Product name: 139mm recycle ring bit casing drilling system for engineering

Product category: Overburden casing ring bit

Matched hammer: Hammer DHD340

Matched casing pipe OD: 139mm

Recycle ring bit casing drilling system working principle:

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. Drilling continues to the desired depth in the bedrock using a conventional drilling.

Order guide: Casing Tube OD & ID + Reamer Bit Diameter + Minimal Casing Shoe ID + Hammer Shank Style

Kingdrilling Service

1. Pre-sale service:

If demand, assist clients to get rich and generous returns on their investments.Select DTH tools model.Design and manufacture down the hole products according to client's requirement.

2. Services during the sale:

Assist clients to draft solving plans.

Pre-check and accept Rock drill products ahead of delivery .

3. After-sale services:

Our sales team will response for your question within 24 hours (Holidays Excluded)

Technical Support will be available in any time.

Free replacement can be provided once the failure confirmed caused by our product quality.

FAQ:

1. What is hole hammer?

Pneumatic down-the-hole (DTH) hammer is a pneumatic drilling tool using compressed air as a power source. It is suitable for drilling in pebble, gravel, and hard rock strata. It is often used in building pile foundation construction, bridge, mining, geological exploration, hydrological wells, and other fields.

2. What is overburden fill?

Overburden Soil is a general, unprocessed, fill material that can contain a variety of different materials, depending on where it is sourced. Overburden Soil can contain sand, rocks, clay and stones, and will typically lack the organic material and nutrients found in topsoil.

3. How far can you directional bore?

What are the minimum and maximum lengths of crossing? Maximum lengths and hole diameters are determined by project specific geotechnical conditions however effective outside range for heavy rig horizontal directional drilling is 3,000 m

MORE INFORMATION:

Wuhan Kingdrilling Diamond CO., LTD, located in Wuhan East Lake High-tech Development Zone, is one of the most professional private enterprise specialized in researching and producing ODEX casing drilling system, symmetric casing drilling system, DTH hammer, DTH drill bits, Thread bits, Shank adapter, Drilling rods, Coal mining tools, Coupling sleeve, Anchoring and so on.

Relying on the university resources and talent advantages in Optical Valley region, combining with multiple laboratories in universities, we focused on developing the newest products system.

We produce DTH drilling tools with advanced technology from Britain, a completed manufacturing system has been formed in plant. The company is equipped with advanced production facilities including electron-hydraulic forging hammer, multipurpose furnace heat treatment production line, high performance CNC machines, all processes from raw materials prepared, forging, heat treatment, metal processing are completed in the factory. Strict quality control standards make sure stable quality.

Whatever in construction, engineering, piling, waterwell drilling, tunnelling, mining, quarrying or horizontal drilling industry. KINGDRILLING will always do the best to meet your demands. "Kingdrilling, Keep On Striving",  we’ll always be in this line to serve our customers the most reliable products and the best support.