... ,granularity is 10-60 mesh;it shows good welding performances:stable arc, fine appearance of weld,slag ... ,e.g.H10Mn2,etc,it is used for welding steel structures,such as boilers,pressure vessels,bridges ... ,oilcans,ships and so on.· ATTENTION : a.Before welding,the welding flux should be baked at the temperature from ... 350°C for 1-2 hours .b.Before welding,the weld metal must be cleared away impurities, ...