Connection part between drill shanks, and between drill shank and bolt drill bit. Drill shank sheath is connection part between drill shanks, and between drill shank and bolt drill bit. Due to its work requirement, we adopt special steel, so it is characterized by larger...

can be used together with various drill machine in underground coal mine. SpecificationDrill Hole Diameterφ42,φ55,φ60,φ75,φ90,φ108,φ113Coupling Dimensionectangular Thread, coupling withφ42,φ50,φ63.5,φ70 of drill rod etcSpecial service...

The high efficiency and high strength,Can take reverse rotation Anti-collapse high efficiency combined drill bit has the high efficiency and high strength, it adopts multistep drilling mode: the first class is two-wing drilling, the second class is expanding bit which adopts...

Made of superior steel with high strength and good toughness. Able to drill the rock with hardness f<=7 The drill body is made of superior steel with high strength and good toughness. Due to good hard alloy used for the edge, its concussion performs very well. So it is able to...

Adopts special geological steel and advanced friction welding method. For keeping linear effect during heading road, it adopts special geological steel and advanced friction welding method with following features: high strength, super bend-resistance strength, stable welding, long...

Meet the practical needs for water and gas exploring and injection under the coal mine. High-efficiency Spiral Drill RodThe high-efficiency spiral drill rod can meet the practical needs for water and gas exploring and injection under the coal mine. It adopts square coupling for...

Adopts the technique of finish casting,Suitable for drilling in soft rock with hardness f<=5. With high cost performance. Adopts the technique of finish casting,Suitable for drilling in soft rock with hardness f≤5. With high cost performance.Bore Hole...

Made of high-grade alloy steel for assuring drilling efficiency. The base body is made of high-grade alloy steel for assuring drilling efficiency. Because the drilling depth is usually up to dozens of meters, the strength and toughness of drill bits must be powerful. All the alloy...

top quality, long service life and reasonable price. The pick is an important part ,mainly consumable of road header. impact-resistance and friction-resistance international advanced techniques in material selection, machining, heat treat, welding method, and surface...

flame retardant, antistatic guide air ducting Utilizing the liquid insulator Utilizing the liquid insulator, and due to aborative design for improvement of flame retardant, antistatic, tearing, burliness and other aspects, the air ducting finally gets the common...