| 摘要 |
<p>PROBLEM TO BE SOLVED: To provide a conductive resin coated steel pipe reduced in production unit cost and further enhanced in aesthetic appearance by using a filler in place of carbon black, and an extrusion molding method therefor. SOLUTION: The outer peripheral surface of a thin-walled steel pipe is coated with a regenerated resin such as polyethylene, ABS, AAS, polypropylene or the like and, further, the outer peripheral surface of the coating resin is coated with a conductive resin such as polyethylene, ABS, AAS, polypropylene or the like mixed with the filler so as to provide a part having a wall thickness and width necessary for developing the conductivity of the conductive resin on the pipe body at one place or a plurality of places in the circumferential direction of the pipe body to form a cross section equal in the axial direction of the pipe by a two-layered coating structure of which the whole outer periphery is coated thinly.</p> |
