Card sets of pipe joints - Applicable medium: oil, water, gas and other non-corrosive or corrosive media, sealing pipe joints flexible, equipped with the specifications of the aluminum-plastic tube and pipe connections, securely connected, sealedgood performance characteristics, and thus in the oil refining, chemical industry, light industry, textile, defense, metallurgy, aviation, shipbuilding and other systems are widely used; apply to a variety of mechanical engineering, machine tools, hydraulic transmission pipeline.