Abstract: Apparatus for removing residual contaminates from a section of pipe used in gas lines. The apparatus includes a frame and a cradle mounted on the frame for holding a section of pipe. The apparatus also includes a rigid rod moveably mounted on the frame for rotation about a centerline of the pipe when held by the cradle and for translation toward and away from the pipe. In addition, the apparatus includes a brush mounted on the rod for rotation and translation through the section of pipe when held by the cradle to dislodge residual contaminates inside the pipe.

Abstract: A gauge device has an insert portion having means for aligning the insert portion along a longitudinal axis of an oil drill pipe so that the squareness of a joint shoulder and shoulder available for grinding at a box end of an oil drill pipe can be determined. The insert portion has indicia formed thereon calibrated to read the shoulder available at the box end of said drill pipe. An indicator portion of the gauge device is slideable along the insert portion and has a radially directed annular flange extending perpendicular thereto and perpendicular to a longitudinal axis of the oil drill pipe upon insertion of the insert portion within the box end of said oil drill pipe. The squareness of the outer shoulder of the oil drill pipe can be directly visualized by reference to the annular flange of the indicator portion. Field grinding can then be performed on the box end of the oil drill pipe until a square shoulder is obtained.