Rotary digging pile is more and more big, reportedly design of existing pile diameter 6.3 meters, ningbo six cross island project, should want to go to the mountains and 1280 1600 and xugong.The drilling rig is also getting deeper and deeper, our 550 drilling rig with 6 24 meters friction rod can dr Read More

Today, let's talk about rotary drilling tools: twist drill.Speaking of auger, are not unfamiliar, not on the ground!Do a few years of leasing, no construction experience, see a lot of sites, see auger, are playing soil.To be honest, a recent special investigation has dispelled the erroneous view tha Read More