China Single Wall Casing 1500mm with Screw Joint for Double Rotary Piling Work Used on Bauer Soilmec Drilling Rig, Find details about China Single Wall Casingd1500mm, Single Wall Casing with Screw Joint from Single Wall Casing 1500mm with Screw Joint for Double Rotary Piling Work Used on Bauer Soilmec Drilling Rig