Winter maintenance of rotary drilling rig is very important, then in the cold winter rotary drilling rig need what special attention protection?First of all, the rotary drilling rig should be checked before starting, whether the protection of oil antifreeze is suitable for winter use Read More

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