According to the characteristics of electric arc sp raying technology and abrasion of boiler piping,a fluxcored wire SMD 45 for el ectric arc spraying is developedThe experimental results show that the surface hardness of the coating reaches 60～65 HR and the adhesive strength between the coating and base is 23～28 MPaThe wearability of the coating sprayed by the w ire is 5 times than that of ordinary steel pipeApplying the wire to the heated surface,the life of the economizer pipe is doubly increasedNo local desquamat ion,rust and abrasion can be examined during more than one years service