New Generation Reverse Circulation Drill Rig Launched

We are pleased to announce the official launch of the all-new 300m Reverse Circulation Drill Rig, featuring a standard borehole diameter of 325 mm. Designed to meet the growing demands of geological exploration, mineral sampling, and geotechnical engineering investigation, this equipment breaks through the operational limitations of traditional drilling rigs.

Leveraging years of technical expertise in drilling equipment, our R&D team has successfully developed this high-efficiency reverse circulation (RC) drill rig. Particularly suited for shallow to medium-depth exploration, it offers a reliable, cost-effective, and integrated drilling solution. This new addition further enriches our product portfolio and helps the industry improve efficiency and quality.

Key Specifications

• Maximum drilling depth: 300 m

• Standard borehole diameter: 325 mm

• Applications: Shallow to medium-depth geological exploration, mineral resource sampling, engineering geological investigation

• Core technology: Reverse circulation drilling process, equipped with dual-wall drill pipe and air hammer system

Working Principle – Advanced Reverse Circulation Drilling Technology

Unlike traditional diamond core drilling, this rig focuses on cuttings sampling, offering a simpler process and higher efficiency.

The rig is equipped with a dual-wall drill pipe (outer drill pipe + hollow inner tube), enabling continuous, stable, and smooth return of cuttings to the surface. This completely resolves common issues such as cutting retention, poor backflow, and sampling interruptions found in conventional drilling.

The air hammer drives a tungsten‑carbide alloy bit to percussively break hard rock formations. The reciprocating piston generates high-frequency impact, giving the rig exceptional breaking capability in various hard rocks such as granite, limestone, and sandstone. Compared to traditional equipment, it achieves higher breaking efficiency and more stable operation.

Clean & Reliable Sample Collection

The system uses compressed air to create a stable reverse circulation. Cuttings produced by the bit are rapidly pushed upward through the inner tube of the dual-wall drill pipe by air pressure. The entire process is enclosed – no spillage, no cross‑contamination – effectively avoiding external pollution and maximizing sample authenticity and integrity.

Once the cuttings reach the surface, they pass through a hose into a cyclone separator for standardized splitting. The final clean sample falls into a dedicated sample bag, clearly labeled with position, depth, and other information, ready for direct delivery to a laboratory for geological assay, resource reserve analysis, and rock structure interpretation. The entire process significantly shortens the exploration cycle.

Key Advantages Over Conventional Drills

• Higher efficiency – Eliminates tedious core extraction; cuttings sampling greatly improves operational efficiency and reduces labor and time costs.

• Higher sample purity – Enclosed reverse circulation delivery prevents external contamination, giving more representative samples.

• Superior durability – Mature air‑operated system with low failure rate, easy maintenance, and suitability for continuous operation in harsh field conditions.

• Better economy – Combines high efficiency, accuracy, and stability for lower total operating costs.

Quality Assurance & Comprehensive After‑Sales Support

With years of experience in the R&D and manufacturing of piling and drilling rigs, we always put real project needs first. From raw material selection, precision machining, to factory commissioning, every machine undergoes multiple rigorous quality inspections – ensuring reliable quality and stable performance. We also provide a complete one‑stop after‑sales service, including installation & commissioning, operator training, technical guidance throughout the process, regular follow‑up visits, and rapid fault response. Our goal is to support your project from start to finish, giving you peace of mind in procurement and confidence in operation.

Continuous Innovation – Upgrading the Exploration Industry

The launch of this 300m Reverse Circulation Drill Rig is an important achievement of our commitment to technological innovation and customer focus, fully demonstrating our strong capabilities in drilling equipment R&D and manufacturing.

Looking ahead, we will continue to address industry pain points, optimize product performance, and introduce more high‑quality, high‑efficiency, and highly adaptable reverse circulation drill rigs, empowering the sustainable development of global geological exploration, mineral development, and engineering construction.

Frequently Asked Questions（FAQ）

1. What types of formations can this 300m RC drill rig handle?

This rig is designed for hard rock formations including granite, limestone, and sandstone. The air hammer driven tungsten carbide bit delivers high-frequency impact, making it highly effective for medium-hard to very hard rock.

2. How does reverse circulation drilling differ from traditional core drilling?

Traditional core drilling extracts a solid core sample, which requires time‑consuming handling and can cause low recovery in broken ground. RC drilling returns rock cuttings continuously through the inner tube of a dual‑wall drill pipe using compressed air. The process is faster, produces uncontaminated samples, and is ideal for mineral exploration and geotechnical investigation.

3. How are samples collected and kept free from contamination?

Cuttings are transported in a completely enclosed reverse circulation loop – they travel up through the inner pipe without contact with the borehole wall. At the surface, they pass into a cyclone separator for splitting, then fall into clean sample bags. This closed system eliminates external contamination and cross‑contamination between depths.

4. Do you provide international shipping and local support?

Yes. We ship worldwide and can arrange local or remote technical support. Contact us for a shipping quote and support options in your region.

5. How can I get a price or a custom quote for my project?

Please use the contact form on this page or email our sales team. We will ask about your typical rock types, required depth, and site conditions to provide a tailored quotation.