Hot Rolled Steel Round Bar 6mm-150mm

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Loading Port:
Tianjin
Payment Terms:
TT OR LC
Min Order Qty:
-
Supply Capability:
100000 m.t./month

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Product Description:

Specifications of Chinese Standard Round Bar

1. Grade: Q195, Q235, Q345

2. Diameter: 6mm-150mm

3. Length: 6m, 9m, 12m or as customer’s request

4. Tolerance: Within ±5% for weight; ±2mm for diameter

5. Note: The price can be better is the quantity is good

6. Chemical composition

Alloy No

Element (%)

C

Mn

S

P

Si

Q195

0.06-0.12

0.25

0.05

0.045

0.3

Q235

0.12—0.20

0.3—0.7

0.045

0.045

0.3

Q345

0.2

1.00-1.60

0.045

0.045

0.55

Usage and Applications of Chinese Standard Round Bar

1. Chinese standard steel bar is often used where large amounts of steel need to be formed, for example as structural steel.

2. And we can use this kind of product on the performance of the mechanical parts if the demand is not very high.

3. Steel round bar is used in construction and a large number of architectural and engineering structures.

Packaging & Delivery of Chinese Standard Round Bar

Packaging Detail: All goods are packed in bundle with steel strips and shipped by break bulk vessel or container (depend on target market and different ports)

Delivery Detail: 45 days

Trade terms: FOB, CFR, CIF

MOQ: 25 tons per specification; we can negotiate the quantity if the specification is normal or we have stock of one specification.

Weight: The price invoicing on theoretical weight basis or actual weight basis depends on customer’s request.

Shipment: The shipment of bulk break or container is depends on customer’s request and the situation of the port of destination.

Documents given: Full set of original clean on board bill of lading; Original signed commercial invoice; Original packing list; Policy of insurance; Certificate of origin and what the target market needs.

Production Flow of Chinese Standard Round Bar

1. The common processes are preheated forging quenching, dual refinement solution process, cooling quenching and isothermal quenching. We use heat treatment for dual refinement solution process.

2. Material prepare (billet) — heat up — rough rolling — precision rolling — cooling — packing — storage and transportation

Characteristics of Chinese Standard Round Bar

1. The steel in which the main interstitial alloying constituent is carbon in the range of 0.12–2.0%.

2. As the carbon percentage content rises, steel has the ability to become harder and stronger through heat treating; however it becomes less ductile.

3. Quality should be in conformity with the specification of the manufacturer. Quantity and packing conditions should be in conformity with the term in the contract.

4. Regardless of the heat treatment, higher carbon content reduces weld ability. In carbon steels, the higher carbon content lowers the melting point.

Chinese Standard Round Bar



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Q:Are steel and round steel the same thing?
Yuan steel and round steel are the same thing, they are round steel.
Q:Use of stainless steel round bar?
Stainless steel round bar has a broad application prospect, and is widely used in hardware, kitchenware, shipbuilding, petrochemical, machinery, medicine, food, electricity, energy, aerospace and other architectural decoration. Equipment, chemicals, dyes, paper making, oxalic acid, fertilizer, etc.; equipment for photography, food industry, coastal areas, ropes, CD poles, bolts, nuts, etc..
Q:Why can't the grounding device be replaced by steel bar instead of round steel?
The mechanical strength of the steel thread is destroyed. Because the supporting point is only the ground, it is easy to cut the steel directly if the thread is not vertical. Therefore, we need to use angle iron, steel pipe or smooth steel round bar.
Q:Are the bolts for the round bar or round steel?
If in some large-scale concrete component under the condition of some units to prevent run mode is used, the bar, the bar is the best quality, and the tensile strength is great, because the price advantage is not, it is generally not recommended to use the bar as a pull screw.
Q:How can I connect channel steel and round steel?
Can first welding a large circular steel plate and steel bar etc. in the channel to the end faces of the circular plate thickness should be more than 10mm, then the circular plate side angle steel and round steel bar to coincide welding, chamfering, need full welding between the two.
Q:Are more bars used in high-rise buildings?
The State advocates the use of new steel grades and designs responsive to national policies.Xingang are screw steel, screw thread steel with multiRound bars are often used in stirrups
Q:How can a round steel weld on a flat steel plate be flat and qualified?
On both sides of the steel and welded steel plate, each side of the weld length of 5 times the diameter of reinforcement, welding seam should be welded into a convex arc that is.
Q:Why do I use the M25 round bar for the embedded bolt M24?
Because M25 round steel machine processing, the direct use of M24 round steel accuracy is not guaranteed
Q:How about tempering No. 45 round bar?
During quenching and tempering, the whole section of the workpiece is quenched and the microstructure of the workpiece is obtained with fine acicular quenched martensite. By tempering at high temperature, the microstructure with uniform tempered bainite is obtained. It is impossible for a small factory to do metallographic analysis of each furnace. It is generally used only for hardness testing. That is to say, the hardness of the quenched material must be reached by the quenching hardness of the material, and the hardness after tempering shall be checked according to the requirements of the drawing.
Q:Is round steel bar round steel?
Yes.From the shape of points for the light round steel, crescent steel, rebar.From the strength of reinforcement is divided into one level (235), two (335), three (435), four (435)Cold drawn from the production process (first tensioning and long pull method), cold and so on

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