Tubular carbon fiber reinforced composite material and golf club shaft

A tubular carbon fiber reinforced composite material obtained by laminating a straight layer comprises a thermosetting resin 5, in which a carbon fiber S coated with a sizing agent S is arranged in parallel with a direction of −20° to +20° with respect to the tube axis of a tubular body, and

• a bias layer comprising a thermosetting resin B, in which a carbon fiber B coated with a sizing agent B is arranged in parallel with a direction of +25° to +65° with respect to the tube axis of a tubular body, and
• the carbon fiber B and the sizing agent B satisfy at least below either (i) or (ii), and
• the interlaminar shear strength of the carbon fiber reinforced composite material constituting the bias layer is 110 MPa or more, and the elastic modulus of a cured product of the thermosetting resin S is 4.0 GPa or more.
• (i) the carbon fiber B is obtained by coating with the sizing agent B a carbon fiber in which the surface oxygen concentration (0/C) determined by X-ray photoelectron spectroscopy is 0.25 or less, the surface hydroxyl group concentration (COH/C) determined by chemical modification X-ray photoelectron spectroscopy is 0.005 or more, and the surface carboxyl group concentration (COOH/C) determined by chemical modification X-ray photoelectron spectroscopy is 0.01 or less.
• (ii) the sizing agent B contains an aliphatic epoxy resin.