Abstract: Splice welding and repair welding are always necessary in manufacturing process of 2205-Q345R clad plate with explosive welding.Experimental investigation on splice welding of duplex stainless steel plate 2205 and repair welding of 2205-Q345R clad plate was carried out according to weldability of 2205-Q345R clad plate.The test results indicate that performance of the weld joint meets norms associated.