▎ 摘　　要

NOVELTY - A coated metal pipe comprises single or double walled tubing formed into a circular cross sectional profile, at least one intermediate primer layer applied over tubing, and a polyamide incorporating a graphene powder applied over the intermediate layer. USE - Coated metal pipe for automotive fluid transport tube. ADVANTAGE - The pipe has increased corrosion resistance, abrasion resistance and impact resistance. DETAILED DESCRIPTION - An INDEPENDENT CLAIM is included for manufacture of a coated metal pipe. DESCRIPTION OF DRAWING(S) - The drawing shows a cross-sectional view of length cutaway of wall segment of automotive fluid transport tube. Layer (52) Electroplated zinc coating layer (54) Chrome free conversion coating (56) Primer coating (58) Layer (60)