Propower factory can give the lowest price due to direct sale to customers without distributor!
Application Range: It is suitable for drilling water wells, geothermal wells, Micro piles, medium mini-type grouting hole of building, dam and harbor project.
Design Principles: Make the casing follow easy and the equipment and operation simple.
Outstanding Advantages:Simple structure, easy operation, reliable quality, retrievable drilling tools, and long service life.
1. As soon as the drilling starts, the reamer opens and enlarges the hole to drive the casing shoe and casing tube down.
2.When drilling in over-burden formation is done, Start reverse circulation to close the reamer, and then pull up the assembly through the casing tube.
3.The casing tube can be left in the hole, or can be pulled out by means of grout sealing material.
4.Use the normal drilling tools to drill and achieve to the desired depth.
Type | 1.Casing tube | 2.Drill pipe | 3.Guide sleeve | 4.DTH hammer | 5.Casing shoe | 6.Guide device | 7.Reamer |
OD90 | Maximum OD:115mm Minimum ID:102mm | connection thread:API 2 3/8"REG OD:76mm wrech flats:65mm | Effective length: 174mm | HD35,COP32, IR3.5,QL30 | L3=90mm, L4=55mm, D3=101mm, D4=93mm | L1=35mm, L2=138mm, D1=92mm, D4=100mm | D5=91mm,L5=70mm, reaming |
diameter=123mm, reamer has4*Φ12buttons | |||||||
OD115 | Maximum OD:142mm Minimum ID:128mm | connection thread:API 2 3/8"REG OD:76mm wrech flats:65mm | Effective length: 174mm | HD45,COP44, SD4,DHD340A, QL40,HM4 | L3=76mm, L4=55mm, D3=127.5mm, D4=117mm | L1=48mm, L2=136mm, D1=115mm, D4=126mm | D5=114mm,L5=89mm, reaming diameter=152mm, |
reamer has5*Φ14buttons | |||||||
OD140 | Maximum OD:171mm Minimum ID:155.6mm | connection thread:API 2 3/8"REG OD:89mm wrech flats:65mm | Effective length: 205mm | HD55,COP54, SD5,DHD350R, QL50 | L3=90mm, L4=63mm, D3=155.3mm, D4=143mm | L1=55mm, L2=160mm, D1=141mm, D4=154mm | D5=138mm,L5=69.5mm, reaming diameter=185mm, |
reamer has7*Φ14buttons | |||||||
OD165 | Maximum OD:195mm Minimum ID:182.6mm | connection thread:API 3 1/2"REG OD:114mm wrech flats:95mm | Effective length: 225mm | HD65,COP64, SD6,DHD360, QL60 | L3=95mm, L4=55mm, D3=181.5mm, D4=166mm | L1=61.5mm, L2=181.5mm, D1=165mm, D4=178mm | D5=164mm,L5=79.5mm, reaming diameter=211mm, |
reamer has7*Φ14buttons | |||||||
OD190 | Maximum OD:222mm Minimum ID:205mm | connection thread:API 3 1/2"REG OD:114mm wrech flats:95mm | Effective length: 285mm | HD65,COP64, SD6,DHD360, QL60 | L3=110mm, L4=70mm, D3=204.5mm, D4=193mm | L1=62.5mm, L2=184.5mm, D1=191mm, D4=203mm | D5=185.5mm,L5=90.2mm, reaming diameter=237mm, |
reamer has7*Φ16buttons | |||||||
OD240 | Maximum OD:273mm Minimum ID:260.4mm | connection thread:API 3 1/2"REG OD:114mm wrech flats:95mm | Effective length: 343mm | HD85,COP84, SD8,DHD380, QL80 | L3=110mm, L4=65mm, D3=259mm, D4=241mm | L1=70mm, L2=190mm, D1=240mm, D4=256mm | D5=238mm,L5=100mm, reaming diameter=308mm, |
reamer has14*Φ16buttons | |||||||
OD280 | Maximum OD:324mm Minimum ID:305mm | connection thread:API 4 1/2"REG OD:114mm wrech flats:95mm | Effective length: 305mm | SD10,NUMA100 | L3=125mm, L4=75mm, D3=304mm, D4=281mm | L1=97mm, L2=254m |
How to Select DTH Bits Face shape and Carbide Button Shape
A:Bits face shape selection
Drop Center Bit
For high penetration rates in soft to medium-hard and fissured rock formations.
Concave Face
The all-round application bit face specifically for medium hard and homogeneous rock formation. Good hole deviation control and good flushing capacity.
Convex Face
For high penetration rates in soft to medium-hard with low to medium air pressure. It is the most resistance to steel wash, and good resistance to steel wash step gauge bit.
Flat Face Bit
This kind of face shape is suitable for hard to very hard and abrasive rock formations in applications with high air pressures. Good penetration rates an resistance to steel wash.
B:Insert Carbide Button shape Selection
Different button is ideal for different ground conditions, abrasive levels, PSIs and penetration levels. In general, the more of gauge buttons, the better over performance, especially in hard rock.
Spherical
Ballistic Button
Semi-ballistic
Wedged (Conical) Button
Features of Nickel-alloy steel drill bits:
1) Reliability
The piston of DTH Hammer uses the special (imported) high nickel alloy steel, with advanced heat treatment as military industry standard.
Strengthening processing on hammer surface for higher were-resistance.
2)Suitability
Specially designed drill bits for middle soft and hard rock formations. Easily disassembly thread for easy maintenance.
3) Efficiency
Extra-short structure design DTH hammer and bit for great efficiency of high impact energy transmission, with high impact power and fast drilling rate.
Hammer and bit design are optimized by computer simulation, with best air distribution chamber and air tightness design.
Our DTH bits are widely used for produce large-diameter holes in rocks for water-well drilling, tunnels, mineral exploration, geothermal drilling, subway engineering drilling. quarrying and roads, power stations, and other construction projects. it is suitable for very hard and abrasive rock formation, medium-hard and homogeneous formation. soft rock and fissured rock formations etc.
Our factory also can supply you with high pressure and medium to low pressure DTH hammers. It strictly matches with API standard and other Chinese industry standards. It is durable for being produced with advanced craftwork and good material.
Design Principles and Advantages of our Products:
1. According to the newest rock drilling theory to design our DTH hammer for deliver maximum energy to drilling bit and ensure high drilling rate.
2. High quality alloy steel materials and advanced processing technology ensure smooth operation ,reliability and longer service life.
3. The simple structure of our DTH hammer ensure low problem rate and easy operation&maintenance.
4. The drilling speed is 15%-30% higher than other brands.
3.After-sale services:
1. How to order the products?
A: Send the inquiry with detail item description or with Model number.
2. How about the common packing?
A: If there is no packing demand, we will take it as sea-way packing.
3. Can I expect a quality products?
A: Yes. All our activities are accredited to ISO 9001:2008 and API, both in products and services, at the same
time, mature production technology ensuring the quality satisfy international request.
4. How to check the product are the exact one you want?
A: If possible, please attach one reference picture to avoid any misunderstanding or any links from our
website for we get a better understanding.
5. How to control quality?
A: We have our own experienced QC team,there will be strict inspection and testing for every order before shipping out.
6. Fast delivery time:
A: Usually it takes 25 days for production.only 2 or 3 days if we have stock of your request size.
7. Shipping way:
A: Sample order: we suggest Courier express like DHL/UPS/TNT/FEDEX or by air
Bulk order: we suggest by air or by sea.
8. Competitive price:
A: Propower factory can give the lowest price due to direct sale to customers without distributor!
Whatsapp: +8615700744556
Email: propowerdrills (at) aliyun.com