Hot Selling Deformed Reinforcing Steel Bar

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100 m.t.
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1000 m.t./month

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Product Description:


Grade HRB335-2007 HRB400-2007 HRB500-2007 
Quenched or microalloyed 
DIA 12.0mm~40.0mm deformed bar



GB1499 Grade HRB335-2007 ( quenched or microalloyed)

GB1499 Grade HRB400-2007 (quenched or microalloyed)

GB1499 Grade HRB500-2007 ( microalloyed 20MnSiNb and 20MnSiTi)

Cutting to length: 9 or 12  1500-5000(KG) (Max.500kg/m)

Cutting to length: 6 or 7 or 8   1500-4000(KG) (Max.500kg/m)

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Q:Is the tie bar used for the longitudinal joint of cement concrete pavement threaded or smooth? Where is the dowel bar for the transverse joint construction?
Please note that the recommended answer is really! Do not know the professional knowledge, do not find a copy and paste to harm people! The tie bar is a screw bar, and the tie bar is a device for balance. The steel bar can be used to connect with the concrete! The dowel bar, as the name suggests, is the transfer of force, must use light round steel bar, when powerful, light round steel and concrete have movable interface, can conduction force!
Q:How is thread steel made?
The billets used in continuous small mills are generally continuous billets, the length of which is usually 130~160mm, the length is about 6~12 meters, and the billets are 1.5~3 tons in weight. The rolling line is mostly flat interchange arrangement to realize all round rolling without torsion. According to different billet specifications and finished sizes, there are 18, 20, 22 and 24 small mills, 18 of which are mainstream. The use of bar rolling reheating furnace, high pressure water descaling, in addition to the new technology of low-temperature rolling, endless rolling, rolling, rolling development to adapt and improve the precision of rolling billet, rolling mill is mainly to improve the accuracy and speed (up to 18m/s). Product specifications are generally phi 10-40mm, Phi Phi 6-32mm or 12-50mm. The steel grades produced are low, medium and high carbon steels and low-alloy steels, which are widely needed in the market. The maximum rolling speed is 18m/s. The production process is as follows:Reheating furnace, roughing mill, rolling mill, rolling mill, water cooling device, cooling bed, cold shear, automatic counting device, bundling machine, unloading bench is calculated from the Shanghai kuanli Steel Co. Ltd. to provide thread steel weight: diameter * * outer diameter theory 0.00617=kg/m theory and 6.50.260 steel manufacturers specifications Jiuzheng 8.00.395 Jiuzheng steel 100.617 steel 120.888 steel 141.21 nine nine nine nine nine steel 161.58 steel 182 steel 202.47 steel 222.98 steel 253.85 nine nine nine nine nine steel 284.83 steel 326.31 steel.
Q:Is the theoretical weight of threaded steel and round steel the same?
The theoretical weight of threaded steel and round steel is the same. The middle part of the steel bar size ratio is small, the design time actually unit weight are the same, just screw steel crescent and transverse ribs prominent, resulting in heavy steel should be better than the illusion of formula is 0.00617 multiplied by the square of the diameter / m.
Q:Are steel bars used more in high-rise buildings or steel?
Look at the architectural design requirements and seismic grade, light steel reinforcement is mainly stirrups, columns, beams, shear walls generally use thread steel, plate bars and distribution bars are generally cold and twisted steel bars
Q:What are the main use of threaded steel?
The difference between round bar and round bar is that the surface has longitudinal ribs and transverse ribs, usually with two longitudinal ribs and transverse ribs uniformly distributed along the length direction.
Q:What is thread steel for?
1. nominal diameter range and recommended diameterThe nominal diameter of the thread steel is from 6 to 25mm, and the nominal diameter of the standard steel is 6, 8, 10, 12, 14, 16, 20, 25,, 32, 40 and 50mm.Allowable deviation of surface shape and dimension of 2. ribbed steel discThe ribbed steel bars with ribbed threads shall meet the following basic requirements:The angle between the transverse ribs and the axis of the steel disc should not be less than 45 degrees. When the angle is not greater than 70 degrees, the direction of the cross section of the thread steel is opposite to that of the upper rib on both sides;The transverse rib and the spacing l shall not be greater than 0.7 times the nominal diameter of the steel;The angle between the sides of the transverse rib and the surface of the threaded steel shall not be less than 45 degrees;The sum of the gap (including the width of longitudinal ribs) between the ends of the cross bar and the end of the cross bar of the threaded steel shall not be greater than 20% of the nominal circumference of the thread steel;When the rebar nominal diameter less than 12mm, the relative rib area should not be less than 0.055; the nominal diameter of 14mm and 16mm, the relative rib area should not be less than 0.060; the nominal diameter is more than 16mm, the relative rib area should not be less than 0.065.
Q:Is the finish steel 3 grade steel?
The prestressed concrete thread reinforcing bar (also known as finishing thread reinforcing bar) is a kind of bar with big diameter, high strength and high dimension precision, which is rolled on the whole steel bar. The steel bar is screwed at any cross section with a connector with an internal thread to connect or screw on the threaded nut for anchoring. The fine rolled rebar is widely used in large water conservancy projects, continuous beams and large frame structures in industrial and civil buildings, highways, railways, large and medium span bridges, nuclear power plants and ground anchor projects. The utility model has the advantages of simple connection, simple anchoring, strong adhesive force, safe and reliable tension and tensioning, convenient construction, etc. the steel bar is saved, and the area and the weight of the component are reduced.
Q:Why is thread steel thinner than crude?
Because the surface has a thread shape, it can increase the firm bond with the concrete. The longitudinal reinforcement and stirrups shall be used preferentially in the concrete members. Because the rebar is low alloy steel and its price is higher than that of low carbon round steel, the construction unit or design unit usually starts from the practical angle of the general civil building
Q:The difference between wire and thread steel, wire and thread steel difference knowledge
Wire rods are generally round steel bars, the cross section is usually round, and the finished steel bars with smooth surface are represented by HPB. The wire rods are mainly used as reinforcing bars, welded structures or reprocessed raw materials. In the construction of wire rod, the dosage is also one of the varieties of steel.
Q:How to distinguish the quality of thread steel?
Quality materials are more standardized in terms of trademark and lettering. And inferior steel has no distinct brand mark.

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