Exhaust systems comprised of pipes, collectors, mufflers, filters, and catalytic converters for use in motors and engines of land, air and water vehicles, generators, pumps, compressors and heating and cooling devices equipped with internal and external combustion engines and other power sources; Parts for these exhaust systems, namely, pipes of metal, exhaust silencers, exhaust catalyst elements and particulate filters, catalytic converters, particle and soot filters, exhaust manifolds, exha...