CIR Series Middle-Low Air Pressure DTH Bit – Traditional Low-Pressure Small Diameter Solution for Modest Equipment Requirements (Φ65–Φ140mm)|

The CIR Series Middle-Low Air Pressure Down-the-Hole (DTH) Bit is a traditional low-pressure small diameter solution designed for operators with modest equipment requirements. Featuring a simple structure and broad market availability, this series offers low equipment costs and reliable performance in small to medium blast holes, water wells, and various drilling applications where high-pressure systems are not available or necessary.

Engineered for compatibility with low air pressure hammers, the CIR Series operates effectively in water-bearing conditions, making it a versatile choice for diverse job site environments. The simple construction ensures easy maintenance and widespread parts availability, reducing downtime and operating costs.

Available in four model families – CIR65, CIR70, CIR90, and CIR110 – covering head diameters from Φ65mm to Φ140mm, the CIR Series provides comprehensive coverage for small diameter drilling applications where equipment cost and simplicity are primary considerations.

1. Small to Medium Blast Holes

Widely used in small-scale quarrying and mining operations for blast hole drilling in Φ65–140mm diameters, where the CIR Series delivers reliable performance with modest equipment requirements and low capital investment.

2. Water Well Drilling

Employed in shallow to medium-depth water well construction, with the CIR Series capable of drilling effectively in water-bearing conditions while maintaining simple operation and easy maintenance.

3. Anchor & Micro-Pile Installation

Ideal for anchor drilling and micro-pile installation in construction and civil engineering projects, where the small diameter and lightweight design facilitate handling and maneuverability.

4. Exploration Drilling

Used in mineral exploration programs where low-pressure equipment is preferred and hole diameters are limited, with the CIR Series providing reliable penetration in variable rock conditions.

5. Agricultural & Domestic Water Wells

Applied in agricultural irrigation wells and domestic water supply wells, where cost-effective equipment and simple operation are essential considerations.

1. Traditional Low-Pressure Design

Engineered for compatibility with low air pressure hammers, the CIR Series operates effectively with standard low-pressure compressors, eliminating the need for expensive high-pressure equipment and reducing capital investment.

2. Simple Structure & Easy Maintenance

Featuring a straightforward design with minimal components, the CIR Series enables quick and easy field servicing, with widely available spare parts ensuring minimal downtime and reduced maintenance costs.

3. Broad Market Availability

As a traditional and widely used series, CIR bits and spare parts are readily available through most drilling supply distributors globally, ensuring easy sourcing and rapid replacement when needed.

4. Water-Bearing Formation Capability

The CIR Series design allows for effective drilling in water-bearing conditions, making it versatile for applications where groundwater is present and other bits might experience performance issues.

5. Low Equipment Cost

With simple construction and low manufacturing costs, the CIR Series offers exceptional value for operators with modest equipment requirements, delivering reliable drilling without over-investment in high-pressure systems.

6. Compact & Lightweight

Weighing just 1.5–9.0 kg across the series, the CIR bits are easy to handle, transport, and install, reducing manual handling requirements and improving job site efficiency.

Q1: What air pressure is required for the CIR Series?

The CIR Series is designed for middle-low air pressure hammers operating at 0.5–1.0 MPa (5–10 Bar), making it compatible with standard low-pressure compressors and eliminating the need for expensive high-pressure equipment.

Q2: What head diameters are available in the CIR Series?

The CIR65 covers Φ65–68mm, CIR70 covers Φ76–85mm, CIR90 covers Φ90–110mm, and CIR110 covers Φ110–140mm, providing comprehensive coverage for small diameter drilling applications.

Q3: Can the CIR Series drill in water-bearing formations?

Yes, the CIR Series is designed to operate effectively in water-bearing conditions, making it versatile for water well drilling and other applications where groundwater is present.

Q4: What is the expected service life of CIR Series bits?

Service life varies depending on rock conditions and drilling parameters, but the simple spherical and ballistic button configurations deliver reliable performance for small diameter drilling applications, with reconditioning possible through specialist service providers.

Q5: What are the shipping methods and delivery lead times?

We offer sea freight (20–30 days), air freight (5–7 days), and express courier (3–5 days), with standard production taking 15–20 working days – exact delivery schedules are confirmed upon order placement.

Q6: What after-sales service and technical support do you provide?

We provide a 12-month warranty against manufacturing defects, free remote technical support via phone, email, or video call, and on-site assistance upon request (travel costs apply) – maintenance manuals and genuine spare parts are also available for long-term support.

Q7: What payment methods do you accept?

We accept T/T (30% deposit + 70% before shipment), L/C at sight or usance, Western Union, and PayPal for samples, with Alibaba Trade Assurance also available – terms can be negotiated based on order volume and credit history.