JIS G3461 STB 510 steel pipe process flow: Tube blank-inspection-peeling-inspection-heating-perforation-pickling-grinding-lubrication and air drying-welding head-cold drawing-solution treatment-pickling-pickling Passivation-inspection-cold rolling-degreasing-cutting-air drying-internal polishing-external polishing-inspection-marking-finished product packaging
In fact, degreasing is not a complicated process, but it takes time. In the case of JIS G3461 STB 510 steel pipe, the oil removal time is relatively short, about 24 hours.
However, in a short time, the JIS G3461 STB 510 steel pipe cannot be quickly polished after degreasing, because if it is operated forcibly in a short time, the oil in the JIS G3461 STB 510 steel pipe will not be completely removed.
Second, the dirty grease will remain on the wall of the JIS G3461 STB 510 steel pipe, and it cannot be washed away when rinsed with water.
Third, the grease that cannot be washed away will adhere to the polishing plate during internal polishing, and the polishing plate is not clean and the polishing is not thorough. More importantly, there will be a large amount of residual grease inside the polished JIS G3461 STB 510 steel pipe.
