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Application

The drilling buckets are designed specifically for drilling all types of soils below groundwater. 

For drilling in a varity of soil conditions revolving bottom gates can be supplied with different type of teeth. 

The opening of the  revolving bottom gate is facilicated by an automatic or manual tip mechanism. A ventilation pipe prevents the occurrence of vacuum when lifting the tool.

For large drilling diameters or for the use in uncased bores, buckets with double start head are recommended.

Feature

Single Soil Bucket, used for cutting sand with fines, fine granined and organic soils like silty sands, sand-silt mixtures,clay sand and high medium plasticity clays and fat clay.

Double Soil Bucket, used for cutting soft to stiff and clay, loose to medium dense sand,gravel up to coarse gravel.

Conical clay bucket used for drilling in clay and sticky clay with high plasticity. Body provide with conical base shape for easy discharging of sticky clay.

Fishtail pilot bit / Round shank rock teeth pilot bit.

Cutting Dia

Normally 500mm to 3000mm, other avaliable upon request. like Φ950, Φ1050 etc...

Shell Height

Normally 1200mm / 1000mm/800mm, other avaliable upon request,prolong or shortten, increase of efficiency by drilling more.

Shell OD

Normally 420mm to 2920mm, other avaliable upon request, 

Shell Thickness

Normally 16/20mm, other avaliable upon request.

Fixed Bottom Thickness

Normally 40mm / 50mm, other avaliable upon request.

Rotate Bottom Thickness

Normally 40/50mm, other avaliable upon request.

Teeth

Flat teeth equip with V20/FZ72/FZ80/22S/TL18/25T,other avaliable upon request

Kelly box

Normally 130*130/150*150/200*200mm, other avaliable upon request,prolong or shortten.

Trade & Payment terms

Trade terms: We offer EXW/FOB/CIF/CIP/DDP... port price.

Payment terms: 100% T/T as confirm order.

Warranty & After-sale Service

ONE year since manufacture date for Kelly bar, 3 months for Drilling tools. Out-of-warranty, online video for trouble-shooting or paid maintenance service with engineers sent to be abroad.

Why you choose us?

1. Seasoned R&D and Manufacturing Terms

With 15 years of professional experience in Kelly bar design and manufacturing. KR Drilling is capable of providing overall construction solutions and designing customized high quality Kelly bar based on various drilling conditions that the customers encounter.

2. Top Quality Raw Materials

The raw materials o f steel pipes we use are supplied by the best manufactures in China with CE certifications. Our Kelly bars are made of high strength alloy-steel tubes with high torsional and compressive strength which will meet the strict requirements for drilling in hard formations.

3. More Life Out of our Wear Parts

The key components such as drive keys, locking recesses are made of high strength and wear-resistant materials with special heat-treatment that would help to improve the life of these parts. The internal drive keys are made of high strength and wear-resistant steel plate. These welded components also undergo special heat treatments. It not only improves the drive keys wear resistant properties, but also the welding properties.