Metal connector

For aluminum-plastic composite pipes, multilayer composite pipes and other metal lined pipe, the welding difficulties will occur, so use more rigid metal connector, a pair of metal composite pipe fittings respectively connected to one end, and then tighten the screw through together, in this connection, the most error-prone areas is a composite pipe with metal  Hydraulic tube fittings of the question of the connection, such as aluminum-plastic composite pipe and pass between the metal fittings to connect the cone clamping collar, the collar is due a non-diagonal gap closed metal ring, tighten the nut collar is closed to compress the pipe and seals small. Installation even when a large pressing force, but the time may be too long because of relaxation of the polymer material leakage. Can not be welded to the cross-linked polyethylene pipe connector of this type can also be used.