Maximum tensile force of self drilling anchor is up to 1950KN

Self drilling anchor bolt is a kind of prestressed anchor, which combines drilling, grouting and anchoring together; the maximum tensile force is up to 1950KN.
Self drilling anchor bolt - Most commonly used in tunnel building and reinforcement, these long bolts work to increase a structure's stability. With a unique physical appearance and three specific anchoring types, a SDA bolt is one of the most commonly used anchoring techniques around the world.
All Sinorock Self drilling Anchor utilise a small diameter greased filled high density polyethylene sheathing, allowing for a greater number of individual strands to be contained in a given drill hole size.
Sinorock's Self drilling Anchor consists of continuous thread anchor bar, coupler, drill bit, nut and plate. It can make drilling, grouting and anchoring simultaneously without using casing pipe and drill rod.It's capable of being used in weak surrounding rock, crumbly strata and loose soil.
Our SDA bolt is a fully threaded steel bar which can be drilled and grouted into loose or collapsing soils without a casing. The bar features a hollow center for simultaneous drilling and grouting and a rope thread for connection to standard drill tooling. SDA forms a standard rope thread profile (R25 - R51, T76 has a trapezoidal thread). SDA can be installed into a variety of different soils and ground conditions ranging from sand and gravel to inconsistent fill, boulders, rubble and weathered rock, as well as through footings and base slabs.

The Sinorock self drilling anchor system facilitates your work to a great extent, as it is capable of performing drilling, anchoring and injecting procedures all at once. The self drilling anchor system has a hollow interior, a threaded exterior and a drill bit that is used for drilling. The hollow interior of the self drilling anchor system allows air and water freely pass through the drilling process, flushing the particles. It also facilitates immediate injection following completion of the drilling process.
The self drilling anchor in Sinorock is an advanced anchor system which is composed of hollow anchor bar, nut, plate, coupler, drill bit and centralizer. If we want to be the most professional self drilling bolt manufacturer, we must do some innovation and reform on our products.