WS39 casing tooth
JM cutter tooth
B47K22 bullet toothCASE STUDIES
Field trials and on-site support
Explore roller-bit replacement, core-barrel design and on-site fitting through the people, photographs and recorded outcomes behind each project.
Roller-bit replacement & follow-up
MH-3 replacement: approximately 57 m recorded
Zengcheng · 2022
Positioning, welding guidance and operator support on the customer’s existing barrel. Follow-up recorded approximately 57 m of cumulative drilling.
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Site support & custom tooling
From site support to a 1.6 m custom order
Hunan · 1,500 mm site support → 1,600 mm new-project order
On-site inspection and fitting guidance were followed by a new order: a taller 1.6 m core barrel and a separate core-recovery tool.
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Site trial
800 mm high-spiral barrel: site trial
Jieyang · June 2025 · 800 mm high-spiral roller-bit core barrel
A new barrel design for cuttings discharge, followed by encouraging operator feedback, recovered rock and dated wear checks.
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On-site fitting & welding
MH-3 positioning and welding on site
Zaozhuang · May 2020 · MH-3 roller bits
Corrected mounting openings, a checked positioning jig and a documented welding sequence on the customer’s existing barrel.
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Field method adjustment
Faster progress after a change of method
Guangdong · 5–6 December 2023 · B47K22 / 1,000 mm core barrel
Recovered material and a lifted-tool inspection led the crew to direct breaking and clearing with a 1,200 mm bucket. The site reported faster progress after the change.
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Tooth position & work records
TianGui: trench cutter tooth inspection
Guangzhou · Field inspection & working log
Actual wheel and holder photographs, with six log entries separating cutting, lifting and maintenance.
See the inspection recordLooking for inspection records? Browse site surveys & repair assessments or field inspection records in Resources.