Manufacturing # 1998 Gothenburg
An extrusion process for manufacturing a molecularly oriented PVC pipe is described. The pipe is stretched in both the hoop and axial d i i i o n s and is therefore described as a BiAxial PVC pipe. It is shown how this process enhances strength and toughness which allows a higher standard of pipe at lower cost. The pipe design process shows how with these high strength materials that ring stiffiess becomes the key criterion.