Piling Drill Bit
High-performance piling drill bits for foundation engineering, borehole excavation, and piling construction. Available in various diameters and tooth configurations.
Piling Drill Bit
Piling drill bits are heavy-duty cutting tools designed for borehole excavation in foundation engineering. They feature robust cutting teeth and spiral flight designs that efficiently break and remove soil, rock, and mixed formations. Engineered for maximum penetration rate and long service life in demanding piling conditions.
Our piling drill bits are manufactured from Q345B high-strength alloy steel with tungsten carbide cutting teeth and reinforced wear plates. They are widely used in building foundations, bridge construction, port terminals, and infrastructure projects across 60+ countries worldwide.
Technical Specifications
Standard Dimensions
| Parameter | Range | Unit |
|---|---|---|
| Outer Diameter | 200 – 2500 | mm |
| Flight Thickness | 16 – 40 | mm |
| Length | 1000 – 3000 | mm |
| Number of Flights | 2 – 6 | pcs |
| Tooth Height | 25 – 60 | mm |
* Custom sizes available for specific project requirements
Material Specifications
| Component | Material | Standard |
|---|---|---|
| Body | Q345B / Q355B | GB/T 1591 |
| Cutting Teeth | Tungsten Carbide | YG8/YG11 |
| Wear Plate | NM400 / NM500 | GB/T 24186 |
| Connection | API Thread / Pin-Box | API 5CT |
Performance Parameters
| Parameter | Value | Condition |
|---|---|---|
| Penetration Rate | 5 – 20 | m/h (soil) |
| Max Torque | 50 – 500 | kN·m |
| Working Depth | 0 – 80 | m |
| Service Life | 3000 – 8000 | m (cumulative) |
| Rock Strength | ≤ 150 | MPa |
Manufacturing Process
Our precision machined parts are manufactured through a 12-step CNC machining process from certified steel bars, including heat treatment, precision grinding, and rigorous QC to meet tight tolerances and demanding performance requirements.
Raw Material Receiving & Testing
Certified forged or hot-rolled round bars are received with EN 10204 3.1/3.2 certificates. Incoming inspection checks chemistry, hardness, UT cleanliness, and dimensional tolerance.
Sawing / CNC Cutting to Blanks
Bars are cut to blank lengths using CNC band saws or circular cold saws with ±0.5 mm length tolerance, minimizing material waste.
Rough Turning
Blanks are rough-turned on CNC lathes to remove scale, decarburization, and forging skin, leaving 1.5–2 mm stock per side for finishing operations.
Heat Treatment
Components undergo quenching and tempering (Q&T), carburizing, or induction hardening per specification to achieve case hardness (HRC 55–62) and core toughness.
Finish Turning & Boring
Precision CNC turning achieves OD/ID tolerances to IT6–IT7 with Ra 0.8–1.6 μm surface finish. Sleeve bushings are internally bored and honed to H7 tolerance.
Milling, Drilling & Keyway Cutting
Keyways, oil grooves, cross holes, and wrench flats are machined on CNC machining centers or using broaching/slotting machines.
Cylindrical & Surface Grinding
Critical diameters and sealing surfaces are precision ground to achieve Ra 0.2–0.4 μm and tight dimensional tolerances (≤0.01 mm).
Dynamic Balancing (Rotating Parts)
Shafts and rotating components are balanced on dynamic balancing machines to G2.5 or G6.3 grade to prevent vibration at operating speeds.
NDT (UT/MT/PT)
Critical components undergo ultrasonic testing for internal soundness and magnetic particle or dye penetrant testing to detect surface cracks.
Surface Treatment
Parts are blackened, zinc-plated, phosphated, or coated with anti-corrosion oil as required. Mating surfaces are protected with peelable coatings.
Dimensional & Hardness QC
100% dimensional inspection using micrometers, bore gauges, CMM; hardness testing (HRC/HRB/HV) on every batch; thread gauging for threaded connections.
Rust Prevention & Packaging
Parts are oiled with rust-preventive oil, wrapped in VCI anti-corrosion paper, packed in plywood cases with desiccant, and labeled per customer requirements.
Applications
Where our products deliver proven performance across industries worldwide.
Bored Pile Foundation Drilling
Rock and soil drilling bits for bored pile rigs construct building foundations, bridge piers, and diaphragm walls in all ground conditions.
✓ Diameters 600–3000 mm
Diaphragm Wall & Barrettes
Trench-cutting and barrette-pile tooling for deep basement and metro station construction in hard strata.
✓ Rock-socket capable designs
Mining & Shaft Sinking
Drill tooling for ventilation and service holes in mining shaft sinking, adapted to hard rock formations.
✓ Carbide-tooled designs
Water Well & Geothermal Drilling
Large-diameter water well and geothermal borehole tooling for medium-to-hard formations.
✓ API-thread connections
Microtunneling & Pilot Tunnels
Oversized cutting heads and pilot bits for microtunneling drives and pipe-jacking operations in mixed face conditions.
✓ Custom cutter layouts
Custom Tooling to Ground Conditions
Bits configured to your geotechnical report — cutter type, carbide grade, and layout selected per formation strength.
✓ Ground-condition matched
Frequently Asked Questions
What types of piling drill bits do you supply?＋
Rock augers, core barrels (mattock/roller cone), rock sockets, clean-out buckets, casing shoes, and pilot bits — in diameters 600–3000 mm.
How do I select the right bit for my ground conditions?＋
Provide the geotechnical report (UCS values, soil layering); we select cutter type — carbide teeth for soil/soft rock, roller cones or core barrels for hard rock.
What materials and cutting tools are used?＋
Forged alloy steel bodies (35CrMo/42CrMo) with YT/YG tungsten carbide teeth, roller cones, and hardened wear plates on high-wear surfaces.
What connections and rig compatibility do you support?＋
Kelly box connections (130–200 mm), API threads, and custom interfaces for Bauer, Soilmec, Casagrande, Mait, and other rigs.
Can you repair or re-tip worn bits?＋
Yes — re-tooth, re-tip, and rebuild services restore worn tooling at a fraction of replacement cost.
What is the typical lead time?＋
Standard designs 2–4 weeks; custom rock-tool configurations 4–8 weeks depending on diameter and cutter type.
What is the minimum order quantity?＋
From single pieces — tooling is quoted per item based on diameter, formation, and cutter configuration.
How is quality verified?＋
Body material certificates, carbide hardness checks, weld penetration inspection on cutter seats, and dimensional reports.
What documentation comes with my order?＋
Material certificates, welding and heat treatment records, and assembly drawings with cutter specifications.
Can you design tooling for a specific geotechnical profile?＋
Yes — send the borehole logs and UCS data; we configure cutters, spacing, and tooth geometry to the formation sequence.
Ready to Order Piling Drill Bits?
Get a competitive quote within 24 hours. Our engineering team provides expert consultation for your piling project needs.
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