Hot- rolled steel coil for construction GB Q235

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Tianjin
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TT OR LC
Min Order Qty:
25 m.t.
Supply Capability:
100000 m.t./month

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One, introduction

Hot rolled coil is used for continuous casting slab or slab as raw material, after reheating furnace heating, scales entered the roughing mill in the high pressure water, roughing cut is expected by the head, tail, and then enter the finishing mill, the implementation of the computer controlled rolling, finally after rolling through the laminar cooling (computer controlled cooling rate) and coiling machine coiling, become straight hair volume. Hair straightener roll head, tail often forms a tongue shape and fishtail, thickness, width of poor accuracy, edge has wavy, folding, tower and other defects. The volume weight heavier, steel coil diameter is 760mm. (general pipe industry like use. )

2 two, characteristics

Because there is no after annealing treatment, the hardness is very high (HRB greater than 90), mechanical processing performance is poor, only a simplebending process has less than 90 degree directional (direction perpendicular to the rolled).

Three, use 3

Hot rolled products with high strength and good toughness, easy processing and good forming can be excellent performance of welding, which is widely used in ships, cars, bridges, buildings, machinery, boiler, pressure vesselmanufacturing industry.

The scope of application:

(1) after annealing processing into the common cold;

(2) processing galvanized galvanized unit before the annealing treatment;

(3) the basic do not need to process the panel.

4 four, classification

Carbon steel plate, carbon plate, low alloy plate, ship plate, bridge plate, boiler plate, container plate etc.. Rolling hard volumes: under normal temperature,the hot pickling volumes of continuous rolling.

Hot rolled steel strip products include steel (roll) and the shear of steel plate.And steel (coils) can be divided into straight and finishes volume (the volume,smooth rolling and slitting roll).

Hot- rolled steel coil for construction GB Q235

Hot- rolled steel coil for construction GB Q235

Hot- rolled steel coil for construction GB Q235

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Q:How can steel bars and bars be differentiated from each other in different uses?
Wire rod used before the use of steel straightening machine, straightening, blanking, but also in the machine to remove oxidation rust skin, but also in repeated bending and stretching, the intensity has improved.
Q:If the surface shrinkage of wire rod is poor, what will happen to wire drawing?
If the surface shrinkage of the wire rod is poor, the drawing process will break, because the surface shrinkage is the shrinkage of the cross section, and is the plastic index of the wire rod. Because of the low reduction rate of drawing, it is often less likely to occur because of shrinkage during drawing.
Q:Can decarburization occur in low carbon and low alloy wire rods? Why?
According to the truth, because of containing carbon steel, oxidation must occur in the heating process, and alloy steel, some alloy increases the decarburization tendency of carbon steel, low carbon steel so will produce decarburization, especially in high temperature and long time stay in the process.
Q:Is there any difference between the steel bar and the wire rod?
The straight thread steel is divided into three grades, steel material is HRB400, each specification price is: 12-14mm:3270 yuan, 16mm:3220 yuan, 18mm:3140 yuan, 20-32mm:3110 yuan, 36-40mm:3650 yuan. 8-10mm (rolled thread steel): 3210 yuan
Q:Types of wire rods
Hexagonal, fan-shaped and other special-shaped wire rods; the upper limit of diameter has been extended to 38 mm; the plate weight has increased from 40-60 kg to 3000 kg. Because of the development of new heat treatment process, the iron oxide sheet on the wire rod has been obviously thinned, and its microstructure and properties have also been greatly improved.
Q:What is a cold drawn steel wire? What does it usually do?
A low carbon steel wire that is worked out to produce cold working hardening.
Q:Round steel. Wire rod. Is a high wire a kind of thing?
Refer to refer to refer to: refers to the use of high-speed wire rod rolling mill torsion free ". The rolling speed of 80-160 M / s, each weight (disc) in 1.8-2.5 tons, tolerance of high precision (up to 0.02mm), in the rolling process by adjusting the process parameters (especially in the cooling line) to ensure the different requirements for the product.
Q:Is there any difference between wire rod and round steel in steel?
Steel wire and round steel are two different materials.Wire rod refers to the hot-rolled steel bar of 5-22mm diameter or the special-shaped steel of this section. As a result of wire rod delivery, it is also known as wire rod.
Q:Round in high wire and ordinary line what is the difference?
The universal wire and high speed wire are the wire rods (bars) of the rolling mechanism.High wire: refers to the use of high-speed torsion mill rolling wire rod. The rolling speed of 80-160 M / s, each weight (disc) in 1.8-2.5 tons, tolerance of high precision (up to 0.02mm), in the rolling process by adjusting the process parameters (especially in the cooling line) to ensure the different requirements for the product.
Q:What is the diameter of steel wire and the diameter of wire rod, and what's their difference?
The diameter of the steel wire is the diameter of the steel itself, and the diameter of the wire rod is how big it isFor example, you use a 5 mm diameter steel wire coil laps after a large diameter of 1 meters (of course, the middle is hollow)

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