TPT January 2021

T E CHNOLOG Y

T E CHNOLOG Y

Nakata signs contract with leading steel tube producer for advanced 24" pipe ODF mill

NAKATA Mfg Co has announced that a contract for one of its most advanced orbital die forming mills, with a 24" size capacity for producing stainless steel pipe, has been signed. The contract is with a major global stainless pipe supplier and was finalised in October 2020. The customer already possesses three Nakata-developed mill lines for 24", 8" and 2" size tubes known by the

name ‘FFX’. FFX is Nakata’s popular and long available advanced mill. No roll change is required at the BD~CL section when forming different pipe ODs, which is also the case with the new ODF mill equipment. The customer wanted to diversify its production range so it decided to install a new mill line for 24" size using ODF, as this equipment can produce pipes with ultra-light wall-thickness stably, even with t/D ratio less than 1 per cent. It has a current plan to go around 0.6 per cent

during a special project it is working on. This is a remarkable achievement which is possible due to the rotational die feature in the ODF mill, which keeps hold of the strip edge during the forming process, helping to generate almost ‘zero’ forming strain at the edge as a result. This feature is essential for such ultra-light WT pipe production. Nakata Mfg Co

sales@nakata-mfg.co.jp www.nakata-mfg.co.jp

The OFD mill be help produce ultra-light WT pipes

NISCO rolls first bar on Kocks 3-roll RSB 5.0 THE Chinese company Nanjing Iron & Steel Co has successful modernised its 800.000t/a medium bar mill incorporating a reducing and sizing block (RSB ® ) 500++/4 in 5.0 design by Friedrich Kocks GmbH & Co KG. and tubes within a dimensional range from Ø50 to Ø160mm. Apart from the RSB ® 5.0, Kocks is also responsible for the thermo-mechanical rolling process including five water boxes and full automation package. The low temperature rolling process is applied for sizes up to Ø130mm. rating the Kocks RSB ® 5.0, NISCO believes that it has consolidated and managed to further expand its market share. Friedrich Kocks GmbH & Co KG www.kocks.de NISCO www.njsteel.com The RSB ® 500++/4, which is the biggest Kocks 3-roll reducing and sizing block, operates as the finishing unit for the production of straight bars With the modernisation of its 800.000t/a medium bar mill incorpo -

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JANUARY 2021