Soft Formation Drilling Concentric Casing Block System Matched DTH Drill Rig for Small-to-Medium-Sized Grouting Holes

Customization:	Available
After-sales Service:	One Year
Warranty:	One Year

Basic Information

Model NO.

BOD194

Process

Forging

Material

Alloy Steel

Hammer Type

5’’-24’’ Hammer

Application

Pile Drilling, Water Well Drilling

Package

Wooden Case or Carton

Capacity

5000 PCS/Month

Origin

China

Product Description

Concentric/Symmetric Slide Block Casing Drilling Assembly Bit

Our concentric casing system with blocks is specifically designed for drilling in soft and unstable formations, making it ideal for applications such as geothermal wells, water wells, small-to-medium-sized grouting holes, and micro-piling projects.

Key Features

◈
Tailored for Soft Formations: Designed to excel in soft formations, including those with high mud content and abundant floating rocks.
◈
High-Performance Materials: Utilizes specialized 25Si2MnCrNi2MoV material. Blocks undergo surface treatment to achieve HRC42-45 hardness, significantly extending lifespan.
◈
Simplified Operation: High efficiency design saves time on tool replacement and boosts overall work performance.

Application Scenarios

The versatility of our Concentric Casing System makes it widely applicable across various industries:

Common Uses: Open-pit mining, underground mining, tunneling, anchoring projects, blast furnace tapping, hydroelectric projects, quarrying, and land preparation.

Technical Specifications

Model	Casing OD (mm)	Casing ID (mm)	Reamer (mm)	Blocks Qty	Shoe ID (mm)	Hammer Size	Drill Rod (mm)
BOD168	168	156	185	2	142	5" Hammer	76/89
BOD178	178	158	195	2	148	5" Hammer	76/89
BOD194	194	180	209	2	167	6" Hammer	89/114
BOD219	219	205	237	3	192	6" Hammer	89/114
BOD273	273	259	308	3	242	8" Hammer	114
BOD406	406	382	426	4	360	12" Hammer	127

Drawings & Dimensions

Packaging & Shipping

After Sales Service

Standard Warranty: 12 months or 2,000 operating hours.
Extended Warranty: Optional coverage up to 36 months.
Global Support: 24/7 technical assistance and spare parts supply.
Training: On-site or remote operation and maintenance training.

Company Profile

We are a specialist manufacturer of rock drilling tools, committed to research, development, and production since 2008. Our mission is to provide high-quality, efficient, and reliable drilling solutions that enhance productivity and reduce operational costs.

Why Choose Us?

• OEM/ODM capabilities
• Competitive pricing & bulk discounts
• Fast shipping support
• Turnkey project solutions

Other Products

• Threaded Drill Rods & Bits
• Coupling Sleeves
• Eccentric Casing Systems
• Double Casing Drilling Systems

Project Cases

Frequently Asked Questions

Q1: What is the lead time for standard orders?

Standard models typically ship within 15–30 days, while customized units require 30–45 days depending on specifications.

Q2: What formations is this concentric casing system best for?

It is specifically engineered for soft and unstable formations, including areas with high mud content and floating rocks.

Q3: Do you provide technical support for international customers?

Yes, we provide 24/7 global technical assistance and have partnered service centers in several key regions.

Q4: Can I request customized casing shoe or bucket sizes?

Absolutely. We offer tailored designs and configurations to meet specific project and rig requirements.

Q5: What is the durability of the slide blocks?

The blocks are made from high-strength alloy steel and undergo deep heat treatment to reach a hardness of HRC42-45, ensuring exceptional wear resistance.

Q6: What export documentation is provided?

We provide a full export package including Commercial Invoice, Packing List, Bill of Lading, and Certificate of Conformity (COC).