CS seamless pipe refers to a steel pipe that is perforated by the whole round steel and has no weld seam on the surface. CS seamless pipe has a size of schedule 40 pipe. Mainly used as petroleum geological drilling pipes, octg casing, cracking pipes for petrochemical industry, boiler pipes, bearing pipes and high-precision structural steel pipes for automobiles, tractors and aviation. The pickling step is used in the processing of cs seamless pipes, and water washing is usually required after pickling
What should be paid attention to in cs seamless washing?
1) When cs seamless steel pipe is washed with water, it needs to be carried out in a flowing clear water tank, so as to avoid secondary pollution. When washing, the cs seamless steel pipe needs to be completely immersed in water. At this time, the sling should be loosened, and it can be lifted up and down three to four times;
2) When cs seamless steel pipe is washed with water, it is necessary to clean the water in the steel pipe to avoid water corrosion and steel pipe oxidation, so it is very necessary to treat the solvent as soon as possible;
3) When the cs seamless steel pipe is washed with water, it should be noted that it cannot cross the pickling tank to avoid accidents, slipping or falling into the acid tank and being corroded by residual hydrochloric acid;
4) When the cs seamless steel pipe is washed with water, the iron salt content standard must be controlled within a certain range, and it cannot exceed the standard, otherwise the cs seamless steel pipe may be damaged.
The pickling of cs seamless pipe is to remove the surface scale, and then it is lubricated and then drawn for further processing. If the cs seamless pipe is not pickled, there may be oxides and oil stains on the surface, and the phosphating solution may not be able to remove them, and the phosphating quality will be reduced. Moreover, in the manufacturing process of cs seamless pipe, after many processes, if you do not pay attention to it, it will leave scars on the surface of the seamless pipe, which will reduce the corrosion resistance of parts and directly affect the service life. After pickling, a protective film will be formed on the surface of the cs seamless pipe, which improves the corrosion resistance of the cs seamless pipe.