The company is specialized in manufacturing DHT bit, DHT hammer, air-leg rock drill, product quality has reached advanced level in the industry.
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ZRC4A-DHD340 Techinical Specifications
Length w/o bit
Weight w/o bit
Thread Rec. hole size
985 38 99 API 2 3/8 REG 110-135
Work pressure
Impact Frequency
Air consumption
Rec. rotation speed
1.0-2.5 30 at 1.7 Mpa 6-14 25-40
ZRC4A-DHD340 DTH hammer features
1Mainly for blasting hole above 110mm, in geothermal, water well, mining and quarry etc;
2Drill bit without footvalve, and thus avoid the trouble caused by footvalve crack, broken, thermal expansion and contraction etc.
3Low impact power consumption, fast impact frequency, 15%-20% faster in penetration speed than same model with footvalve type;
4Low air consumption, energy saving, saving more than 10% oil than same model with footvalve type;
5Simple structure, easy maintance; highly matched parts, more realiable, low faliure rate; low disamble rate, long service life, low operating cost, very steady in performance.



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Add:No.3701, Zhuangjian Road, Kuiwen Economic Development District, Weifang City, Shandong Province, China