Precautions for pickling of high-pressure pipe joints

Precautions for pickling of high-pressure pipe joints:

(1) the welding work of the pipeline has been completed before pickling;

(2) When disassembling, transporting and pickling, be careful not to touch the pipeline, thread and sealing surface, and block and seal with adhesive tape or plastic pipe;

(3) before pickling, the welding slag, spatter and varnish on the pipe should be cleaned up;

(4) each thread part should be protected by acid-resistant materials such as plastic tape and rubber tape, or dry oil should be coated on the thread after degreasing and washing, and then rust should be removed from the acid solution to prevent acid erosion;

(5) Be careful not to make the matching mark of the pipe disappear or blur during pickling.