A pipe joint connected with a connecting pipe through which a fluid flows, the pipe joint comprising: a pipe joint body formed with a male thread on an outer circumference, and formed with a first insertion hole into which the connecting pipe is fitted, and which comprises a first joining face joined with the connecting pipe; and a nut member formed with a female thread engaged with the male thread, and a second insertion hole into which the connecting pipe is fitted, and which comprises a second joining face joined with the connecting pipe, wherein the connecting pipe is formed with a bead expanded in a radial direction, the bead is held between the first joining face and the second joining face when the male thread of the pipe joint body is engaged with the female thread of the nut member, a joined portion between the bead and the first joining face forms a first sealed portion that suppresses a leakage of the fluid, and a joined portion between the bead and the second joining face forms a second sealed portion that suppresses a leakage of the fluid, and an end face of the pipe joint body is joined with a part of an inner circumference of the second insertion hole of the nut member to form a third sealed portion that suppresses a leakage of the fluid, characterized in that i) the end face of the pipe joint body is formed with a third joining face parallel to the second joining face of the nut member; and when the connecting pipe comprising the bead expanded in the radial direction and formed at an end of the connecting pipe is connected, the third sealed portion is formed upon joining of the third joining face with the second joining face of the second insertion hole; and/or ii) either one of the first insertion hole of the pipe joint body or the second insertion hole of the nut member comprises a straight hole face parallel to an axis of the pipe joint body; and when the connecting pipe comprising the bead expanded in the radial direction and formed at an end of the connecting pipe is connected, the bead is held between the first joining face and the second joining face, and is expanded in the radial direction so as to be joined with the straight hole face to form a fourth sealed portion that suppresses a leakage of the fluid. a pipe joint body formed with a male thread on an outer circumference, and formed with a first insertion hole into which the connecting pipe is fitted, and which comprises a first joining face joined with the connecting pipe; and a nut member formed with a female thread engaged with the male thread, and a second insertion hole into which the connecting pipe is fitted, and which comprises a second joining face joined with the connecting pipe, wherein the connecting pipe is formed with a bead expanded in a radial direction, the bead is held between the first joining face and the second joining face when the male thread of the pipe joint body is engaged with the female thread of the nut member, a joined portion between the bead and the first joining face forms a first sealed portion that suppresses a leakage of the fluid, and a joined portion between the bead and the second joining face forms a second sealed portion that suppresses a leakage of the fluid, and an end face of the pipe joint body is joined with a part of an inner circumference of the second insertion hole of the nut member to form a third sealed portion that suppresses a leakage of the fluid, characterized in that i) the end face of the pipe joint body is formed with a third joining face parallel to the second joining face of the nut member; and when the connecting pipe comprising the bead expanded in the radial direction and formed at an end of the connecting pipe is connected, the third sealed portion is formed upon joining of the third joining face with the second joining face of the second insertion hole; and/or ii) either one of the first insertion hole of the pipe joint body or the second insertion hole of the nut member comprises a straight hole face parallel to an axis of the pipe joint body; and when the connecting pipe comprising the bead expanded in the radial direction and formed at an end of the connecting pipe is connected, the bead is held between the first joining face and the second joining face, and is expanded in the radial direction so as to be joined with the straight hole face to form a fourth sealed portion that suppresses a leakage of the fluid. i) the end face of the pipe joint body is formed with a third joining face parallel to the second joining face of the nut member; and when the connecting pipe comprising the bead expanded in the radial direction and formed at an end of the connecting pipe is connected, the third sealed portion is formed upon joining of the third joining face with the second joining face of the second insertion hole; and/or ii) either one of the first insertion hole of the pipe joint body or the second insertion hole of the nut member comprises a straight hole face parallel to an axis of the pipe joint body; and when the connecting pipe comprising the bead expanded in the radial direction and formed at an end of the connecting pipe is connected, the bead is held between the first joining face and the second joining face, and is expanded in the radial direction so as to be joined with the straight hole face to form a fourth sealed portion that suppresses a leakage of the fluid.