Mechanical Interlocking Kelly Bar Usually Have The Interlocking Kelly Bar Or Six Keys. There Are Three Large Groups Or N Groups Pressure Concave Parts In The External Key, Three Or Six Wear-resistant Keys In The Internal Keys. The Length Of The Bar ...Read More

DZ Kelly Bar Drilling Buckets Are Used For Drilling In Cohesive And Non-cohesive Soil Below The Groundwater Level, While The KBF Bucket Series Is Suitable For Breaking And Ripping Of Hard Soil Up To Medium Hard Rock. A Hinged Revolving Bottom Gate Ca ...Read More