Pipes of metal, in particular steel pipes; pipelines comprised of metal pipes,in particular of steel; pressure pipelines comprised of metal pipes made of steel for transporting crude oil, natural gas, hydrogen and/or hydrogen mixtures; pipe connectors of metal, such as steel, in particular for oil pipelines, natural gas pipelines or hydrogen pipelines; threaded pipe connectors of metal such as steel, in particular for oil pipelines, natural gas pipelines or hydrogen pipelines; pipe sleeves be...