Through‑Hole Casing‑Following PDC Core Bit

Through‑Hole Casing‑Following PDC Core Bit for Unstable & Collapsible Ground

We are a professional PDC drill bit manufacturer . This through‑hole style PDC core bit is engineered for core recovery under challenging unstable ground conditions. It is widely deployed for rock coring in geological prospecting, mineral exploration sampling and municipal water well drilling projects.

Designed with a full‑size central bore, this core bit permits a smaller‑dimension drill bit to pass through internally, enabling simultaneous casing running and casing‑following drilling. When working in fractured rock, gravel strata and hole‑collapse‑prone ground, it reinforces borehole wall in‑situ, prevents bit burying caused by cave‑in and greatly raises overall drilling success rate for troublesome geology.

Available outer diameters: 76mm, 93mm, 112mm, 132mm, 151mm, 171mm, 200mm. Standard thread lengths: 30mm, 40mm, 60mm. Custom non‑standard thread profiles are acceptable to match various local and imported drilling rigs. Thanks to reliable field performance, this drilling tool gains high recognition among drilling contractors and wholesalers from Russia, Kazakhstan, Uzbekistan, Southeast Asia, Ethiopia and European countries. It is heavily used for field geological survey, mining sites and water‑well construction.

Fabricated from high‑strength alloy steel body and durable PDC cutters, it adopts optimized flushing channels for better cuttings evacuation, balancing intact core sample collection and fast penetration rate. Factory direct supply, bulk order & project‑oriented customization are available. We can adjust blade layout and cutter configuration according to local formation features, delivering complete drilling tool solutions for overseas buyers.