This paper introduces the definition and reference standard of surface treatment of steel valve before spraying, the international general surface treatment standard ISO 8501, SIS 055900, DS 2019, GB 8923-88, DIN 5592...This paper introduces the definition and reference standard of surface treatment of steel valve before spraying, the international general surface treatment standard ISO 8501, SIS 055900, DS 2019, GB 8923-88, DIN 55928, the American standard SSPC/NACE for surface treatment;Carbon steel valves are of the same material as steel in the above standard, so the quoted surface treatment standard, sand blasting method and rating, and metal abrasive for jet cleaning all meet the above standard. The requirements of ISO 12944-2018 for surface treatment of base materials, introducing the corrosion grade of ISO 8501-1. Metal abrasive for jet cleaning: steel grit specification, steel shot specification, steel wire shot cutting.展开更多
Introduction The amount of the total dissolved salts(TDS)in most of the salt brines on northern Tibet is relatively lower.So the effective brine concentration technique is needed for lithium,boron and potassium extrac...Introduction The amount of the total dissolved salts(TDS)in most of the salt brines on northern Tibet is relatively lower.So the effective brine concentration technique is needed for lithium,boron and potassium extraction from these brine展开更多
文摘This paper introduces the definition and reference standard of surface treatment of steel valve before spraying, the international general surface treatment standard ISO 8501, SIS 055900, DS 2019, GB 8923-88, DIN 55928, the American standard SSPC/NACE for surface treatment;Carbon steel valves are of the same material as steel in the above standard, so the quoted surface treatment standard, sand blasting method and rating, and metal abrasive for jet cleaning all meet the above standard. The requirements of ISO 12944-2018 for surface treatment of base materials, introducing the corrosion grade of ISO 8501-1. Metal abrasive for jet cleaning: steel grit specification, steel shot specification, steel wire shot cutting.
基金Financial support from the opening fund of MLR Key Laboratory of Saline Lake Resources and Environments (2010-SYS-07)China Geological Survey (1212011085523)
文摘Introduction The amount of the total dissolved salts(TDS)in most of the salt brines on northern Tibet is relatively lower.So the effective brine concentration technique is needed for lithium,boron and potassium extraction from these brine
