Patent ID: 6041827
Filing Date: 2000-03-28
Classification: B05D,B29C,B32B,F16L

Abstract:
A multi-layered metallic pipe comprising:a metallic pipe having a relatively small diameter;a plated film made of either one of zinc, aluminum, and a zinc/aluminum based alloy and formed on an outer circumference of said metallic pipe;a first layer applied to said plated film and made of either one of a polyamide resin, a polyvinyl fluoride, and a polyvinylidene fluoride having a film thickness of 20 to 50 microns; anda second layer coating said first layer along an entire length of said first layer and made of an extrudible resin having a film thickness of 100 microns to 1.0 millimeter and a chipping resistance,wherein said second layer is formed to have stepped portions of different thicknesses.