... pipes, aluminum plastic composite pipes, PEX-AL-PEX pipes (for cold water, hot water and gas), pipe connectors Aluminum-Plastic Composite Pipes (JY051) PEX-AL- ... date technologies, e.g. Laser welding,our PEX-AL-PEX pipes have excellent performance 12. Compare to the same kind ... Can settle the common problem of uneven and bad adhesion for one-step processingmethod14. Thanks to the concentricity of laser ...