At present, rotary drilling rig has become one of the mainstream construction machinery of bored pile because of its advanced technology, rapid and stable hole formation. Due to the various engineering geological conditions in different places, different engineering designs are unlikely to be comp Read More

Due to the complexity of construction technology, the final pile quality may be affected by various visible or invisible factors. In order to ensure the quality of the whole pile foundation engineering meets the design requirements, it is very important to prevent and deal with the common quality pr Read More