Compressed air quick pipe joint

The invention discloses a compressed air quick pipe joint. The compressed air quick pipe joint comprises a connecting pipe main body made of a stainless steel material, and a main pipe quick release union joint fixed to one end of the connecting pipe main body by welding, wherein a chamfering end socket is formed in the end of the main pipe quick release union joint; a quick release clamping groove is formed in the main pipe quick release union joint; an outer layer protecting sleeve is arranged at the outer side of the connecting pipe main body in a sleeving manner; and an external connectionpipe joint is fixed to the other end of the connecting pipe main body by welding. The compressed air quick pipe joint has the beneficial effects that the compressed air quick pipe joint can realize the quick connection of outer pipe fittings, meanwhile can clamp the pipe fittings through the cooperation of an inner positioning casing pipe and an outer positioning casing pipe when the pipe fittings are fixed, and quickly