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DTH Hammer Drilling Overburden Symmetric Casing Bit Concentric Pilot Bit and Ring Bit with Casing Shoe1
Engineering Construction MachinerySymmetric Casing BitSymmetric Ring Bit
HENAN STAROCKDRILL EQUIPMENT CO., LTD
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Product DescriptionDTH Hammer Drilling Overburden Symmetric Casing Bit Concentric Pilot Bit and Ring Bit with Casing ShoeOur concentric casing system with ring bits represents the latest technology in overburden drilling equipment. This system is particularly suitable for work conditions with gravel and fractured layers, Symmetric Casing Bit offering outstanding performance and efficiency.Specification Features1.Stable and Reliable Performance: Our drilling tools feature a full cutting structure, enabling fast progress and precise holes.2.Versatile Operation: Compared to eccentric drilling, our tools require less torque, making them suitable for vertical, horizontal, or any directional operations.3.Minimized Hole Blockage: Our innovative design minimizes the likelihood of hole blockage, ensuring high debris removal efficiency. Unlocking and re-locking operations are also made easy.4.User-Friendly and Safe: Our drilling equipment is designed for ease of use and provides excellent safety performance, prioritizing the well-being of operators.Product IntroductionThe concentric casing system comes in two variations: the three-piece set and the two-piece set. The three-piece set comprises a central drill bit, a casing shoe, and an expansion drill bit. Meanwhile, the two-piece set consists of a concentric drill bit and an expansion sleeve (formed by compressing the expansion drill bit and casing shoe). By welding or thread connecting the casing shoe to the casing, the root canal gradually slides down as the down-the-hole hammer and central drill bit advance. This drilling tool allows construction at any angle, including horizontal, and can reach depths well beyond 100 meters. Drilling and casing are synchronized for seamless operations.Trusted by global drilling contractors and customers who looking for high quality drilling tools for their drilling rigs and rock drilling machines, we would be honored to have the opportunity to earn your trust and provide you with rock drilling products that meet your application needs.Application scenariosThe versatility of our Shank Adapter makes them widely applicable across various industries, including open-pit mining, underground mining, tunneling, anchoring projects, blast furnace tapping, tunnel construction, hydroelectric projects, quarrying, and various other construction projects.andling, land preparationTechnical Specifications(Custom configurations available upon request.)ModelCasing OD (MM)MAX Thickness(mm)Reamer(mm)Casing Shoe ID(mm)Through Bit diameter(mm)Hammer sizeDrill Rod(mm)SOD108108611885753 INCH HAMMER76SOD114114612890803 INCH HAMMER76SOD127127914197854 INCH HAMMER76SOD14014010154108954 INCH HAMMER76SOD168168101821381255 INCH HAMMER76/89SOD178178101921481355 INCH HAMMER76/89SOD183183101981521405 INCH HAMMER76/89SOD194194102101641486 INCH HAMMER89/114SOD219219102351841726 INCH HAMMER89/114SOD245245102612101928 INCH HAMMER114SOD273273103052382198 INCH HAMMER114SOD3233231034829426510 INCH HAMMER114SOD4064061243235833012 INCH HAMMER127Drawings & DimensionsDetailed CAD drawings and dimensional diagrams are available for download here or upon inquiry. Our engineering team can provide tailored designs to meet specific project requirements.Packaging & ShippingAfter Sales ServiceStandard Warranty: 12 months or 2,000 operating hours (whichever comes first).Extended Warranty: Optional coverage up to 36 months.Global Support: 24/7 technical assistance and spare parts supply.Training: On-site or remote operation/maintenance training.Company ProfileHENAN STAROCKDRILL EQUIPMENT CO., LTDWelcome to Starockdrill, a specialist manufacturer of rock drilling tools. Since our establishment in 2008, Henan Starockdrill Equipment Co., Ltd. has been committed to the research, development, and production of rock drilling tools. Our mission is to provide customers with high-quality, efficient, and reliable drilling tools and solutions, helping them enhance productivity, reduce costs, and create more value.Why Choose Us?Other ProductsOEM/ODM capabilitiesCompetitive pricing & bulk discountsFast shipping & customs clearance supportTurnkey project solutionsThreaded Drill RodsCoupling SleevesThreaded Drill BitsEccentric Casing SystemDouble Casing Drilling SystemCertificationsProject CaseFAQQ: What’s the lead time for orders?A: Standard models ship in 15–30 days; customized units require 30–45 days.Q: Do you provide after-sales service overseas?A: Yes, we have partnered service centers in key regions.Q: Can I request a customized bucket size?A: Absolutely! We offer tailored attachments.Q: What documents do you provide for export?A: Full export package (Commercial Invoice, Packing List, Bill of Lading, COC, etc.).Q: How do I place an order?A: Contact us via email/phone for a quote, then confirm with a PO.
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