First, the seamless steel tube is processed into a casing, the length of which is about 1/3 of the anchor bolt, and the diameter is about 6-8 times of the bolt. One end of the casing is covered with a steel ring, and the outer diameter of the steel ring is equal to the outer diameter of the casing. The inner diameter is approximately equal to the diameter of the anchor bolt, and then the sleeve is inserted into the anchor bolt. The steel ring at the bottom of the sleeve is welded with the bolt, and the upper end of the sleeve is to be perpendicular to the center line of the anchor bolt, and the anchor bolt is simultaneously To be higher than the upper end of the sleeve. (L=base height+equipment basic thickness+washer thickness+two nut thicknesses) Put the assembled anchor bolts into the reserved holes and lift the equipment base plate or associated equipment on the cement foundation and put it on the ground. Foot bolts, leveled with horn pads, and finally grouted.