Tiếng Việt
ភាសាខ្មែរIt is one of the materials widely used in machine manufacturing, but not everyone knows what a round bar is or what its characteristics are. The appearance of this type of steel has become the perfect alternative to fragile steel. Learn about the round bar now in the article below!
What is the round bar?
A round bar is an alloy steel containing about 0.42–0.50 carbon. It has good resistance, is less susceptible to corrosion or oxidation, and is highly elastic. These are big plus points that help round bars be widely used in the mechanical industry, manufacturing molds and machine parts such as bolts, gears, screws,…
Round bar is also known as round flat steel or plain round steel. This type of steel is dense, and the surface is smooth and shiny.
Current types of round bars
Due to high demand, the market currently has many types of plain round steel. However, it is still divided into two main types based on two criteria, including size and steel hook. Specifically:
By size: The round bar has a variety of sizes, ranging from types from Ø10 to Ø610 with lengths of 6m, 9m, and 12 m, respectively.
According to steel grade: S45C, S50C, S35C, S30C, S20C, SCM420, SCM440, SCR420,…
The production process of round bar
To create a round bar, we need to go through four stages, including:
– Ore processing: After ore is extracted from the ground, it will be processed and put into a furnace. After heating to a certain temperature, we will obtain a stream of molten metal.
– Creating a molten steel stream: From the initial metal stream, which continues to be led into the furnace, CO gas will escape, and the ore that remains will be molten steel. This steel will be filtered to become pure molten steel.
– Feed casting: When pure molten steel is obtained, it will be sent to the billet casting furnace. This step will create three types of embryos: bar embryos, session embryos, and bloom embryos.
– Billet rolling: This is the step to creating solid, flexible, brightly colored round steel bars.
– Galvanizing: With galvanized round bar steel, this is the step of using NOF technology to plate a layer of zinc on the surface of the steel bar. This step helps increase corrosion resistance and preserve the inner steel core.
Advantages and disadvantages of a round bar
As mentioned, a round bar is considered an excellent alternative to old steel lines. It is not natural that it is so highly appreciated. Let’s take a look at the pluses and minuses of clear, solid steel!
Advantage
- Steel is flexible, malleable, and easy to process to the required size.
- Steel is relatively small and light, so it is easy to transport and manufacture.
- Diverse in size, suitable for many applications
- The surface is smooth and shiny, so it is highly aesthetic.
Disadvantages
- Steel has a short lifespan because it is only covered with a thin layer of electroplating on the outside.
- May deform when exposed to high temperatures.
- Because the intestines are dense, it takes time to process.
- With zinc-dipped steel, the price is quite high.
Application of steel
Currently, round bars are used in many industries, with roles such as:
- Create molds such as rice husk molds, plastic molds, shape molds, etc.
- Create cutting and grinding tools such as saw blades, shaped rollers, etc.
- Manufacturing bolts for telecommunications receiving and broadcasting stations
- Create materials such as bolts, screws, rivets, etc.
Weight table – Specifications of round bar
Understanding the specifications of round bar steel helps you easily choose the type of steel that suits your needs. From there, help the project be durable, stable, and have a long lifespan. The finished products ensure quality and, at the same time, save on costs.
