Coupling Sleeves
SINODRILLS Coupling Sleeves
Coupling sleeves are used to connect shank adapter and drill rod, or joint several rods to each other. Full bridge coupling sleeves and Semi-Bridge Coupling sleeves can be supplied by SINODRILLS.
Full bridge coupling sleeves: It eliminates the potential for the coupling to creep along the threaded joints.
Semi-Bridge Coupling sleeves: There is a non-thread bridge in the middle of the coupling, it can avoid drill rod thread past the center of the couplings.
SINODRILLS Coupling Sleeves Specifications
Thread Size: R22, R25, R28, R32, R38, T38, T45, T51
Length: 150mm --- 250mm