Heat-exchanger pipe for e.g. waste-gas heat exchanger, has cross section with edge provided with radius, where pipe is made from metal material that is formed from steel and exhibits thickness smaller than or equal to specific value

摘要

The pipe (1) has a rectangular cross section (4) with an edge provided with a radius (11-14), and an oblong cross section, where one end of the oblong cross section is implemented as semi-circle. The pipe is made of a band-shaped sheet metal material (2). A turbulence insert is arranged in the pipe and connected as a single piece with the band-shaped sheet metal material. The metal material is formed from stainless steel that exhibits a thickness smaller than or equal to 0.4 millimeters. The metal material is plated and/or coated with a soldering material.