Interlocking Kelly bars are used with piling rigs for drilling in dense sand and gravel and weak to strong rock. The Interlocking Kelly bars manufactured by KR can be fully locked by mechanical locking system on each section. Kelly bars can be equipped with specially designed springs or pressure plates for shock absorbing purpose.

Friction Kelly bar is another type of kelly bar, which the external key is composed of 3 or 6 wear -resistant strips without lock recesses. This kelly bar can form pressure force when the kelly bar is rotary. can produce peripheral force and the rotary passing down the pressure force, can produce the friction force. This kelly bar has the advantage of operating sample, drilling deep, but with less pressure transmission.

Usually full lock kelly bar is composed of three weld-on ribs continuous concave and convex keys. It especillay for hard ground and frozen oil formation layer.When drilling process, the advantage is force uniform, not easy to stick pipe, particular to improve work efficiency.

Usually Customized kelly bar is formed by Interlocking kelly bar pipe, Friction kelly bar pipe, Full lock ribs kelly bar pipe or other mix-lock types based on your specific projects complicated formation needs.

Casing is one of most important and commonly used equipment in deep foundation work. It is widely used in deep foundation/bored pile/drill shaft/pillar construction work to protect the shaft work safety.
KR Drill supplies a full range of Casings, Casing joints, Casing shoes, and accessories designed to meet the rigorous demands of fully cased pile boring for large diameter and deep foundations in the most difficult soil conditions including hard rock an other complicated geological environments.

Feature
Optimal rotation characteristics;
Fully welded solid wall connection between male joint section and cutting ring;
Increased wear protection optionally available in the form of vertical wear plates;
Cutting ring can be removed and replaced when necessary;
With increased operational demands and for long drilling tools;
use of the long version of the casing shoe is recommended as the most intense strain occurs on the inner surfaceofthe casing shoe in the area of drilling tool action. At this point, the solid-walled construction of the casing shoeensures a long ensures a long;
Casing shoes can be fitted with WS tooth holders (WS 39) or weld-on teeth type BR or BH (other types of teeth areavailableon request).

KR product a variety of casing tools such as double wall casing tube, single wall casing tube, casing twister, casing shoes for rotary drill rigs of Bauer, Soilmec, Casagrande, MAIT, IMT, SANY,JUNTAI etc.

Feature
Option half-automatic or manul mechanic bottom open system. Buit-in ventilation pipe;
Cast pilot with rock drilling bits , arc guide plate teeth arrangement, double unlocking system;
Staggered arrangement of rock drilling bits;
Applicable layers: gravel , pebble , highly or medium weathered rock;

Customizable Items
Cutting DIA. Custom : design various cutting diameter based on demand, such us 0950?01050 etc.
Shell HlT. Custom : design as demand, prolong or shortten, increase amount of per drilling, improve efficiency.
Small barrel facilitates the coring operation; large barrel performs stage breaking;
Cutter Custom: single cutter and double cutter design as demand;
Kelly Box Custom : custom kelly box size based on the kelly bar, like 130*130, 150*150,200*200 etc;
Bottom Open Mechanic : half-automatic or manul mechanic bottom open system.

Feature

Design as straight type, better for carry soil.

Double cutter bearing uniform force, can avoid inclined hole.

Double spiral easy to carry soil, but meet cohensive soil, single spiral is easy to dump spoil..

Applicable layers: clay, high-weathered layer, gravel etc.

Customizable ltems

Cutting DIA. Custom : design various cutting diameter based on demand, such us 950?1050 etc.

Spiral HIT. Custom : design as demand, prolong or shortten, increase amount of per drilling, improve eficiency.

Spiral Pitch Custom : adjust the spiral pitch according to different working condition.

Teeth Custom : equiped different teeth, like bullet teeth, flat teeth according to different working condition.

Key Component Reinforce Custom : strengthen the key component to extend life cycle.

Kelly Box Custom : custom kelly box size based on the kelly bar, such us 130*130, 150*150,200*200 etc.

1. High quality advanced quality testing equipment

2. Green environmental protection

3. High strength precoated sand ensures dimensional stability of the inner cavity

4. Excellent raw material

5. Professional technical team

6. Intelligent units: core making smelting,modelling,post-processing and processing

7. HWS/Sinto/Disa Molding line casting

8. Material gray iron and ductile iron of all grade12

The Accurate Braking High Efficiency Electrical Motors with ISO9001 are top-quality products designed for industrial applications that demand high performance and reliability. These motors are built to provide accurate braking with high efficiency, making them ideal for applications that require precise control.

The ISO9001 certification guarantees that these motors meet the highest quality standards for manufacturing processes, ensuring their reliability and durability. Their efficient design also ensures that they deliver significant energy savings, reducing the overall operating costs of industrial processes.

Feature
Option prolong straight bucket shell can avoid drilling hole inclined.
Choosing conical shell type can accelerate dumping, increase of efficiency.
Ventilation pipe shaft inside prevents vacuum; add collar plate according to working conditions.
Applicable scope: silt, gravel, clay and highly weathered rock.

