(1) To select the appropriate
specifications;
(2) The opening of the clamp head is equal to the diameter of the workpiece;
(3) The clamp head should clamp the work piece and then force it to prevent
slipping;
(4) With the boosting rod, the length should be appropriate. Move the handle,
note bearing torque, not excessive force, to prevent overload damage;
(5) To keep the teeth and the adjusting ring clean;
(6) It generally cannot be used as a pipe wrench hammer;
(7) The workpiece can not hold temperature more than 300 degrees celsius