What does channel steel 20a mean?
In the fields of construction, machine manufacturing and engineering, channel steel is a common profile that is widely used for supporting and connecting various structures. The model number of channel steel usually consists of numbers and letters, such as "20a", and many people are confused by this naming method. This article will explain in detail the meaning of "channel steel 20a" and provide you with a comprehensive interpretation based on hot topics in the past 10 days.
1. Basic definition of channel steel 20a
The "20" in channel steel 20a means that the height of the channel steel is 20 centimeters, and the letter "a" means that its waist thickness and leg width specifications belong to the A series. Channel steel models are usually divided into three series: A, B, and C. The A series has a thinner waist and narrower leg width, and is suitable for light-load structures.
| Model | Height (mm) | Waist thickness (mm) | Leg width (mm) |
|---|---|---|---|
| 20a | 200 | 7 | 73 |
| 20b | 200 | 9 | 75 |
| 20c | 200 | 11 | 77 |
2. Application scenarios of channel steel 20a
Channel steel 20a is often used in the following scenarios because of its light weight and moderate strength:
1.building structure: Used for beams, columns and other support components of light steel structures.
2.Machinery manufacturing: Tracks used as equipment frames or conveyors.
3.bridge engineering: Used for temporary supports or auxiliary structures.
3. The relationship between hot topics in the past 10 days and the channel steel industry
Recently, the channel steel industry has been closely related to many hot topics. The following are some hot topics:
| hot topics | Related content | heat index |
|---|---|---|
| green building | Application of channel steel in prefabricated buildings | high |
| Steel price fluctuations | Market price trend of channel steel 20a | in |
| Smart manufacturing | Automated channel steel cutting technology | high |
4. Market analysis of channel steel 20a
According to recent market data, the price of channel steel 20a is greatly affected by the cost and demand of steel raw materials. The following are price changes in the past 10 days:
| Date | Price (yuan/ton) | Increase or decrease |
|---|---|---|
| 2023-10-01 | 4200 | +1.2% |
| 2023-10-05 | 4150 | -0.8% |
| 2023-10-10 | 4180 | +0.7% |
5. How to choose channel steel 20a
When purchasing channel steel 20a, you should pay attention to the following points:
1.Material: Confirm whether it is a commonly used material such as Q235B or Q345B.
2.Dimensional accuracy: Check whether the height, waist thickness and leg width meet the standards.
3.surface quality: Avoid choosing products with obvious rust or cracks.
6. Summary
Channel steel 20a is an A-series channel steel with a height of 20 cm and a thin waist thickness. It is widely used in construction and machinery manufacturing fields. Recently, hot topics such as green building and intelligent manufacturing have further promoted the development of the channel steel industry. When purchasing, pay attention to the material, size and surface quality to ensure that it performs as required.
check the details
check the details
en
