Datasheet : Extrusion : Multilayer Multi layer tube Cross section Our Multi layer tube, with high concentricity (more than 90%), enables the catheter to handle high pressures consistently and effectively. With the co-extrusion process, unlike welded tubing, our seamless precision tubing meet critical design tolerance. Ideal for the application requires handling high pressure evenly, such as a balloon catheter, for ensuring a tight fit between balloon and blood vessel. Specifications Wall thickness : Outer diameter : General purpose resin (HDPE, PA, PA Elastomer, TPU etc.) 2 or 3 layers, all different polymers possible Supplied with : Available layer ratio : Asahi - Controlled over 90% - STD-1.7% - Average: 97.3% General - Uncontrolled Concentricity of 3 layer tube, Asahi vs General (internal investigation)