Products Description
1.WHAT IS THE LEFT THREAD BOLT?
Left thread bolt is the most basic component of the roadway support in contemporary coal mines. It strengthens the surrounding rock of the roadway together so that the surrounding rock supports itself. Now the bolt is not only used in mines, but also in engineering technology, to strengthen the main body of the slope, tunnel and dam. As a tension member deep in the stratum, one end of the bolt is connected with the engineering structure, and the other end is deep in the stratum. The whole bolt is divided into free section and anchoring section. The free section refers to the area where the tension at the head of the bolt is transmitted to the anchor solid, and its function is to apply prestress to the bolt.
2.Main specification parameter
|
Diameter |
Yield strength (MPa) | Tensile strength (MPa) | Elongation (%) | Yield load (KN) | Tensile load (KN) | Kg/m |
|
φ16 |
345 | 510 | 25 | 69 | 100 | 1.6 |
|
φ18 |
345 | 510 | 25 | 87 | 126 | 2.0 |
|
φ20 |
345 | 510 | 25 | 108 | 156 | 2.5 |
|
φ22 |
345 | 510 | 25 | 131 | 189 | 3 |
3.Product advantages
- The anchoring end and fastening end do not need machining
- Full length equal strength, high material utilization rate
- Large anchoring force
- With prestressed gasket, easy to control the installation quality
- The installation speed is fast. It is a new type of rock bolt with material saving, labor saving. Mine rock bolt has broad application prospect
why choose us
Zhongfu is also a major exporter of these products to the Asia-Pacific Region. Zhongfu has successfully established its Mining Business Sector. Today, Zhongfu is market leader in the development, production and supply of mining products and systems. Zhongfu has over 250 employees with operations across Europe, Africa, Asia-Pacific and the Americas
01
High Quality
The main market of our products is the United States, and we set up a professional testing department. We will carry out sampling inspection before each shipment, and do not allow any products with poor quality to enter the market.
02
Advanced Equipment
Bolt production equipment has 1050 sets, with two large-scale production workshops and a professional warehouse, we guarantee you the fastest time to deliver to you, the construction period is stable.
03
Professional Team
Our production of bolt technology to obtain the Chinese patent, the group professional to create a one-stop service team from material selection to after-sales service for customers to better experience.
04
Custom Service
We have been engaged in foreign trade for ten years. Each country has its own different standards and shapes and different directions of threads. Therefore, our research and development department is updating itself every day.
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