PURPOSE: To eliminate the danger of a jumping of oil feed hose when a safety pipe joint is disconnected by providing the safety pipe joint which disconnects when an oil feed hose is extended to a prescribed value or more in an adjacent location to an oil feed nozzle on the oil feed hose.

CONSTITUTION: A safe pipe joint 1, which is disconnected when an oil feed hose H is extended to a prescribed value or more, is provided at an adjacent location to an oil feed nozzle N on the oil feed hose H. In case a vehicle starts moving by mistake during an oil feeding, when the extension of the oil feed hose H has reached a prescribed value, the oil feed hose H pulls a valve body 9 through a pin 21. As a result, since the valve body 9 is pulled upward, resisting against a spring 10, the fastening of an fastening ball 6 by a leg part 9a is released, and the fastening ball 6 can slip out from a storage hole 7. For this reason, a connecting relationship between both joints 3, 5 is eliminated, and the joint 3 and joint 5 are disconnected. By doing this, there is no danger due to the jumping of the oil supply hose at the time of disconnection to a worker or others. Also, this method can be applied to every type of oil feeding equipment.