coupling sleeves for rock drill rod connection160mm

We are a professional productions base of series ofrock drilling tools,mining tools,DTH Drill nstruction tools andexcavating coal pick cutter tools,we can also produce other products accordingto the customers requirements.we sincerely welcomes friends of both home andabroad to come for business talks.
Extension drilling tools
Button bit,face design:Flat face,drop centre,Normaland retrac body.
tungsten carbide(Buttons):Spherical,ballistic andConical.(Threaded R32,T38,T45,T51,bit diametre:45mm-127mm);
Couplings sleeves-manufactured with a middle stop toprevent walking along the thread.Include couplings sleeve(threaded R22,R25,R28,R32,R38,T38,T45,T51)
Shank adaptors-carburized and manufactured with tighttolerances and controlled straightness.

Thread button bits made with high quality of best quality alloy steel bar and tungsten carbides, through heat treatment so that it can withstand the toughest rock drilling demands,and transmit intensive impact energy into the rock with the least possible loss of energy 

According to different drilling application, we have different design to meet customers with good quality and good price .No matter what kinds of rock-Soft rock, loose-medium rock, hard rock and any other special formations, just tell us what you need and leave others at our disposal, we will handle the following, our special Tailored service is waiting for you upon your demand. 

(1)Thread: R22, R25, R28, R32, R35, R38, T38, T45, T51, ST58, T60 

(2)Diameter: 38-127mm. 

(3)Package: in wooden case or in carton. 

(4)Productivity: 10000pcs/ month 

Especially our ST58, GT60 Button Bit Retrac Bit, which is widely welcomed by our client with good quality and good price.

1. According to the technical drawings using standard material specification productio
2. Color: Customized according to customer requirement
3. Provide samples and can produce products according to customer's sample.

Payment: T/T, 30% in advance, 70% before shipment.
Delivery time: about 15-20 days.