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The seawater desalination methods used include seawater freezing method, electrodialysis method, distillation method, reverse osmosis method, and ammonium carbonate ion exchange method. Currently, the application of reverse osmosis membrane method and distillation method is the mainstream in the market. There are high requirements for the material and anti-corrosion performance of stainless steel and corrosion-resistant alloy seamless pipes.
Main application specifications and materials:
1. Yongshang Special Material CB/T4154-2011S30408 (304L, 316, 316L) 06Cr19Ni10 Φ 6~406mm
2. Yongshang Special Materials GB/T21833-2008S21953, 22253, 23043, 22053, 25554, etc., with a diameter of 10~406mm
3. Yongshang Special Materials ASTM789, 790S31803, 32750, 32760, 32001, 32003, with a diameter of 6x~406mm
Main processing techniques:
1. Select high-quality forging billets and continuous casting billets (Baosteel, Taiyuan Iron and Steel, Yongxing, recommended 254 material) for perforation
2. Pipe damage detection, acid washing inspection, polishing, cold rolling/pulling
3. Degreasing, solidification, acid washing
4. Degreasing, solidification, acid pickling and passivation NDT, Water pressure, air tightness test, crystal corrosion test, physical and chemical inspection.