... make roughneck applied idealized in land and small marine drilling work. The roughneck is designed and produced according to ... strike, long service life and less mobile wear.Four-part clamping design equips tong tooth increases the clamping area, ... excavators, bulldozers, rollers, loaders, graders, forklifts, special vehicles, oilfield equipment, etc. As our business is growing, our company has become ...