Cold drawn tubes

Applications Pipes for the construction of pipelines for water, liquid hydrocarbons, natural gas and for the construstion of chemical and industrial plants, refineries etc. Norms Line pipes are according to the following norms: API 5L (ISO3183) (seamless and welded pipes) ASTM A53 / ASME SA53 (seamless and welded pipes) Manufacturing methods Seamless pipes, hot rolled or cold finished with following heat treatment: ERW pipes up to dia 24" and SAW pipes for the other sizes.

The round tubes are manufactured from a coil that is bent and electric resistance welded (ERW). The forming process can be according to EN 10210, which foresees hot forming or cold forming followed by heat treatment, or according to EN 10219, which foresees cold forming without following heat treatments. The finished product is fully killed and welding seam bead is inside and outside trimmed. These products are used to manufacture both welded and bolted structures, in the field of constructions, engineering, industrial constructions, transports, automotive, agricultural machinery and earth moving machinery. The cold finished tubes are particularly suitable for structures at sight or for aesthetical uses, thanks to the surface aspect typical of cold forming. NORMS HOT FINISHED” TUBES EN 10210-1/2 COLD FINISHED” TUBES EN 10219-1/2 INSIDE TRIMMING EN 10217

The round SEAMLESS tubes are hot rolled and satisfy both the requirements of the norm EN 10210 for structural applications and EN 10297-1 for mechanical applications. These steel tubes are fully killed and are suitable for structural applications but with the possibility to reach up to 100 mm w.t., which is impossible for welded tubes. These tubes are used for the manufacture of various kinds of construction components, above all where heavy wall thickness are required. EN 10210-1/2 (structural applications) EN 10297-1 (mechanical applications)

As per the norm EN 10297 specifies the technical delivery conditions for seamless round steel tubes. The tubes for mechanical applications are mainly used in those processes in which turning and CNC machines are used. The wide size range available, with OD from 21.3 to 812 mm, gives the possibility to manufacture several kinds of components for different applications: small machine parts, flanges, fittings, Archimedean screws, hydraulic cylinders for heavy machines etc.