40 Inches HDD Horizontal Directional Drilling Hole Opener
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| Application | Hard formations for high compressive strength, such as sandstone, hard shale, dolomite, hard gypsum, chert, granite, etc. | ||
Solidkey services for clients who works in HDD hard rock and difficult conditions drilling since 2009, we are preparing well to work at any time and any places.
Regular procedure for hole opener:
Step 1: Drill a pilot hole
We offer metal-face and elastomer sealed bearing tricone pilot bits, regular sizes includes 5 1/2", 6", 6 1/2", 7 1/2", 7 7/8", 8 1/2", 9 1/2", 9 7/8", etc.
Step 2: Enlarge the pilot hole, step by step, with different hole openers from small to big.
You can expand the pilot hole by 4" one stage(for example, from 12" to 16" to 20",etc) or 6" one stage(for example, from 12" to 18" to 24",etc).
Solidkey HDD pilot bit and hole opener specializes in drilling hard rocks, it can drill any type of rock conditions. If you have specific need of the hole opener, tell us please, we are preparing well to offer the most cost-effective solutions.
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Regular Models
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Related Catagories
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| PDC Bits | Hole Opener | Roller Cones (Thirds) | Piling Roller Cones |
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