Self-Drilling Anchor (SDA) Rod Self-Drilling Anchor (SDA) Rod with a 32 mm, 38mm, 25 mm and all access in available at Sonu Hose Pipe outer diameter, commonly referred to as an R32 system, is widely utilized in geotechnical engineering for applications such as slope stabilization, tunneling, and foundation support.​ Key Specifications of R32 SDA Rods: Outer Diameter: 32 mm​ Inner Diameter: Varies based on the specific model; for instance:​ R32N-21: 21.0 mm​ 0b3407fe4fc4127e.en.made-in-china.com +6 sinodrills.com.cn +6 Alibaba +6 R32N-18.5: 18.5 mm​ Contentful Assets +10 sinodrills.com.cn +10 crowdersupply.com +10 R32S-17.5: 17.5 mm​ sinodrills.com.cn Sectional Area: Ranges from 350 mm² to 520 mm², depending on the model.​ sinodrills.com.cn Ultimate Load Capacity: Between 210 kN to 405 kN.​ Yield Load Capacity: From 160 kN to 350 kN.​ sinodrills.com.cn +1 Contentful Assets +1 Elongation at Break: Typically greater than 6% to 10%.​ sinodrills.com.cn Weight: Approximately 2.80 kg/m to 4.10 kg/m.​ sinodrills.com.cn Components of the R32 SDA System: Hollow Anchor Rod: Serves as both the drill rod and grouting conduit.​ Drill Bit: Attached to the rod's end, allowing for simultaneous drilling and installation.​ Couplers: Used to extend the rod length by connecting multiple sections.​ Nuts and Plates: Secure the anchor and transfer loads to the surrounding structure.​ Advantages: Efficiency: Combines drilling, grouting, and anchoring in a single operation, reducing installation time.​ Versatility: Suitable for various ground conditions, including loose soils and fractured rock.​ High Load Capacity: Designed to bear significant loads, ensuring structural stability.