| 摘要 |
Metal reinforced HDPE pipes consisting of MS pipe of suitable diameter (1): wherein the inner layer (2); of HDPE of appropriate thickness is formed around a mandrill by extrusion machines which forms the inner HDPE layer on the MS Pipes; the outer HDPE layer (3); is extruded over the metal reinforced pipe so as to obtain metal reinforced pipe sandwiched between the inner & outer layer of HDPE which has required ring stiffness when used in the sewage system. |
