A36 Ss400 Q235b Sheet Carbon Steel Plate 30mm Thick Price

Short Description:

Material: S235JR、S275JR、S355JR、S235J0、S275J0、S355J0、S235J2、S275J2、S355J2(M1)、S355K2 GR50  CJ500V、Grade50、Q345A、Q345B、Q345C、Q345D、Q390C、Q420B、Q460B、Q460C、Q550C、Q550E、Q690C , Q690D, Q195, Grade36, GradeC, GradeD, Q235A, Q235B, SS330, SS400, A36, SS400

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Hot-rolled coils are made of slabs (mainly continuous casting slabs) as raw materials, which are heated and made into strips by rough rolling mills and finishing mills.
The hot steel strip from the last rolling mill of the finishing rolling is cooled to the set temperature by laminar flow, and is coiled into a steel coil by the coiler. The finishing line (leveling, straightening, cross-cutting or slitting, inspection, weighing, packaging and marking, etc.) is processed into steel sheets, flat rolls and slitting steel strip products.
To put it simply, after a piece of billet is heated (that is, the red hot steel block that burns on TV), it is refined and rolled several times, then trimmed and corrected into a steel plate. This is called hot rolling.

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Due to its high strength, good toughness, easy processing and good weldability and other excellent properties, hot continuous rolled steel sheet products are widely used in ships, automobiles, bridges, construction, machinery, pressure vessels and other manufacturing industries.
With the increasing maturity of hot rolling dimensional accuracy, shape, surface quality and other new control technologies and the continuous advent of new products, hot continuous rolled steel plates and strip products have been more and more widely used and have become more and more powerful in the market. competitiveness.


Product Category
Hot continuous rolled steel sheet products include steel strips (coils) and steel sheets cut from them. The steel strip (roll) can be divided into straight hair rolls and finishing rolls (split rolls, flat rolls and slit rolls).
Main Products
Hot continuous rolling can be divided into ordinary carbon structural steel, low alloy steel and alloy steel according to its material and performance. According to different uses, it can be divided into: cold forming steel, structural steel, automobile structural steel, corrosion-resistant structural steel, mechanical structural steel, welded gas cylinder and pressure vessel steel, pipeline steel, etc.
Production Process
The hot-dip galvanizing hot-rolling plate unit adopts the improved Sendzimir method annealing process, and the raw material is hot-rolled pickling coil. The production process is as follows:
Hot-rolled pickling coil → uncoiling → cutting head and tail → welding → inlet looper → improved Sendzimir method horizontal annealing furnace → hot dip galvanizing → cooling after plating → zinc layer thickness gauge → smoothing and straightening → passivation treatment → Inspection table → Electrostatic oiling → Coiling → Weighing and packing → Finished product storage.

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