Rock bolts are commonly used in civil engineering and mining to reinforce and stabilize
rock masses. A rod or bar is inserted into a drilled hole, which is then grouted in place using
cement or resin. FRP Rock bolts withstand tensile forces and evenly distribute load,
eventually increasing overall strength. They control rock movements, reduce deformation
and prevent collapses.
We provide rock bolts friction stabilizers and thread bars We have hundreds of professional processing equipment We have more than ten independent production lines The annual production capacity is millionsÂ
Our anchor system contains Hollow bar Drill bit Coupling Nut Plate Centralizer and Plug The hollow bars ranging from R20 to R50 T30 to T200 We also can tailor make on your requirements
Anti-corrosion Mechanism
Duplex coating is a combination of hot-dip galvanizing and epoxy coating. Firstly, product is hot-dip galvanized, and then epoxy powder is sprayed on the surface. The anchor bolt has better anti-corrosion performance and longer service life after two kinds of anti-corrosion processes. It can not only resist ordinary chemical corrosion, but also work in acidic environment and electrochemical corrosion with stray currents.
Product Standard
Duplex coating combines all the performance parameters of hot-dip galvanizing and epoxy coating. Hot-dip galvanizing meets the requirements of the table below. Epoxy products are mainly based on EN 13438 Paints and varnishes - Powder organic coatings for hot dip galvanized or sherardized steel products for construction purposes, with a minimum coating thickness of 60um. Bending performance of epoxy coating complies with ISO 1519 Paints and varnishes - Bend test (cylindrical mandrel). Impact performance meets ASTM D2794 Standard Test Method for Resistance of Organic Coatings to the Effects of Rapid Deformation (Impact). Adhesion conforms to ISO 2409 Paints and varnishes -Cross-cut test.
Featurs and Advantages
Excellent anti-corrosion properties: As zinc is an active metal, after coating surface is damaged, it will protect the steel by battery effect.
Long service life: Zinc layer is consumed very slowly in the atmosphere, so its service life far exceeds that of any other coatings.
Full protection: As immersed into hot-dip galvanizing bath�¯�¼?products are fully protected and anti-corrosion effect is better.
Lower price: In most cases, the hot-dip galvanizing cost is lower. Zinc coating is more durable than others, and does not require maintenance in the future.
High processing efficiency: Hot-dip galvanizing bath is simple and efficiency is higher than other coatings.
After curing, the coating material will not melt even if it is heated again. It has high chemical stability. The formed coating has high adhesion to metal, low drying shrinkage and high ductility. In the case of the coating is not damaged during operation, it can effectively block corrosive substances.
Service Life
The service life of duplex coating anchor bolt is usually much longer than single anti-corrosion treatment, which is a synergistic effect. In most environments, the service life of duplex coating anchor bolt can reach 100 years without maintenance; the first maintenance service life of duplex coating anchor bolt in a severely corrosive environment is nearly double that of hot-dip galvanizing anchor bolt.
Application
Duplex coating anchor bolt is generally used in the permanent support of hydro-projects, underwater tunnels, subway tunnels and some important buildings affected by groundwater for a long time. And it is also widely used in harbors, wharfs, offshore buildings which are corroded by seawater.
Rock bolt is the most basic part of roadway support in contemporary coal mines, it reinforced the surrounding rock of the roadway, make the surrounding rock support itself.
Material: MG335/400/500/600
Size: diameter 18,20,22 mm
Price: discussable and based on the quantity of your enquiry
This is left-handed rock bolt, if you want konw more about the rock bolt,
Model: threaded bolt
Specification: 18*2m, 16*6m (customize according to customer requirement)
Material: 16Mn, 20Mnsi
Characteristic:
1. The anchorage end and the fastening end do not require machining;
2. The strength is equal all the length, high material utilization;
3. Strong anchoring force;
4. Equipped with prestressed gasket, easy to control installation quality;
5. The installation speed is fast, it is a new type of anchor rod, which is a kind of material that save material and work, equal strength, and the left screw steel bolt has a wide application prospect.
If you are intrested in our produce,please visit our website
Model: left hand rock bolt
Specification: 18*2m, 16*6m (customize according to customer requirement)
Material: 16Mn 20 Mnsi
Characteristic:
1. The anchorage end and the fastening end do not require machining;
2. The strength is equal all the length, high material utilization;
3. Strong anchoring force;
4. Equipped with prestressed gasket, easy to control installation quality;
5. The installation speed is fast, it is a new type of anchor rod, which is a kind of material that save material and work, equal strength, and the left screw steel bolt has a wide application prospect.
If you are intrested in our products please visit our website
