Metallic coating of the armor wires of steel of a flexible tubular conduit destiny to the transport of fluid of hydrocarbons

摘要

The pipe (1) has a reinforcement layer (3) including multiple metal threads made of steel or zinc, in which mass percentage of carbon is less than or equal to 0.75 percent. A surface of the metal threads is protected by a metal coating. The metal coating is selected among metals, in which measured electrochemical potential in aired marine environment, with respect to a Saturated Calomel Electrode (SCE) is about 1030 millivolts to 700 millivolts, where the metal coating is made of aluminum or alloy of aluminum. The metal coating is deposited by immersion in a hot bath, which is a bath of an aluminum or aluminum alloy in fusion, or zinc or zinc alloy in fusion.