Patent ID: 7171988

Claim:
A tubing for hydrostatic forming, comprising: a first circumferential end portion; a second circumferential end portion: an overlap portion formed by the first and second circumferential end portions overlapping and joined with each other, the second circumferential end portion being overlaid on the first circumferential end portion; a fluid leakage preventing member for preventing pressurized fluid from leaking from the tubing upon the tubing being subjected to hydrostatic forming; first and second longitudinal end portions opposed to each other in a longitudinal direction of the tubing, wherein the fluid leakage preventing member comprises first and second fluid leakage preventing members disposed adjacent to the overlap portion in a circumferential direction of the tubing, wherein the first fluid leakage preventing member is disposed only on an inside of the first longitudinal end portion and the second fluid leakage preventing member is disposed only on an inside of the second longitudinal end portion.