| NO. | SPECIFICATIONS | WEIGH | NO. | SPECIFICATIONS | WEIGH |
| mm | kg/m | mm | kg/m | ||
| 1 | Round bar D6 | 0.22 | 37 | Round bar D155 | 148.12 |
| 2 | Round bar đặc D8 | 0.39 | 38 | Round bar D160 | 157.83 |
| 3 | Round bar D10 | 0.62 | 39 | Round bar D170 | 178.18 |
| 4 | Round bar D12 | 0.89 | 40 | Round bar D180 | 199.76 |
| 5 | Round bar D14 | 1.21 | 41 | Round bar D190 | 222.57 |
| 6 | Round bar D16 | 1.58 | 42 | Round bar D200 | 246.62 |
| 7 | Round bar D18 | 2.00 | 43 | Round bar D210 | 271.89 |
| 8 | Round bar D20 | 2.47 | 44 | Round bar D220 | 298.40 |
| 9 | Round bar D22 | 2.98 | 45 | Round bar D230 | 326.15 |
| 10 | Round bar D24 | 3.55 | 46 | Round bar D240 | 355.13 |
| 11 | Round bar D25 | 4.17 | 47 | Round bar D250 | 385.34 |
| 12 | Round bar D26 | 4.83 | 48 | Round bar D260 | 416.78 |
| 13 | Round bar D28 | 5.55 | 49 | Round bar D270 | 449.46 |
| 14 | Round bar D30 | 6.31 | 50 | Round bar D280 | 483.37 |
| 15 | Round bar D32 | 7.13 | 51 | Round bar D290 | 518.51 |
| 16 | Round bar D34 | 7.55 | 52 | Round bar D300 | 554.89 |
| 17 | Round bar D35 | 7.99 | 53 | Round bar D310 | 592.49 |
| 18 | Round bar D36 | 8.90 | 54 | Round bar D320 | 631.34 |
| 19 | Round bar D38 | 9.86 | 55 | Round bar D330 | 671.41 |
| 20 | Round bar D40 | 10.88 | 56 | Round bar D340 | 712.72 |
| 21 | Round bar D42 | 11.94 | 57 | Round bar D350 | 755.26 |
| 22 | Round bar D44 | 12.48 | 58 | Round bar D360 | 799.03 |
| 23 | Round bar D45 | 13.05 | 59 | Round bar D370 | 844.04 |
| 24 | Round bar D46 | 14.21 | 60 | Round bar D380 | 890.28 |
| 25 | Round bar D48 | 15.41 | 61 | Round bar D390 | 937.76 |
| 26 | Round bar D50 | 16.67 | 62 | Round bar D400 | 986.46 |
| 27 | Round bar D52 | 18.65 | 63 | Round bar D410 | 1.036.40 |
| 28 | Round bar D55 | 22.20 | 64 | Round bar D420 | 1.087.57 |
| 29 | Round bar D60 | 26.05 | 65 | Round bar D420 | 1.139.968 |
| 30 | Round bar D65 | 30.21 | 66 | Round bar D430 | 1.248.49 |
| 31 | Round bar D70 | 34.68 | 67 | Round bar D450 | 1.276.39 |
| 32 | Round bar D75 | 39.46 | 68 | Round bar D455 | 1.420.51 |
| 33 | Round bar D80 | 44.54 | 69 | Round bar D480 | 1.541.35 |
| 34 | Round bar D85 | 49.94 | 70 | Round bar D500 | 1.667.12 |
| 35 | Round bar D90 | 55.64 | 71 | Round bar D520 | 1.865.03 |
| 36 | Round bar D95 | – | 72 | Round bar D550 | 2.074.04 |
See more: Table of technical specifications for steel pipes of all types
Where can I buy quality round bars?
When the market has many round bar suppliers, customers are confused because they are faced with many options. The question of where to buy a reputable round bar will be raised. This takes a lot of time and affects work progress.
If you don’t know where to buy this material from, why not immediately contact Bao Tin Steel Company Limited? This is one of the leading companies distributing steel pipes in Vietnam.
With more than 10 years of experience, Bao Tin Steel is confident in always bringing quality products to the market from reputable manufacturers. The products here all have clear origins, complete information, and documents. This is the reason why customers always appreciate products purchased at Bao Tin Steel.
In addition, the company also owns a team of highly specialized, experienced, and dedicated staff. Customers are always supported and updated with the latest information in the industry. This is the factor that brings satisfaction and trust to customers.
Above is information about the round bar. Hopefully, the sharing of Bao Tin Steel will help you gain more knowledge. If you want to receive a quote or place an order, don’t hesitate to call us now!