... Penetration,0.lmm288GB/T269Oil separation ( 1000C,24h),%1SH/T0324Evaporation(1500C,1h),%0.22GB/T7325Corrosion(T2Copper Sheet,1000C ,24h)QualifiedGB/T7326,Second ... MethodCorrosion Preventive Property(520C,48h ),Grade1GB/T5018Water Washout Losses( 380C,1h ), %2.1SH/T0109Oxidation Stability(990C,100h,0.760MPa)Differential Pressure ...