What kind of stratum is suitable for rotary digging pile?
Core auger bit is suitable for crushed stone soil, medium hardness rock and weathered rock formation. Core rotary bucket, applicable to weathered rock and cracked rock.
Short spiral drilling tools are applicable to cohesive soil, silt, earth fill, moderately dense sand and weathered rock formations above the water table.
Construction, according to different soil and geological conditions, according to the following provisions choose different drill bits:
