SOD168 Retrievable Symmetrix Casing

SOD 168 mm Retrievable Symmetrix Overburdern Drilling System with DHD350 DTH hammer

Retrievable <span “=””>symmetric drilling system by <span “=””>DTH hammer is designed to drill and case a hole simultaneously through unstable ground conditions. The driver rock drill bits incorporated with a satisficial ring or reusable ring makes a full face head design which significantly improves the penetration rate and hole straightness of drilling. The internal flushing grooves together with the built-in casing shoes gives a good seal to the button of the drilling hole, minimizing the disruption of the drill hole’s surrounding.

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Advantages：

Full face head desigh for faster penetration and straighter hole

Less torque is required

Can drilll in vertical, horizotal or any direction

Minimize disruption to the drilled hole

Varied ring bit diameters to suit different casing requirement

This is SOD 168 system. It is symmetrix system with ring bit set.The outer diameter is 182mm.the inner diameter is 135mm.it can be matched with casing 168mm and hammer DHD350. Ring bit and a casing shoe compressed together and make an integral set.The casing shoe is threaded connection to the casing, so that it is reliable during drilling.