PROBLEM TO BE SOLVED: To adopt a carbon injection pipe for reducing the entire weight concerning a spraying rod having an injection pipe where a base end side is straight and a tip side is bent and provided with a spraying nozzle where the relative positioning in the direction of the spraying is required in the tip of the injection pipe and the outer circumference of the base end side, respectively.SOLUTION: An injection pipe 2 is constituted of a bent pipe 2a provided with a male screw 6 at the tip, a straight pipe 2b, a joint 7 comprising a screw hole 7a and a male screw part 7b, and a lock sleeve 8 having a first socket part 8a, a second socket part 8b and a female screw part 8c. The bent pipe 2a and the straight pipe 2b are formed of carbon fiber reinforced plastic, the female screw part 8c of the lock sleeve 8 is pressed in the side face of the pipe having the screw hole 7a under the condition where the male screw part 7a is screwed into the screw hole 7a, and thereby it is configured to stop the relative rotation between the bent pipe 2a and the straight pipe 2b.SELECTED DRAWING: Figure 3
