Retrievable Symmetrix Casing System Reaming Drilling Bit ODEX Concentric Casing System Drill Bit
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- Supplier: Quzhou Sanrock Heavy Industry Machinery Co. Ltd.
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Product Overview
Description
Retrievable Symmetrix Casing System Reaming Drilling Bit ODEX Concentric Casing System Drill Bit
1. Ring bit and casing shoe assembly is welded to casing prior to drilling. Lock the assembly into pilot bit with hammer. The pilot bit's upper shoulder engages the shoulder of the casing shoe.
2. Hammer's percussive energy is transferred through the pilot and ring bits, crushing rock . Part of impact energy advances casing.
3. On completion of drilling and casing , the drill string with pilot bit is retrieved by a slight reverse rotation to unlock the bayonet coupling . The ring bit stays in the hole , and can be recovered only if the casing is retrieved
4.If further drilling is required on the bedrock,the pilot bit is simply repiaced by an appropriate size of standard DTH bit.
1. Ring bit and casing shoe assembly is welded to casing prior to drilling. Lock the assembly into pilot bit with hammer. The pilot bit's upper shoulder engages the shoulder of the casing shoe.
2. Hammer's percussive energy is transferred through the pilot and ring bits, crushing rock . Part of impact energy advances casing.
3. On completion of drilling and casing , the drill string with pilot bit is retrieved by a slight reverse rotation to unlock the bayonet coupling . The ring bit stays in the hole , and can be recovered only if the casing is retrieved
4.If further drilling is required on the bedrock,the pilot bit is simply repiaced by an appropriate size of standard DTH bit.
It is suitable for drilling water wells , geothermal wells , short miscopies ,medium mini-type grouting hole of building , dam and harbor project .
The Symmetric/Concentric drilling system is designed to drill and case a hole simultaneously through unstable ground conditions. The driver bit incorporated with a satisficial ring or reusable ring makes a full face head design which significantly improves the penetration rate and hole straightness of drilling. The internal flushing grooves together with the built-in casing shoes gives a good seal to the button of the drilling hole, and thus minimizing the disruption of the surrounding of the drill hole.
The Symmetric/Concentric drilling system is designed to drill and case a hole simultaneously through unstable ground conditions. The driver bit incorporated with a satisficial ring or reusable ring makes a full face head design which significantly improves the penetration rate and hole straightness of drilling. The internal flushing grooves together with the built-in casing shoes gives a good seal to the button of the drilling hole, and thus minimizing the disruption of the surrounding of the drill hole.
Products Description
Product name:Concentric Casing system | ||||||||
Type:Concentric Casing System with Sliding Blocks | ||||||||
Applicable Industries:Coal Mining,Quarry drilling ,Construction works , Water well,etc. | ||||||||
Formation:Soft,Medium and Hard Formation | ||||||||
Casing Tube O.D: 194 mm | ||||||||
Bit Diameter{Button lncluded} :178mm | ||||||||
Casing Shoe I.D:164mm | ||||||||
Maximum Reaming O.D :208mm | ||||||||
Hammer Styie: 6 inch | ||||||||
Machine Type:Drilling Equipment | ||||||||
Company Profile
1.what can you buy from us?
DTH drilling rig,water well drilling rig,truck mounted water well drilling rig,screw air compressor,piston air compressor,pneumatic rock drill ,drill bit,Tricone bit ,DTH hammer,drill rod,spare parts
2.How can I make payment?
A: You can pay directly online on Alibaba with credit card, or TT, Western Union, LC etc.
3. How is the shipment? How long dose it take?
A: For large quantity or heavy products, we ship by sea shipping or land shipping. Shipping efficiency depends on country and city you want to ship to. For small and delicate products, we ship by DHL, UPS, Fedex or TNT.You can also appoint shipping method you like before we ship.
4.How is your quality control? A: We have our own experienced QC.There will be strict inspection and testing for every order before shipping out.
5.Do you have any certificate of authorization? A: Our machinery is CE certified.
DTH drilling rig,water well drilling rig,truck mounted water well drilling rig,screw air compressor,piston air compressor,pneumatic rock drill ,drill bit,Tricone bit ,DTH hammer,drill rod,spare parts
2.How can I make payment?
A: You can pay directly online on Alibaba with credit card, or TT, Western Union, LC etc.
3. How is the shipment? How long dose it take?
A: For large quantity or heavy products, we ship by sea shipping or land shipping. Shipping efficiency depends on country and city you want to ship to. For small and delicate products, we ship by DHL, UPS, Fedex or TNT.You can also appoint shipping method you like before we ship.
4.How is your quality control? A: We have our own experienced QC.There will be strict inspection and testing for every order before shipping out.
5.Do you have any certificate of authorization? A: Our machinery is CE certified.
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