For Rotary Drilling Buckets used for bored piles piling foundation construction, there are different types. Following we would like to introduction the two most commonly used: Rock Drilling Bucket, Soil Drilling Bucket. Rock drilling bucket with bullet teeth can be widely used for sand and gravel layer, pebble bed, flagstone, high strength of frozen soil, weathering rock and other complex hard strata bored piles drilling. While drilling bucket with flat teeth, eg, 18T, 25T, are suitable for water-bearing cohesive and non-cohesive soils, Clay, Silt, Loose to medium dense sand and gravel, up to coarse gravel. Following click each one and you'll see our detailed description: