Round steel is a kind of hollow cylindrical metal material, which is widely used in construction, machinery manufacturing, automobile manufacturing, energy, transportation and other industries.
Round steel is mainly made of carbon steel, alloy steel and tool steel.
Among them, carbon steel round steel refers to steel with carbon content within the range of 0.20% to 0.55%.
Carbon steel round steel is an economical and practical structural material with good weldability, plasticity and machinability.
Alloy steel round steel refers to the steel with a certain amount of alloying elements (chromium, manganese, cobalt, boron, molybdenum, vanadium, etc.), which can obtain higher strength, hardness, corrosion resistance and wear resistance.
Tool steel Round steel is a kind of high-speed tool steel material, which has the advantages of high hardness, high red hardness and wear resistance.
The production process of round steel is very diverse, including hot rolling, cold drawing and cold drawing.
Among them, the hot rolling production process refers to the steel material heated to a certain temperature, plastic deformation through rolling machinery and equipment, pressed into different specifications of the shape of steel.
The cold drawing process is the use of steel wire material for cold drawing, which can obtain a higher surface finish for the production of precision parts.
Cold drawing process is to draw steel in cold storage to obtain higher density, hardness and strength.
The wide application of round steel lies in its material characteristics and production process, which can meet the needs of different industries.
In construction projects, round steel is mainly used to build steel structure houses, large factories, Bridges, oil drilling platforms and oil mining equipment.
In the machinery manufacturing industry, round steel is mainly used to process gears, bearings, connecting rods, pins, shafts and other parts.
In the automobile manufacturing industry, round steel is mainly used to make auto parts, frames, suspension systems, guiding mechanisms and so on.
It is also widely used in energy, transportation and other industries.
1).Composition:
| C |
Si |
Mn |
Cr |
Mo |
P |
S |
| 0.38-0.43 |
0.15-0.35 |
0.75-1.00 |
0.8-1.10 |
0.15-0.25 |
<0.035 |
<0.04 |
2). Equivalent Grades :
| GB |
DIN |
ASTM |
JIS |
BS |
NF |
| 42CrMo |
1.7225 |
4140 |
SCM440 |
708M40 |
42CD4 |
3). Diameters:6mm-400mm
Length:3.5m-9m or as required
4). Smelting Process:
EAF+LF+VD
Note:EAF=Electric Arc Furnace; LF=Ladle Furnace; VD=Vacuum Degassing;
5). Properties of 4140 alloy steel:
Special alloy steel, engineering steel supplied in quenched and tempered conditions. Very good machinability. High toughness, creep strength, repeated impact resistance.
6). Application of 4140 alloy steel:
Components with high requirements on toughness, e.g. gear wheels, pinions, connecting rods, parts for mechanical engineering
Details and Packing Images
Packaging & Shipping
Company Profile
Liaocheng Huajian Steel Co.,Ltd is located in Liaocheng, Shandong Province, which is known as "the Water City of Jiangbei", and our company was established in the year 2012. We are a modern private enterprises which are specialized in processing and exporting steel materials in China and win high reputations from our customers.
Our main items are:
1. Steel plate, steel sheet, wear resistance steel plate, high strength steel plate, HRC MS plate, checkered steel plate, alloy steel plate /coil etc..
2. Cold rolled steel coil/sheet,galvanized steel coil/sheet, galvalume steel coil/ sheet, prepainted steel coil/ sheet,corrugated roofing steel sheet
3. steel profiles, such as, steel angle section, H beams, I beams, Channel section etc..
4. Carbon steel pipe, seamless steel pipe, welded steel pipe,spiral welded pipe, galvanized steel round and square tubes, and stainless steel etc
(1): High quality with reasonable price.
(2): Wide excellent experiences with after-sale service.
(3): Every process will be checked by responsible QC which insures every product's quality.
(4): Professional packing teams which keep every packing safely.
(5): Trial order can be done in one week.
(6): Free Samples can be provided as your requirements.
1. Minimum Order Quantity?
The MOQ is usually 25 tons or more, it depends .
2. What kind of terms of payment can you accept?
T/T, L/C are available.
3. What grams of the product can you offer?
These products can be customized according to your requirement.
4.Is free sample available?
Yes, free sample is available.
The sample is cost free, but please afford the freight cost, and we will figure it in the order as long as we work together.For those clients who have already established business relation with us, even the freight cost will be free.
5. Can you do Customization & Reproduction if I provide a photo?
Yes, we do Customization & Reproduction service.
6. Does the packaging safe and arrive in good conditions?
Yes, safe Packing guarantee , all the products will arrive your door under good conditions. We response to problem of shipping if there unfortunately is.
7. How long does it usually take to deliver the product?
We will make the shipment to you immediately. It will take about 10 to 40 days arrive worldwide. It de pends on the specific quantity.
8. Is drop shipping available?
Yes, it is, we can send to worldwide.
If you have any questions about our products or our company, please don't hesitate to contact us, we will try our best to serve you well!
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