No Clamping Mark Hydraulic Bucking Unit

We are engaged in manufacturing and exporting an excellent quality No Clamping Mark Hydraulic Bucking Unit in Huludao, Liaoning, China to our valuable clients. This series screw-on machine without clamp mark is the renewal product for die clamping type screw-on machine. At present, all the screw-on machines produced by domestic manufacturers use die for clamping pipe body, coupling, rotating, make-up and break-out of pipe thread, and improved products just adopt fin thread or address the problem of back-up tong without clamp mark. However, since butt clamp is adopted, pipe body is subject to deformation and thus present elliptic shape, and there are clamp marks on the positions clamped by the main tong, it is necessary to repair dog mark. Such machine may be used in some units having relatively low requirement at home. However, in foreign countries, external surfaces of new oil pipe, new casing and oil-well pump are not allowed to have clamp mark.