Min. Order Reference FOB Price
1 Piece Negotiable
Product Description
Frictional Drill Bar / Frictional Kelly Bar Foundation Drilling Tools for Rotary Drilling Rig Parameter Frictional Kelly Bar: Outer Diameter Elements / Sections Retracted Length (mm) Max Depth (m) 298 4 or 5 7.5-11 32.5-50 324 4 8-9 25.5-32.5 340 4 9-16 32-56 355 4 or 5 6-12 ...