Engineered for high penetration rates and extended durability in complex geology. Explore our top structural drill rods optimized for Barcelona tunnel drilling, rock bolt installations, and mining projects.
Barcelona and the wider Catalonia region are characterized by a highly complex geological structure. Underground engineering in this region requires drilling equipment that can adapt to rapid transitions between alluvial soils, dense clays, fractured limestone, and highly abrasive granitic formations along the coastal ranges. Key civil projects—including the continuous expansion of the **Barcelona Metro Line 9 (L9)**, high-speed rail links (AVE), and sub-urban drainage tunnels—face challenging excavation faces where drilling efficiency directly determines project deadlines.
The transition from the metamorphic formations of the Collserola Range to the sedimentary basins of the Besòs and Llobregat rivers presents significant stress on rock drilling consumables. Tapered drill rods used in these environments must offer high fatigue strength, precise taper geometry, and exceptional shock-wave transmission efficiency to prevent premature rod breakage and premature button bit loss.
Furthermore, Barcelona's strict environmental regulations regarding noise, vibration, and dust control require construction contractors to maximize drilling efficiency. High-performance tapered rods (H22 and H25) with specialized heat treatments help ensure smooth energy transfer from the jackhammer or hydraulic drifter to the rock face, minimizing energy dissipation and reducing ambient operational vibration in urban areas.
To ensure high durability under extreme torsional and compressive loads, Shandong E-Way Machine manufactures tapered drill rods using premium alloy steel grades. Our manufacturing process integrates precise carburization, induction hardening, and shot-peening treatments to balance outer surface wear resistance with inner core toughness.
| Parameter / Specification | H22 Tapered Drill Rod | H25 Tapered Drill Rod | Manufacturing Technology |
|---|---|---|---|
| Hexagonal Shank Sizes | 22 mm × 108 mm, 22 mm × 82.5 mm | 25 mm × 159 mm, 25 mm × 108 mm | Cold-drawn & Precision Forged |
| Taper Angles Available | 7°, 11°, 12° (Conical Connection) | 11°, 12° (High Heavy Duty) | CNC Machined & Inspected with Taper Gauges |
| Steel Grade Comp. | 95CrMo / 23CrNi3Mo / 40SiMnCrNi15 | 23CrNi3Mo / 95CrMo | EAF + LF + VD Vacuum Treated Steel |
| Surface Treatment | Carburization (0.6 - 0.8 mm depth) | Full-body Carburization | Shot-peening & Anti-rust Oil Coating |
| Core Hardness | 38 - 45 HRC | 40 - 46 HRC | Controlled Quenching & Tempering |
| Flushing Hole Type | Fully Centered Round Hole | Fully Centered Round Hole | Internal Anti-corrosion Lining (Standard) |
Our strict CNC tolerances guarantee that 7°, 11°, and 12° tapers perfectly match international standard button bits. This uniform contact distribution minimizes stress concentration at the rod tip, preventing split tapers.
Utilizing computer-controlled atmosphere furnaces, the carburization layer penetrates evenly. This dual-structure creates a hard casing to resist frictional wear, while retaining a shock-absorbing core.
Premium straightness limits deviation to under 0.5mm/m. The high-precision concentric flushing hole ensures continuous flow of air or water, cooling the bit and expelling rock cuttings effectively.
As a leading Chinese manufacturer, Shandong E-Way Machine combines metallurgical expertise, industrial scale, and cost control to offer significant advantages to distributors and infrastructure companies in Barcelona. Our production capabilities allow us to source high-quality raw steels and process them using state-of-the-art automation, delivering performance comparable to premium European brands at a lower total cost of ownership.
Direct procurement from Chinese factories can occasionally present logistical and quality assurance concerns for European buyers. To address this, we have developed a comprehensive export framework designed specifically for the Spanish market:
We provide real-time batch testing certificates, steel mill heat numbers, and ultrasonic inspection reports before the shipment departs from Qingdao port, ensuring transparent quality assurance.
We offer flexible incoterms, including CIF Port of Barcelona and DDP logistics options. We handle custom duties, EU import clearances, and deliver directly to your warehouses or job sites.
Need non-standard shank adapters, custom lengths (e.g., 3200mm, 4800mm), or unique taper angles? Our design engineers can manufacture custom orders according to your exact specifications.
