Custom Self Drilling Anchor System Manufacturer in China
We manufacture specialized Self Drilling Anchor (SDA) Systems in China, offering solutions for complex geotechnical and construction needs. We provide custom-built SDA bars, components, and accessories with precision engineering. Our systems ensure rapid, single-pass installation for ground support in mining, tunneling, and slope stabilization projects. We supply reliable, durable anchoring products for challenging ground conditions worldwide.
Sinodrills - Your Trusted Self Drilling Anchor System Manufacturer from China
We are Sinodrills, a leading manufacturer of Self Drilling Anchor (SDA) Systems from China, dedicated to advanced anchoring solutions. We supply a comprehensive range of R-thread and T-thread SDA products for tunneling, mining, and civil engineering. Our systems combine drilling, grouting, and anchoring into a single, efficient process, ensuring superior stability and 100% load test qualification. We offer reliable, customized systems exported globally.
Self Drilling Anchor System Benefits
Integrated Drilling and Grouting: Combines three steps into one simple process. This reduces installation time and requires less equipment, boosting construction productivity.
Superior Performance in Poor Ground: Stabilizes loose soils without temporary casing. Continuous grout injection secures the borehole and ensures optimal load transfer and a stronger bond.
Flexibility and Versatility: The fully-threaded bar allows the anchor to be cut or extended. This makes the system highly adaptable for use in confined spaces and diverse stabilization projects.
Enhanced Safety and Cost Efficiency: Simplifying installation improves overall site safety. Faster operation cuts down on labor costs and shortens project schedules, providing economic value.
Self Drilling Anchor System Applications
Tunneling and Underground Excavation: We supply SDAs for immediate rock reinforcement of tunnel faces. They provide pre-support and stability in loose ground.
Slope and Embankment Stabilization: We offer SDA systems for soil nailing to reinforce unstable slopes. This prevents landslides and ground movement.
Foundation Underpinning and Micropiles: We provide anchors used as micropiles to strengthen existing foundations. This supports structures in areas with weak soils.
Retaining Walls and Earth Retention: We supply anchors for securely tying back retaining walls. This resists lateral pressures from the soil.
Mining Operations: We manufacture systems for ground support in underground mines. They are critical for roof and rib bolting for immediate safety.
Various Self Drilling Anchor System
R-Thread Self Drilling Anchor System
We offer the R-Thread Self Drilling Anchor System, featuring a continuous, rope-like thread profile that meets ISO 10208 and ISO 1720 standards. This robust design allows for easier coupling and extension, providing superior self-cleaning capabilities during drilling. It is an ideal, versatile solution for light to moderate loads in soil nailing, slope stabilization, and general ground support applications globally.
T-Thread Self Drilling Anchor System
We supply the T-Thread Self Drilling Anchor System, characterized by a robust, deep trapezoidal thread profile conforming to T International Standards. This design maximizes the bonding area with grout, offering significantly higher pull-out resistance and load-bearing capacity. It is primarily used for demanding applications like micropiles, deep foundations, and heavy structural underpinning in challenging ground conditions.
Standard Steel Self Drilling Anchor System
We manufacture the Standard Steel Self Drilling Anchor System for general geotechnical work in non-aggressive environments. This carbon steel hollow bar system combines drilling and grouting in a single operation, accelerating project timelines substantially. It is the most cost-effective choice for temporary support, tunnel pre-support, and general rock bolting in stable ground formations where extreme corrosion resistance is not a primary requirement.
GFRP Self Drilling Anchor System
We provide the Glass Fiber Reinforced Polymer (GFRP) Self Drilling Anchor System, offering non-metallic, high-strength reinforcement. We manufacture this system from composite materials that are fully resistant to chemical and electrochemical corrosion, perfect for aggressive ground or coastal sites. We offer this system for temporary support in tunneling, where it can be easily cut through by subsequent excavation activities.
Duplex Coating Self Drilling Anchor System
We offer the Duplex Coating Self Drilling Anchor System, providing a superior, dual-layer corrosion protection solution. This robust system combines hot-dip galvanizing with an external epoxy powder coating. This combination significantly extends the anchor’s service life, making it ideal for permanent support in highly corrosive environments. We supply this product for demanding hydro-projects, coastal structures, and infrastructure needing long-term durability.
Stainless Steel Self Drilling Anchor System
We supply the Stainless Steel Self Drilling Anchor System using AISI 316 or 2205 steel. This premium material provides unmatched resistance to chloride-induced corrosion and harsh chemical environments. We manufacture this solution for critical, permanent structures, including wind turbine bases and marine applications. This system ensures decades of reliable performance, minimizing maintenance and maximizing the structural integrity of your overall project.
Customize Your Desired Self Drilling Anchor System
Thread Profile
We customize the thread profile, offering both R-thread (rope) and T-thread (trapezoidal) SDA systems, or hybrid options. The choice depends on the required bond strength, load capacity, and the ground type you encounter. We manufacture threads to ensure the best possible grout-to-ground load transfer and optimal self-cleaning action during the drilling and grouting phases.
Material and Corrosion Protection
We tailor the material and protective coatings to combat environmental aggressions like corrosive soil or high salinity. We offer standard steel, duplex-coated (galvanized and epoxy), and stainless steel (316L, 2205) SDA bars. This crucial customization ensures the necessary service life and structural resilience for both temporary and permanent applications.
Anchor Bar Diameter and Length
We adjust the diameter and length of the SDA bar to suit the specific load requirements and drilling depth of your site. Larger diameters increase load capacity, while custom lengths minimize waste and on-site coupling time. We provide precise bar specifications to match your drilling rig’s capability and the required geotechnical stability calculations.
