CASTOTUBE

Common metals and their alloys; goods of metal included in this class, particularly, metal tubes provided with a wear protection layer, connectors and branching tubes of metal, as well as metal ducts provided with a wear protection layer, all for conveying solids, liquids and gases for natural gas pipelines and tubes

[ Material processing, namely, coating of metal surfaces and hardening of metal surfaces, ] providing information in the field of material processing, namely, about making protective layers, wear protection layers on metal parts, and protective layers on metal tubes for tubes and pipeline systems