Hjg Ql60A High Air Pressure DTH Drill Hammer

HJG(BD DRILL) High Air Pressure Deep Hole Rotary Pneumatic Drilling DTH hammer without foot valve for COP MISSION DHD QL SD.The optimum range of hole size for blast hole drilling with DTH is 90 mm to 254 mm (3 ½"-10″). Smaller blast holes are generally drilled using tophammer, and larger holes generally use rotary machines.In other applications, like foundation drilling, DTH hammers can be used with single bit in hole sizes up to . 750 mm (30″). With multiple hammer units CD (Cluster drills) drill holes up to 70″ or 1778 mm.As a rule of thumb, the smallest hole diameter a DTH hammer can drill is its nominal size. A 4 inch hammer will drill a 4 inch (102 mm) hole. The limiting factor is the outside diameter of the hammer, because, as hole diameter reduces, airflow is restricted. Maximum hole size for production drilling is the nominal hammer size plus 1 inch, so for a 4 inch hammer the maximum hole size is 5 inch (127-130 mm).Choosing the right hammer is largely determined by hole size and type of rock formation. Ideally, the size of the hammer should match the required hole dimension as closely as possible, leaving just enough space for cuttings to evacuate the hole.Length(exclude bit)Weight(exclude bit)External DiameterBit ShankHole RangeConnection Thread1183 mm92.00 kgΦ146 mmQL60Φ155mm _ Φ203mmAPI 3 1/2'' RegWorking PressureImpact rate at 0.5 MPaRecommended Rotary SpeedAir Consumption1.0 MPa1.8 MPa2.4 MPa1.0_2.5 MPa25 Hz20-30 rpm9 m³/min18 m³/min26 m³/min
1.Areyouamanufactureroratradecompany?
Weareamanufacturerof rock drilling equipments and pneumatic tools in China over 17 years.
2.Howmanyworkersinyourfactory?and what is your company scale?
Wehavemorethan 700employees,includingfactoryworkers,salespeople,QC,R&Dandmanagementteam.
With a land area of110,000SQM(=1,184,068 squarefeet)andworkshop sapce of 50,000SQM(=538,213 square feet).We are equiped with over1,000 sets of different advanced equipmentsand facilities required for manufacturing rock drilling machine and pneumatic tools.Our annual output value is overUS dollars 50 million.Over50-70%for export which covers most of the global markets including Korea,Malaysian,Australia,Russia,Middle Asian,East,Europe,South America,and Africa etc..
3.Whereareyourcompany?
WearelocatedinChangsha city,Hunan province,where our first chairman Mao was born.1 and half hours by car from the nearest Huanghua international airport,2 and half hours by CHR express from Guangzhou nan station to Changsha city.
4.WhychooseHJG DRILL?
1)Wehavemorethan17yearsofresearching,developing,manufacturing and exporting high quality rock drilling equipments and penumatic toolsto the global market.
2)High quality compatible withSandvik, Atlas Copco,Ingersoll Rand etc...
3)Unbeatableprice
4)Excellent service.
5.Whichportdoyoushippingfrom?
WeusuallyshipcontainerfromShanghai port.Guangzhou port is available too.
6.CanyouacceptOEM&ODM?
Yes,bothofthemareacceptable.
7.Whatisyourminimumorderquantity?
OurMOQare1pcor 1 completeset,thepricemayrelyontheorderquantity.
8.Whatisyourpaymentterm?
WecanacceptT/T,L/Catsight,Westunion and in cash.
9.Howaboutthedeliverytime?
Italldepends,generallyittakesaboutone month both in peak and off season.
10.Could we make a schedule of an appoinment with your company?
Definitely.You are the most welcome.Please inform us your arrival time in any place of China and initial routine in advance.We can reserve the hotel,offer pickup service from Changsha Huanghua airport or the CHR Express station unpon your arrival and after the appoinment.Be our guest then!