Coupling sleeve- China Factory rock drilling tools

（1）Thread：T38,T45,T51,T60;

（2）Length (L): 190mm~260mm;

（3）Package: In wooden case or in carton;

（4）Supply ability:10000pcs/month;

（5）Delivery time :7-10days;  

Coupling sleeve have different length , we can according to require of customer to produce ,and the products are mainly used to transmit impact energy into the drill string , CNC processing procedure ensure the perfect match of thread ,Reliable quality from precise supervision of heat-treatment, the products are of great endurance and dependability.  

Sinic Rock Drilling Tools Co.,Ltd. are a professional manufacturer of rock drilling tools in China. Our main products include button bit 、tapered button bit 、thread button bit 、retrac button bit 、cross bit 、chisel bit 、shank adapter 、coupling sleeve、Drifting drill rod、Extension drill rod、MF(male female)rod 、speed rod 、tapered drill rod 、Hex drill rod、Integral drill rod、 coal mining bit 、Tunneling bit 、road planing picks 、conical picks 、crusher picks 、flats picks 、surface mining tools 、Trenching tools 、Foundation drilling tools 、Grader blades 、DTH bit 、DTH hammer 、DTH drill rod 、 self drilling anchor bolt 、self drilling anchor accessories 、Blast furnace tapping hole tools 、Roller cutter bit 、TBM cutter 、cutting tools which are used for mining, quarrying, tunneling, water well drilling, mineral exploration, geological prospecting, civil engineering and construction. Etc.