Drill Bit Design
We customize the drill bit design to maximize penetration rate and efficiency across different ground conditions, from loose sand and gravel to hard rock and fractured ground. We supply various types, including clay, cross, and button bits. Matching the drill bit ensures an efficient single-pass installation and optimizes the grout-mixing chamber formation in the borehole.
what is self drilling anchor system?
The Self Drilling Anchor System (SDA) is an innovative geotechnical solution that integrates drilling, grouting, and anchoring into a single, efficient operation. The system uses a hollow threaded bar with a sacrificial drill bit that simultaneously drills into the ground while grout is injected through its core.
We manufacture this system to provide immediate ground stabilization in challenging ground conditions like loose soil or fractured rock, eliminating the need for separate casing or pre-drilled holes.
what is self drilling anchor system used for?
The Self Drilling Anchor System (SDA) is an essential tool in modern civil and geotechnical engineering, specifically designed for use in unstable or complex ground conditions where conventional anchoring is difficult.
We supply SDA systems that simultaneously reinforce the surrounding ground while installing the anchor. This method is crucial for ensuring immediate and long-term stability across a diverse range of critical infrastructure projects.
Tunneling and Mining We supply SDA systems for ground pre-support and immediate rock bolting in newly excavated tunnel faces and mine openings. They are crucial for stabilizing fractured rock or loose soil, ensuring worker safety and preventing collapses. The system’s speed allows for quicker cycle times in underground development.
Slope Stabilization and Soil Nailing We offer SDAs for soil nailing applications to reinforce steep slopes and embankments susceptible to movement. The anchors create a stable composite block by connecting the soil mass to the ground. This system is highly effective in preventing landslides and maintaining the integrity of roadway and railway infrastructure.
Foundation Underpinning and Micropiling We manufacture SDA systems used as micropiles to reinforce existing foundations or provide deep foundation support for new structures in soft ground. The ability to install these anchors in confined spaces and through difficult layers makes them an invaluable solution for strengthening older buildings and bridges.
Earth Retention and Tie-Backs We provide anchors used as tie-backs for temporary and permanent earth retention structures, such as deep excavations or cofferdams. The anchors resist the lateral pressure exerted by retained soil, ensuring the stability of retaining walls and bulkheads during and after construction.
how to install self drilling anchor systems?
Installing a Self Drilling Anchor (SDA) System is highly efficient because it combines several geotechnical steps into one continuous operation. This method minimizes drilling time and ensures the borehole is immediately supported, especially in collapsing or weak ground. We have refined the process into key stages, ensuring accuracy, safety, and high performance for all our customers’ projects.
Equipment Setup and Pre-Assembly We start by mobilizing the appropriate drilling rig, grout pump, and mixer to the site. The sacrificial drill bit is securely attached to the first SDA hollow bar segment. We ensure the grout feed line is properly connected to the bar’s exposed end. This meticulous preparation is vital for maintaining continuous operation once drilling begins.
Simultaneous Drilling and Grouting The drill rig rotates and advances the SDA bar into the ground to the required depth. Simultaneously, we pump high-strength cementitious grout through the hollow bar. This crucial step serves to both flush out cuttings and immediately stabilize the borehole, guaranteeing the anchor is perfectly bonded and fully encapsulated within the soil or rock.
Anchor Extension (If Needed) For deep applications, the installation continues by coupling additional SDA bar segments using our threaded couplers. This process is seamless, maintaining the rotary advance and grout injection without interruption. This efficient coupling allows us to reach extreme depths while minimizing overall construction time and maintaining anchor continuity.
Head Installation and Tensioning Once the SDA reaches its design depth and the grout cures sufficiently, we install the bearing plate and securing nut onto the exposed end of the bar. The plate distributes the load onto the surface structure. We can then apply post-tensioning if the design requires an active anchor load, completing the permanent ground support system.
why choose our self drilling anchor systems?
Choosing our Self Drilling Anchor (SDA) Systems ensures you receive a superior, all-in-one ground support solution manufactured to rigorous international standards. We offer systems that drastically reduce installation time, enhance safety, and provide exceptional structural reliability in complex geotechnical environments .
We commit to supplying customized SDA products that guarantee optimal performance and cost-efficiency for your most demanding projects.
Unmatched Product Quality and Reliability We manufacture all SDA components, including bars, couplers, and bits, using precision engineering and materials that meet high standards. Our commitment to rigorous testing and quality control ensures that every anchor system provides the specified load capacity and structural integrity required. We supply systems you can trust for critical long-term applications.
Superior Corrosion Protection Options We offer a range of specialized corrosion protection, including Duplex coating (galvanizing plus epoxy) and high-grade stainless steel options. This customization allows us to match the SDA system to the specific environmental aggressivity of your site. We guarantee extended service life for your permanent anchors, minimizing future maintenance costs.
Optimized Installation Efficiency Our SDA system combines the drilling, grouting, and anchoring process into a single, seamless operation, which significantly accelerates project timelines. We supply specialized drill bits and couplers that maintain efficiency in varied ground conditions, reducing labor and equipment costs compared to traditional multi-step anchoring methods.
Customization and Technical Support We provide comprehensive customization, tailoring the thread type (R or T), diameter, and drill bit to your project’s needs. Our technical experts offer on-site support and consulting, helping you select and implement the most effective SDA solution. We ensure the system is perfectly matched to your geological challenges.
Send Your Inquiry Now
All-in-one Self Drilling Anchor System Solutions for Your Project
We provide comprehensive, Self Drilling Anchor System (SDA) solutions designed to simplify your ground support work. We manufacture the anchor bar, couplers, nuts, plates, and drill bits together, ensuring perfect compatibility and performance. We supply customized, complete packages that reduce procurement complexity and guarantee rapid, efficient installation and project reliability across all geotechnical applications.
