1. Cracks appear in the weld and the connection with the parent body.

2. There are pores or inclusions.

3. There are blowholes after welding

All the above three are possible causes of leakage. In this case, it is necessary to deal with the welded joint of the water seepage part in time and open the leakage part by mechanical grinding. If it is a crack, it needs to be removed. If it is air hole inclusion, remove the defect, and then use the appropriate welding material for the second welding repair.

Welding repair can be divided into water repair and waterless repair. In the case of repairing with water, from the point of view of safety and success rate, it is best to use underwater covered electrode welding of BROCO, USA. WEWELDING600 covered electrode can be used for repair without water, and covered electrode has good crack resistance.