管継手及び管継手付きチューブ

Japanese Patent JP7221486

B2

To provide a pipe joint capable of obtaining initial axial force of making accompanying torque less than an upper limit, capable of keeping an axial force reduction rate low, and further capable of securing the same corrosion resistance as initial fastening at the time of reuse when fastening and releasing are repeated.SOLUTION: A flare nut 1A comprises a resin coating layer containing a polyethylene-based material, a lubricant, and solid particles. When a value obtained by dividing a mass difference due to the presence or absence of the resin coating layer by the surface area of a coating region R is defined as a unit area mass w [g/m2], 0.79