High Quality Cold Rolled Steel φ18 φ20 φ22

Rebar Anchor Description

The raw material of equal-strength rebar anchor is 20MnSi steel, which is heat-treated. Its elongation is not less than 15%, yield strength is not less than 335MPa, and breaking strength is not less than 490MPa. the compressive capacity of anchor rods is between 20 tons and 50 tons. The straightness tolerance of anchor rods is less than 2mm/m for φ18 to φ22 rods and less than 4mm/m for φ16 rods.

The head bearing capacity of threaded steel anchor should be not less than 75% of the breaking force of the parent material of the rod. The threaded steel anchor is used in conjunction with a right-handed equal-strength resin anchor, and the nut is an integrated nut body of a cylindrical column at the bottom end and a hexagonal/square/runway-shaped column with a threaded through-hole in the center. The diameter of the nut increases gradually from the bottom to the top, which makes it easy to install and has reasonable force and high strength. The nut is made by molding process, which has anti-corrosion, beautiful appearance, and is easy to produce and has a long service life.

Technical Parameters

Rebar working principle

The working principle of equal-strength rebar-type resin anchors is the combination of metal rods and resin anchors. Firstly, the metal rod body is inserted into the hole which has been injected with anchoring agent according to the designed anchoring length. Then, through the stirring action, the anchoring agent begins to produce a chemical reaction and cures within a certain period of time, so that the metal rod body and the rock wall are bonded together.

After adding the protective net and load-bearing tray at the threaded end of the metal rod body, the nut is used to tighten it to achieve the purpose of support. The prestressed support thus formed can effectively control the stability of the coal rock roof, adapt to the movement of the peripheral rock, and reduce or eliminate the phenomenon of off-layer. The pre-stressing support and expansion system is composed of a variety of support forms and structures, which realizes mechanical installation and greatly improves the safety and reliability of the support.

The steps for installing and using equal-strength threaded steel type resin anchors are as follows:

1. Select suitable metal rod body and anchoring agent according to the design requirements.

2. Drill holes in the calibrated anchoring substrate, the diameter and depth of the holes need to match the specifications of the anchor rods.

3. After drilling, use pressurized air or water to remove floating dust in the hole and load anchoring agent.

4. Use the mixer tool to drive the metal rod body, while mixing and advancing to the bottom of the hole. The mixing time should be less than the gel time of the anchor fixative.

5. Avoid moving the rod body during the waiting time.

6. After the specified waiting time, the bearing tray can be installed and the nut tightened. When the load bearing time is reached, the tensile strength test can be performed.

Through the above steps, you can correctly install and use Equal Strength Threaded Steel Type Resin Anchor and ensure its performance and effectiveness. Please pay attention to safety during operation and follow relevant installation guidelines and standards.

Product Qualification