The Patent Tube is a carbon steel tube with longitudinal weld and round section. It is produced from low carbon steel coils SAE / ABNT 1008/1012. Hot-rolled, cold-rolled or galvanized and welded by ERW electrical resistance, it is applicable in the conduction of water, gas, steam and other non-corrosive fluids.
Its manufacturing tolerance is based on national standards. For the diameter, the values in inches refer to the nominal value (internal diameter) and the values in millimeters related to the external measurement (external diameter).
