Abstract: Moulded insulation bodies, processes for the production thereof and use thereof consisting essentially of ceramic material comprising SiO2 fibers and Al2O3 fibers which has been produced using Al2O3 sol as a binder and kilned at a temperature of above 800° C. for insulation of the ends of cracking tubes of a tubular reactor for performing a steam reforming process for generating synthesis gas which project out of the reactor heating space.

Abstract: A reforming tube including a cavity emerging on either side of the tube, an external wall, an internal wall, a protection element for protecting against corrosion inserted into the cavity mirroring at least a portion of the internal wall, a space between the internal wall and the protective part, and a refractory material which fills in the space between the internal wall and the protection element.

Abstract: Moulded insulation bodies, processes for the production thereof and use thereof consisting essentially of ceramic material comprising SiO2 fibers and Al2O3 fibers which has been produced using Al2O3 sol as a binder and kilned at a temperature of above 800° C. for insulation of the ends of cracking tubes of a tubular reactor for performing a steam reforming process for generating synthesis gas which project out of the reactor heating space.

Abstract: A reforming tube including a cavity emerging on either side of the tube, an external wall, an internal wall, a protection element for protecting against corrosion inserted into the cavity mirroring at least a portion of the internal wall, a space between the internal wall and the protective part, and a refractory material which fills in the space between the internal wall and the protection element.

Abstract: A shaped and pierced hollow workpiece is made by first confining a hollow metal blank in a cavity of a die which has an inner surface and is formed with a lateral compartment. The blank is internally pressurized to press it outward against the inner surface of the cavity while forming at the compartment an outwardly projecting bulge. A tool is pressed against an outer surface of the bulge and the bulge is pressed inward so as to at least partially to invert it and press a central portion of the bulge against an opposite inside wall of the blank. A hole is then machined through the blank where the central portion of the bulge engages the opposite inside wall.