Chaowei Copper Pipe Fitting Features: 1. Standards: British, American, German 2. Manufactured using advanced production equipment and testing technology 3. Equipped with Chaowei aluminum & plastic compound pipe to design, 4. High pressure and corrosion resistance 5. Insert the pipe into the joiner, easy to join 6. Rotating tightly with nut, can join the pipe with the join tightly, not affecting and prevent gas or liquid from leakage