Hot rolled ribbed steel bars (HRB400E-500)

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Loading Port:
Tianjin
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TT OR LC
Min Order Qty:
1000 m.t.
Supply Capability:
120000 m.t./month

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Product Description:

Reinforcing bar (Rebar) refers to the use of reinforced concrete and prestressed concrete with steel, its cross section is round, sometimes for the square with rounded corners. Including light round bar, ribbed steel bar, torsion bar. Reinforced concrete with steel bar is refers to the reinforced concrete reinforcement with straight or plate of strip steel, its appearance is divided into two kinds, light round steel and deformed steel delivery status for the straight bar and wire rod in two. Light round bar is really a small round steel and ordinary low carbon steel wire rod. Deformation is surface ribbed steel bar, usually with 2 longitudinal and cross rib of uniform distribution along the length direction. The appearance of cross rib is spiral, chevron, crescent 3 kinds. With nominal diameter mm number representation. Equals the nominal diameter is equal to the cross section deformation of reinforced light round bar nominal diameter. Reinforcement of nominal diameter is 8-50 mm, recommends to the diameter of 8, 12, 16, 20, 25, 32 and 40 mm. Steel grade: 20 mnsi, 20 mnsi MNV, 25, BS20MnSi. Rebar in concrete main tensile stress. Deformed bars as a result of the action of rib, and concrete have larger bonding ability, thus better able to withstand the role of external force. Steel is widely used in various building structures. Especially large, heavy, light thin wall and high-rise building structure.


Steel processing, steel processing to table and design review, check the material list for errors and omissions, for each steel bar to press

Material list to check whether meet the requirements, after these two checks, then press the material list sent out samples, trial production of qualified rear can batch production, processing and good reinforcement to neatly stacked in order.

Construction such as the need to be reinforced by substitution, must fully understand the design intent and substitution material performance, strictly abide by the current design code of reinforced concrete rules, not to area such as the substitution of low strength of high strength steel reinforcement. Any important parts of a reinforced substitution, shall agree with the consent of party a, design unit, and have a written notice shall be substitution.


(1) the steel surface should be clean, sticky oil, dirt, rust must be cleaned before use, can be combined with cold-drawn rust removal process.

(2) reinforced straightening, usable mechanical or manual straightening. After straightening of steel can not have local small bending, die bending, wavy, its surface scars should not be made of steel decreases by 5%.

(3) the steel bar cutting should be according to the number, diameter, length and quantity, the length is tie-in, first cutting long expected, by cutting short expected to reduce short head, and shorten the steel to save steel.

(4) steel hook or bend:

1) steel hook. There are three kinds of forms, respectively semicircle hook, hook and hook. After bending, bend endothelial contraction, skin

Extension, axis length is constant, bend arc formation, size is greater than the baiting size after bending, bending modifier should be considered.

Reinforced bending diameter of 2.5 d heart, straight part for 3 d. Steel hook increase the length of the theoretical calculation value: counter rotating round hook is 6.25 d, the straight

Hook is 3.5 d, the hook is 4.9 d.

(2) the bending of steel. Middle bending diameter D bend, not less than five times the diameter of the reinforcing steel bar.

(3) the stirrup. Stirrups should be done at the end of the hook, hook form should meet the design requirements. Stirrup adjustment, is the hook to increase the length and bending adjustment

Value or the difference between the two and, according to the amount of stirrup outsourcing size or inside the package size.

(4) reinforced blanking length should be according to the component size, concrete cover thickness, rebar bend modifier and hook to increase the length of the provisions as comprehensive exam

Lv.

A. straight reinforced blanking length = member length - protective layer thickness increase length + hook,

B. turn up steel blanking length = straight length - bend modifier + + inclined curved length increase length of hook,

C. blanking length = stirrup stirrup inner perimeter + modifier + hook to increase length of stirrup.


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Q:How much does a futures screw do?
More than 2000 dollars in one hand. Futures show a ton of the price, he is ten tons per hand. Suppose ten tons is 27000, suppose. If Futures Company receives 10% margin. That's 2700 dollars, one hand.
Q:What is the content ratio of the screw steel and manganese steel?
The standard type of high manganese steel Mn13 steel and Hadfield steel, high manganese steel castings in China National Standard (GB/T5680-1998) grade: ZGMn13-1, ZGMn13-2, ZGMn13-3, ZGMn13-4, ZGMn13-5; ASTM (ASTMA128/A128M-1993) standard austenitic manganese steel casting steel are: ASTM-A (UNS-J9110.
Q:Is the theoretical weight of threaded steel and round steel the same?
The rebar is a kind of small section steel, mainly used for the skeleton of reinforced concrete construction members. In use, some mechanical strength, bending deformation property and welding performance are required. The raw steel billet for the production of threaded steel is carbon structural steel or low alloy structural steel which is treated by calm melting, and the finished steel bar is delivered in hot rolling forming, normalizing or hot rolling state.
Q:14 screw steel 1 meters multiple?
Classified according to geometric shapes, according to the cross section of the rib section and the spacing of the ribs for classification or classification, such as the British Standard (BS4449), the thread steel is divided into type I, type ii. This classification mainly reflects the tightening performance of the threaded steel.
Q:What does "4EDT6" mean on thread steel?
There are many kinds of steel. It is a kind of long strip steel with definite cross section shape and size. It is divided into two kinds of simple and complex sections according to their cross section shapes. The former includes round steel, Fang Gang, flat steel, six angles and angles; the latter include rail, I-beam, channel steel, window frame steel and profiled steel. Small diameter steel wire in 6.5-9.0mm is called wire rod.
Q:What is the difference between the material of steel thread and its use?
The grade of thread steel is composed of the minimum value of the yield point of HRB and brand. H, R, and B are the first letters in English for hot-rolled (Hotrolled), ribbed (Ribbed) and reinforced (Bars) three words. Hot rolled ribbed bar is divided into HRB335 (old No. 20MnSi), HRB400 (20MnSiV, 20MnSiNb, veteran, 20Mnti), HRB500 three brands.
Q:What's the difference between finish rolling thread steel and ordinary thread steel?
The rebar used in prestressed concrete is a kind of bar with big diameter, high strength and high dimension precision, which is rolled with an external thread on the whole reinforcing 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.
Q:Are rebar bars = rebar?
Generally speaking (not absolute circle) steel is usually made of plate steel as the main form of packing, while threads are usually packed in straight strips.Turn left and turn right |
Q:Thread steel 20*9 one is 2.001T. How many pieces of this one?
Thread steel 20*9, one is 2.001T, and this one has about 90. Thread steel 20*9, parameter is 20mm in diameter, length is 9m.
Q:Like a steel rebar and wire spiral, is the same? What's the difference?
Generally, most of the diameter of thread steel in 10-34mm, while the general disk diameter less than 10mm, but also because of too small so often set up the price must be placed, what will be a little expensive disk. A house built of steel plate with the words to be used for different purposes. The price of concrete is not clear.

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