European civil engineering projects operate under strict safety guidelines. At Shandong E-Way Machine, we ensure our products comply with all relevant European and Spanish regulations, allowing contractors to use our drilling consumables on public tenders and private developments.
Our manufacturing protocols align with European standards, including UNE-EN ISO 9001:2015 for quality management systems. All steel alloys used are fully traced back to national metallurgical standards, ensuring consistency in strength and fatigue behavior.
Furthermore, our tapered rods are compatible with major hydraulic and pneumatic drill brands active in the European market, such as Epiroc, Atlas Copco, Sandvik, Furukawa, and Montabert. This universal design makes it easy to integrate our products into your existing equipment fleet.
Driving Innovation in Industrial Machinery and Building a New Era of Advanced Equipment Manufacturing
Shandong E-Way Machine Co., Ltd. is a modern industrial equipment manufacturer dedicated to the research, development, production, and service of high-quality machinery and engineering solutions. With a strong focus on technological innovation and manufacturing excellence, the company serves customers in mining, construction, and various heavy-duty industrial sectors worldwide.
Over the years, Shandong E-Way Machine has developed a diversified product portfolio covering mining and construction drilling equipment, pneumatic and hydraulic tools, anchoring and support systems, mechanical transmission components, and a wide range of spare parts and accessories. In addition, the company provides customized machining services, including precision components, structural parts, and wear-resistant engineering plastic products, meeting the specific needs of different working conditions and industries.
Innovation is the core driving force behind Shandong E-Way Machine’s sustainable development. The company brings together experienced engineers and technical experts specializing in mechanical design and industrial equipment development. Through continuous research and development, we improve product structures, enhance operational efficiency, and upgrade performance reliability.
By integrating advanced manufacturing technologies and practical engineering experience, we have developed a series of independently designed products that deliver stable performance even under complex and demanding working environments.
Quality is the foundation of our enterprise. Shandong E-Way Machine strictly follows a comprehensive quality management system throughout every stage of production—from raw material selection and precision machining to final inspection and testing.
Understanding the critical importance of safety in mining and industrial applications, our products are engineered with enhanced structural strength, safety protection features, and long-term durability. This ensures reliable operation under high load, harsh conditions, and continuous working environments.
At Shandong E-Way Machine, we uphold a customer-first philosophy and are committed to delivering complete lifecycle support. Our service system includes pre-sales consultation, technical solution design, installation guidance, and comprehensive after-sales support.
We aim not only to provide high-quality products but also to ensure customers receive timely technical assistance and reliable service throughout the entire usage process. This commitment enables long-term partnerships and mutual success with our global clients.
Moving forward, Shandong E-Way Machine Co., Ltd. will continue to embrace the principles of innovation-driven growth, quality excellence, and service-oriented development. We are committed to advancing intelligent manufacturing, expanding application areas, and improving product efficiency, safety, and sustainability. Together with global partners, we strive to contribute to the continuous progress of the industrial machinery sector and create a smarter, safer, and more efficient future.
Our workshop utilizes automated welding, precision cutting, and advanced heat treatment lines to ensure consistent quality for every production run.
Component assembly
Integral assembly
Slice
Drum
Weld
Assembly table
Cutting machine
Barrel winder
Buried welder
The rock drilling industry is shifting toward automated, deep-hole drilling systems that use hydraulic rigs with high impact power. This evolution places greater demand on the drilling steel. Here are the key technical developments we are monitoring and integrating into our product lines:
Traditional carbon-steel rods are being replaced by high-strength, low-carbon nickel-chromium-molybdenum alloy steels. These alloys provide higher fatigue limits, allowing rods to withstand millions of percussion cycles without developing micro-cracks.
During wet drilling, flushing water can cause pitting corrosion inside the central flushing hole, which can lead to fatigue failure. Applying chemical rust-resistant coatings to the inner wall helps prevent corrosion and extends the overall service life of the rod.
Explore our complete catalog of tapered drill rods, self-drilling anchor bars, hollow steel bars, and DTH pipes. All products are manufactured in our certified facility and are ready for export to Barcelona.
Get professional answers to common questions about selecting, operating, and maintaining tapered drill rods in rock excavation projects.
Contact our technical sales team today. We provide engineering support, custom quotation files, and technical consultations to help improve your drilling efficiency.
