Self Drilling Anchor Bolt Systems
SIGRICARE is a premier manufacturer and exporter of Self Drilling Anchor (SDA) Bolt Systems, hollow bar anchors, and high-performance geotechnical rock reinforcement solutions.
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Self Drilling Anchor Bars & Rock Bolts
High-yield hollow steel anchor bars with continuous rope thread profiles (R25, R32, R38, R51, T76) for self-drilling borehole reinforcement.
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Hollow Anchor Bolts
Hollow core anchor bolts for efficient simultaneous drilling and grouting in soft soil, crushed rock, and fractured strata.
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CTA & SDA Rods
Fully threaded high-tensile rock anchor rods, composite threaded anchors (CTA), and continuous-thread SDA rods.
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Anchor Couplers
High-strength internal threaded couplers engineered to transmit 100% of the bar ultimate tensile load and percussion energy.
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Anchor Nuts & Bearing Plates
Heavy-duty spherical hexagonal anchor nuts, beveled washers, and structural domed bearing plates for uniform load distribution.
Self Drilling Anchor Bolt Systems
6m Self Drilling Hollow Anchor Bolt
6-meter single piece hollow anchor bars for deep pre-support spiling in high-speed tunnel construction, minimizing coupler usage and speeding up installation cycles.
Self Drilling Anchor Bolt Systems
Alloy Steel Hollow Anchor Bolt
Engineered hollow core anchor bolt with optimized wall thickness to provide maximum section modulus and bending resistance in squeezing rock masses.
Self Drilling Anchor Bolt Systems
SDA Rods (Self Drilling Anchor Rods)
Continuous-thread hollow SDA rods manufactured in high-yield alloy steel. Designed for simultaneous drilling, flushing, and pressure grouting across complex fractured geological formations.
Self Drilling Anchor Bolt Systems
CTA Rods (Composite Threaded Anchors)
CTA Rods manufactured from high-tensile structural alloy steel featuring full-length external rope threading for continuous coupling and custom on-site length adjustment.
Self Drilling Anchor Bolt Systems
Fully Threaded Rods
High-tensile fully threaded steel rods engineered for heavy tieback anchorages, soil nailed slope walls, and structural micropiles.
Self Drilling Anchor Bolt Systems
Self Drilling Anchor Bolt Coupler
Heavy-duty internal threaded couplers designed to join two hollow anchor bars. Features internal center stop to ensure 50-50 thread engagement and unobstructed central grout flow.
Self Drilling Anchor Bolt Systems
Stainless Steel Hexagonal Anchor Nuts
Heavy-duty spherical hexagonal anchor nuts manufactured from stainless steel or high-tensile alloy steel. Designed to mate with domed bearing plates for uniform rock tendon pre-stressing.
OVERVIEW: Self Drilling Anchor Bolt Systems
SIGRICARE Self Drilling Anchor Bolt Systems are engineered for demanding geotechnical applications where borehole collapse is prevalent. By combining drilling, hollow bar placement, and pressure grouting into a single continuous pass, our SDA systems maximize installation efficiency, ground bonding, and structural safety across tunnel portals, mining shafts, slope stabilization, and foundation micro-piles.