Concentric Casing System with Blocks

To ensure exceptional durability and wear resistance, we subject our blocks to deep heat treatment processing. Additionally, our precision-engineered installation holes, created using advanced slow wire cutting techniques, guarantee seamless and hassle-free block usage.

Specifications

Model	Outer diameter (mm)	Inner diameter (mm)	Reamed diameter (mm)	Number of block	Inner diameter of casing shoe (mm)	Hammer type	Drill pipe (mm)
BOD168	168	156	185	2	142	5 inch hammer	76/89
BOD178	178	158	195	2	148	5 inch hammer	76/89
BOD183	183	163	200	2	152	5 inch hammer	76/89
BOD194	194	180	209	2	167	6 inch hammer	89/114
BOD219	219	205	237	3	192	6 inch hammer	89/114
BOD245	245	225	264	3	210	8 inch hammer	114
BOD273	273	259	308	3	242	8 inch hammer	114
BOD325	325	305	358	3	282	10 inch hammer	114
BOD406	406	382	426	4	360	12 inch hammer	127

Features

Tailored for Soft Formations: Our drilling system is designed to excel in soft formations, including those with high mud content and abundant floating rocks.
High-Performance Materials: We utilize specialized materials, such as 25Si2MnCrNi2MoV, for manufacturing our drilling tools. The blocks undergo surface treatment to achieve a hardness rating of HRC42-45, significantly extending their lifespan.
Simplified Operation: With our drilling tools, you can save time on tool replacement and boost overall work efficiency.

Starockdrill, a specialist manufacturer of rock drilling tools, has made a firm commitment to fulfill customers’ expectations by providing premium quality drill rods, drill bits and other drilling accessories. At Starockdrill, our primary goal is to get customers’ drilling tasks done efficiently and effectively. Our experts of rock drill tools demonstrate their expertise in a number of different projects of aggregate mining, water well drilling, tunnel boring and piling. Trusted by global drilling contractors and customers who looking for high quality drilling tools for their drilling rigs and rock drilling machines, we would be honored to have the opportunity to earn your trust and provide you with rock drilling products that meet your application needs.