Laser or Overlap welded Pex-Al-Pex Pipe Sizes 1216, 1418, 1620, 2025, 2026 and 2632mm For supplying of cold & hot water,gas ... of:a. Adopting up-to-date technology, like laser weldingbb. Using laser measurement for controls the diameter in each stepc. The brands of ... problem of uneven and bad adhesion for one-step processing method15) Thanks to the concentricity of laser, the energy is concentered in ...