Customizable ltems
Cutting DIA. Custom : design various cutting diameter based on demand, like 0950?01050 etc.
Shell HlT. Custom : design as demand, prolong or shortten, increase amount of per drilling, improve eficiency.
Small barrel facilitates the coring operation; large barrel performs stage breaking.
Cutter Custom: single cutter and double cutter design as demand.
Bottom Custom : single bottom and double bottom design as demand.
Kelly Box Custom : custom kelly box size based on the kelly bar, such us 130*130, 150*150,200*200 etc.
Bottom Open Mechanic : half-automatic or manul mechanic bottom open system.
Flat Teeth Custom : equip with V20, FZ80, FZ72,22S, TL18,TL25, etc, as working condition demand.

Feature

Cutting ring with rock drilling bits and releases the internal stress of rock.

Rock drilling bits perform stage breaking and drilling .

Small barrel facilitates the coring operation; large barrel performs stage breaking.

Applicable layers: backfill layer, medium weathered rock, bedrock.

Customizable Items

Cutting DIA. Custom : design various cutting diameter based on demand, like 950?1050 etc.

Custom : design as demand, prolong or shortten, increase amount of per drilling, improve eficiency.

Small barrel facilitates the coring operation; large barrel performs stage breaking;.

Kelly Box Custom : custom kelly box size based on the kelly bar, like 130*130, 150*150.200*200 etc,

Teeth No. Custom : encrypt the drilling teeth based on demand etc.

Feature

Cutting ring with rock drilling bits and releases the internal stress of rock.

Drilling with the method of rolling and squeezing can increases the anti-wear ability of the barre.

Small barrel facilitates the coring operation; large barrel performs stage breaking.

Applicable layers: medium or slightly weathered rock, hard or superhard bedrock.

Customizable ltems

Cutting DIA. Custom : design various cutting diameter based on demand, such us 950?1050 etc.

Shell HIT. Custom : design as demand, prolong or shortten, increase amount of per drilling, improve efficiency.

Small barrel facilitates the coring operation; large barrel performs stage breaking.

Kelly Box Custom : custom kelly box size based on the kelly bar, such us 130*130, 150*150,200*200 etc.

Teeth No. Custom : encrypt the drilling teeth based on demand etc.

Roller Bits Custom: new roller bits, used roller bits and detachable roller bit design as demand.

Feature

Large inlet of soil, open shell design, easy to dump spoil so increases the drilling efficiency.

Super strength structure for shell, guide plate, etc, increase the life cycle of bucket.

Guide strips arranged on the surface of bucket can avoid drilling tool sucked by the pressure.

Applicable layers: clay ,silt,highly weathered rock.

Customizable Items

Cutting DIA. Custom : design various cutting diameter based on demand,lsuch us 950?1050 etc.

Teeth Custom : equiped different teeth, like bullet teeth, flat teeth according to diferent working condition.

Kelly Box Custom : custom kelly box size based on the kelly bar, such us 130*130, 150*150,200*200 etc.

Feature

Location by pilot, conical structure drilling into the rock.

Double cutter bearing uniform force, can avoid inclined hole.

Double spiral easy to carry soil, but meet cohensive soil, single spiral is easy to dump spoil.

Applicable layers:medium weathered rock,bedroc.

Customizable ltems

Cutting DIA.Custom : design various cutting diameter based on demand, such us 950?1050 etc.

Spiral HlT. Custom : design as demand, prolong or shortten, increase amount of per drilling, improve eficiency.

Spiral Pitch Custom : adjust the spiral pitch according to different working condition.

Kelly Box Custom : custom kelly box size based on the kelly bar, such us 130*130, 150*150,200*200 etc.

Key Component Reinforce Custom : strengthen the key component to extend life cycle.

Feature
Choose conical or straight bucket according to different working conditions;
Choose straight guide plate or no guide plate according to different working conditions;
Applicable scope: cleaning spoil at pile bottom, soft layer.

Customizable items
Cutting DIA. Custom : design various cutting diameter based on demand, such us 950?1050 etc;
Shell HIT. Custom : design as demand, prolong or shortten, increase of efficiency by cleaning more;
Bottom Custom : single bottom and double bottom design as demand;
Kelly Box Custom :custom kelly box size based on the kelly bar, such us 130*130, 150*150,200*200 etc;
Bottom Open Mechanic : half-automatic or manul mechanic bottom open system.

Feature
Adjustable cutting arms can meet the specific requirements of different reaming diameters;
After reaming the bore hole, convey spoil with drilling bucket or cleaning bucket;
Cutting arms are easy to spread and retract; box-type structure is easy to maintenance;
Applicable layers: hard stratum, frozen soil and medium soft rock.

Customizable ltems
Model DIA. Custom : design various cutting diameter based on demand, such us 950?1050 etc;
Key Component Reinforce Custom : strengthen the key component to extend life cycle;
Kelly Box Custom : custom kelly box size based on the kelly bar, such us 130*130, 150*150,200*200 etc;
Swing No. Custom : double swing or trible swing design as demand;
Limit Hole No. Custom : add more limit hole to satisfy different reaming diameter demand.