| abstract |
Use of a coated metal conduit for the manufacture of a pipe laid in water, where, conditioned by the chosen laying procedure, the coating is exposed, during the course of laying, to a request for shear pressure and / or a request for bending, with the proviso that the conduit is coated with an extruded layer, at least 1.0 mm thick, based on a polyamide molding mass, characterized in that the pipe is wound for transport and unwound before or during laying, or the pipeline is laid according to the J-Lay method or the S-Lay method and, where, in addition, the viscosity of the demolished mass of extruded polyamide at 240 ° C and a shear rate of 0.1 1 / s In accordance with ASTMD4440-3, it amounts to at least 2000 Pa.s. |