Seamless pipes - Import export

Seamless aluminium tubes can be ordered in all commercially available aluminium alloys in addition to high strength aluminium alloys which are required for more demanding applications. ALUnna has a number of extrusion presses equipped with mandrel piercing capability. This allows us to extrude a large range of extruded tubular dimensions from a number of different billet diameters. The size range for seamless extruded tubes ranges from 17 mm to 300 mm in diameter.

We supply the pipes that are suitable for bending and are used for the constructions of plants and equipment subject to high temperatures and pressures. The seamless pipes, hot rolled or cold drawn/cold finished with heat treatment. The ASTM A335/ASME SA335 and EN 10216-2 norms require heat treatment also for the hot rolled pipes. The welded pipes are manufactured according to EN 10217-2. Supply of pipes suitable for high temperatures are according to; ASTM A 106 / ASME SA 106 (Seamless pipes) ASTM A 335 / ASME SA 335 (Seamless pipes) EN 10216-2 (Seamless pipes) EN 10217-2 (Welded pipes)

We can supply pipes for the construction of pipelines, equipment and tanks subject to low temperatures as Seamless or welded pipes, hot rolled or cold finished. Pipe norms suitable for low temperatures are according to; ASTM A 333 / ASME SA 333 (seamless and welded pipes) EN 10216-4 (Seamless pipes) EN 10217-4 (Welded pipes)

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 different kinds of cold drawn tubes ready on stock cover a wide range of applications: COLD DRAWN SEAMLESS AND WELDED TUBES SUITABLE FOR HONING. COLD DRAWN SEAMLESS AND WELDED TUBES INSIDE H8. COLD DRAWN SEAMLESS TUBES FOR SHAFTS. WELDED SMOOTH BORE CYLINDER TUBES INSIDE H9 OR H10. COLD DRAWN SEAMLESS TUBES FOR HYDRAULIC AND PNEUMATIC POWER SYSTEMS. Seamless and Welded Cold Drawn pipes honed or ready for honing; H8, H9 or H10. STEELGRADES AND DELIVERY CONDITIONS COLD DRAWN / HARD (+C acc. EN 10305 / BK acc. DIN 2391) No heat treatment after final cold drawing. COLD DRAWN / SOFT (+LC acc. EN 10305 / BKW acc. DIN 2391) The final heat treatment is followed by a suitable drawing pass (limited reduction of area). STRESS RELIEVED (+SR acc. EN 10305 / BK+S acc. DIN 2391) After the final cold drawing process, tubes are stress relieved in controlled atmosphere in order to reduce work hardening due to the cold forming process. ANNEALED (+A acc. EN 10305 / GBK acc. DIN 2391) After...

Round dialysis cells The cylindrical electrode is mounted into the cylindrical membrane, which is hold by a strong pervious pipe from the inside and protected by a mesh from the outside. The anolyte is leaded through the anode pipe through the bottom of the electrode and flows constantly through the toroidal gap between electrode and housing to the anolyte outlet. By the standardized membrane support, a multitude of membranes can be used. The pipe cells of OSMO Membrane Systems GmbH are easy to handle, because even a 2m long electrode only weights 8 kg. Advantages of the OSMO round dialysis cells: Can be opened without tools by quick release fasteners Anode pipe made of seamless thick-walled stainless steel 1.4571 (standard) – treated titanium available on request Continuously anolyte inflow and outflow as well as selective anolyte distribution Anode can be turned inside the membrane