TPT September 2017

T E CHNOLOG Y

Electrolytic pickling of stainless steel and special steel tubes

Condoroil to develop similar processes for pickling other types of pipe. The range includes the following plant families: • Elettra TU standard in-line pickling unit for TIG and laser welded tubes • Elettra TU Fast, with increased power, allowing it to be applied on induction welding lines • Elettra TU BR, developed for in-line electro polishing • Elettra TBS batch operating unit for internal and external pickling of hot extruded tubes • Elettra TBL batch operating unit for internal and external pickling of large diameter tubes from calender or press machine

was the high pickling speed, even on corrosion-resistant materials. For example, a super duplex annealed tube can be pickled in two minutes, compared to 12 hours required for a nitro-hydrofluoric solution. There is little environmental impact, and the absence of nitric and hydrofluoric acid means increased safety. The solution conduction is simple, and a zero- discharge process is easily implemented. More than 40 in-line picking units have been installed in Europe alone, prompting

IN THE stainless steel pipe production sector, the main cost item, excluding raw material, is generally related to production personnel. This is particularly the case in the production of TIG or laser welded tubes, on in-line profiles starting from coils. In 1999, Condoroil Stainless began researching a plant that would allow pickling of the tube in a few seconds, without danger to the line operator. The research was completed positively with the use of electrolytic technology, and in 2000 the first tunnel Elettra TU was created, which allowed annealing, pickling, rinsing with demineralised water, drying and packing the pipe bundles directly on the profile, eliminating numerous handling steps. Over time it became apparent that the possibility of pickling in-line was not the only advantage given by electrolytic technology. An important advantage

Condoroil Chemical Srl – Italy Fax: +39 0332 945303 Email: info@condoroil.it Website: www.condoroil.com

CNC production line for cutting/bevelling COPIER Bevelmachines has unveiled its latest invention for metal pipe cutting and bevelling in a single production line. The company offers stationary equipment for pipe shops, mainly pipe bevelling machines, pipe cut and bevelling machines, CNC pipe end working machines and pipe spool welding machines. As customers often need to cut or saw the pipes before they start bevelling, Copier has invented a production line for length measuring, cutting and bevelling of metal pipes. The machine is called the Beaver CB and has length measuring, cutting and bevelling all in a single machine. When using the Beaver CB the pipe is always clamped while cutting or bevelling. One operator can control the complete production line from the operator panel. The main advantage of Beaver CB is that output is higher because length measuring, cutting and bevelling are combined. The Beaver CB is a completely CNC-controlled machine with both radial and axial feeding. It cuts with up to three cutting bits from outside to inside of the pipe, and during this process it preforms a bevel shape with the required angles. The Beaver CB will be on display at the Schweissen & Schneiden exhibition at stan d 10B04 .

Copier Bevelmachines – The Netherlands Email: info@copierbv.com Website: www.bevelmachines.com

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SEPTEMBER 2017