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Drill stem tools

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By-pass Valve of Drill Tool

Float valve

The Inside BOP

ddddType FJ-Arrow Back Pressure Valve

Type FJ-Arrow Back Pressure Valve

Full-opening Valve

Kelly Valve

ddddThe Kelly Splash Valve

The Kelly Splash Valve

Type FT Drop-in Check Valve

The Reversing Sub

The Drill-Stem Sub

The Drilling Reamer

Non-Rotating Stabilizer

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