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Coal Mining Bits for underground coal mining
（1）Thread: R22, R25, R28, R32;
（2）Material: 50R61;
（3）Bit diameter:33mm-127mm;
（4）Drill rod length:600mm-8000mm;
（5）Package: in wooden box or in carton;
（6）Supply ability:10000pcs/month;
（7）Delivery time: 7-10days;
Coal mining tools
（1）Step shank: 43mm/35mm (1.70” /1.38” );
（2）Shank: 35mm (1.38”), 30mm (1.18”) , 25mm (0.99”) ;
（3）Carbide tips: plug tips , Narrow-bottom;
（4）Package: in plastic box;
（5）Supply ability: 50000pcs/month;
（6）Delivery time: 7-10days;
Steel Body, made by material 40Cr or 42CrMo, heat treatment with 40-44HRC hardness, has high toughness and wearable character. Tip is made from Low press Sintered, and Suitable Grade Selected according to the Target Projects, Which are to make sure the good performance during working.
The products adapt to the machine with all the performance features such as a high feed rate, a long service life and short tool changing times. Together with the parts supply assurance, a high daily production volume, and above-average economy is guaranteed.
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