- darren@lilingroup.com
- +86-138-0317-7810
As an integrated drill bit manufacturer and exporter in China, Lilin supplies API-standard tricone drill bits, PDC drill bits, roller cone bits, and other drilling tools for oil and gas, water well, mining, geothermal, HDD, and construction applications. Our factory-direct manufacturing capabilities support standard and customized drill bit solutions for drilling contractors, distributors, and international buyers.
We manufacture API-standard tricone and PDC drill bits with controlled machining, assembly, inspection, and quality procedures for demanding drilling applications.
Our drill bits are engineered for different formation conditions, with optimized cutting structures, carbide inserts, PDC cutters, hydraulics, and gauge protection to support reliable ROP and bit life.
We provide custom drill bit manufacturing based on diameter, IADC classification, cutting structure, formation characteristics, connection, and drilling application. OEM production is available for distributors and drilling contractors.
Established in 1984, Lilin Machinery Group operates over 573,000 m² of manufacturing facilities as a leading API 7-1 rock roller bit manufacturer and downhole tool supplier. Serving oil, gas, geothermal, and HDD trenchless projects worldwide, we deliver customized drilling tools engineered for demanding geological formations.
As a strategic supplier to CNPC and Sinopec, we combine advanced metallurgy with strict API Spec Q1 quality control to ensure exceptional field reliability and high ROP.
Certified by API and ISO, our high ROP PDC matrix bits and TCI tricone bits undergo rigorous non-destructive testing for extended downhole lifespan.
With over 12,000 downhole motors produced annually, our HDD hole openers and rock bits are trusted by drilling contractors across 20+ countries.
Backed by 40+ years of API 7-1 certified manufacturing, we supply custom tricone rock bits and high ROP PDC matrix bits for challenging oilfield, geothermal, and HDD trenchless projects.
Backed by API Spec 7-1 and ISO 9001 certifications, Lilin Group provides premium tricone rock bits, steel tooth bits, PDC drill bits, and downhole motors customized for tough rock formations and demanding drilling environments.
Available in standard 11 5/8" size, this tricone drill bit supports customizable tooth structure and gauge protection, widely used for oil well, water well and geothermal drilling projects.
12 1/4‑inch roller cone bit with complete size options. Milled‑tooth design, stable performance for soft‑medium rock formation drilling.
12 1/4" PDC drill bit, matrix & steel body optional. Adjustable cutter layout & nozzle size for different down‑hole drilling conditions.
12 1/4‑inch rock reamer hole opener, multiple diameter sizes available. Heavy‑duty structure for directional horizontal drilling.
26‑inch drilling motor, meets API 7‑1 standard. Multiple size specifications, high torque for directional well drilling operations.
8 1/2" PDC bit, support custom bit size, nozzle layout and cutter configuration to match your drilling rock conditions.
From high-grade alloy forging to automated tungsten carbide insertion, every tricone and PDC bit undergoes 100% NDT inspection to eliminate downhole risks and extend bit operating lifespan.
Forged steel cones and premium tungsten carbide inserts built for maximum wear resistance and lower dull grading scores.
Ultrasonic, magnetic particle, and pressure testing ensure zero structural defects downhole.
Tailored cutter arrangements and jet fluid dynamics engineered for optimal hydraulic flushing and cooling.
Sealed wooden crate packaging prevents thread damage and corrosion during international transit.
Engineered to deliver faster penetration rates (ROP) and reduced maintenance down-time in abrasive rock, geothermal wells, and HDD projects.
Explore our full series of API 7-1 certified TCI tricone bits, steel tooth roller bits, and matrix PDC cutter bits engineered to deliver high ROP across oil, geothermal, water well, and HDD drilling applications.
Whether you need expert IADC selection for tough rock formations, operating parameters for field use, or a factory-direct quote, our technical engineering team is here to help.
Practical guides on IADC bit selection, PDC cutter maintenance, and high ROP optimization tips for rock drilling engineers.
Equipped with high-precision CNC machining centers, automated thermal treatment lines, and specialized drill bit testing labs, Lilin Group handles every stage of manufacturing in-house to guarantee structural integrity and zero downhole defects.
Automated multi-axis CNC equipment ensuring precise API thread connections and optimized body milling.
Computer-controlled carburizing and quenching for superior matrix hardness and impact resistance.
100% ultrasonic defect detection, hardness testing, and pressure sealing inspection before dispatch.
Over 12,000 units of drill bits & downhole tools annually, ensuring stable lead times and bulk supply.
Equipped with high-precision CNC machining centers, automated thermal treatment lines, and specialized drill bit testing labs, Lilin Group handles every stage of manufacturing in-house to guarantee structural integrity and zero downhole defects.
Certified Quality Management System covering the precision design, manufacture, and servicing of roller bits, PDC bits, and downhole motors for oil and gas operations.
Official API Monogram authorization for Roller Bits and PDC Bits manufacturing.
Certified specification for Rotary Shouldered Connection Threading on downhole tools.
Fukang Road, Gegu Town, Jinnan District, Tianjin, China.
• Tricone Bits (TCI / Steel Tooth)
• PDC Bits (Matrix / Steel Body)
• Hole Openers & Reamers
• Downhole Motors & Tools
• Drill Rods & Casing Tools
