In the global market almost any tube/pipe product in any application area has variants in multi-layered forms. Popularized since the early 1900’s, variants have diversified to contain two to several materials in layer structures up to 12 layers in modern thermoplastic constructions. Sensibly, process technology advancement has allowed for such proliferation and broad application ranges, still the need for more efficient production and greater product performance is ever growing. To address this need, new process advances through R&D and technology transfer is necessary. Presented here is the combination of layer multiplication co-extrusion and rotating die heads to explore new areas process technology allowing for layer structures of hundreds to thousands of layers. Rotating die heads have some areas of relative frequent use in industry, but little academic study has been conducted on this type of unique flow, especially in the presence of multi-layered systems. Studied herein, is the use of a rotating die head and its impacts on weld lines and layer structure in forming multi-layered tubing and piping. Both experimental and F.E.M simulation approaches were utilized to study the impact of viscosity and elasticity stratification in layered structures under annular Poiseuille flow, with and without the application of die head rotation. Such positive benefits of pressure drop reduction and layer stabilization have been observed in simulated results, while negatives such as vacuum sizing complication and need for RPM optimization in experimental trials have been experienced when rotation is applied.