(1) Inspection and acceptance of equipment and pipe piles;
(2) Surveying and setting out: the allowable deviation of pile position is 20 mm; axis control points and elevation points must be far enough from the construction site and subject to regular rechecking;
(3) All obstacles below the pile positions must be completely removed to prevent the pile positions from being displaced during pile pressing;
(4) Pipe piles must be lifted in accordance with standard procedures to prevent damage to the pile body;
(5) Theodolites must be positioned at least 20 m away from the pile driver, with two theodolites set up perpendicular to each other;
(6) Joint welds must be full three-pass welds, and the performance of welding electrodes must meet the material requirements;
(7) Joint welds must be allowed to cool naturally for more than 1 min before pressing;
(8) At the end of pressing, the pile length and pressure must meet the design requirements;
(9) Reasonably arrange the piling sequence to prevent excessive pile position deviation caused by one-directional soil squeezing;
(10) Reasonably control the number of piles driven per day to reduce local soil heave;
(11) Strictly control the pile top elevation, and at the same time the influence of soil heave on the pile top elevation must be taken into account;
(12) The verticality of the pile body shall be less than 0.5%.