... gas storage tanks are used sand-blasting treatment, spraying, blowing3.The welded joints, weld, tank head, the pressure components, the geometric location ... margin1.0mmNominal diameterDN80Volume50m3Openning pressure1.68-1.76 MpaHeat treatmentbulkRe-seating pressure≥80% of openning pressureFilling factor420kg/m3Handling SystemNorminal DiameterFeed pipDN80Material16MnRDrain pipDN80Hydraulic ...