TPT July 2008

T ube & P ipe M ills and R ollforming L ines

From old to new: substantial investment in seamless steel tube mill

end of July, when the entire mill line will be finalized and completely tested. ‘Rough’ operation of the big Mannesmann mill line is due to start in October 2008. The rolling mill of the big Mannesmann was built during 1917-1918 and is one of the world’s oldest rolling mills with well- maintained integral parts. Over the years the line has been continuously modernized and adjusted, with only some original equipment still in operation (piercing mill, pilger mill, hot cutting mill and incline furnace). During its lifetime, the rolling mill has processed around 6 million tons of steel. Mr Jaroslav Sarovsky, CEO and director of Valcovna Trub, explains the reasons for investment, “The main asset, besides increasing the total capacity of the plant, is improvement of surface quality and accuracy of pipes, extending the assortment of steel grades and length of pipes. Volume of the non-destructive metrology will be increased as well as possibilities of its usage.” Valcovna Trub TZ as – Czech Republic

Valcovna Trub TZ, one of the largest Czech producers of thick-walled seamless steel tube and pipe, is reaching completion of an extensive multi-million dollar investment programme. Owned by Trinecke Zelezarny, the company is currently in the stages of reconstructing and modernizing its whole plant. At the heart of this plant is a big Mannesmann production line that produces seamless steel tube and pipe with a diameter from 168mm to 406mm.  Currently under construction, the new rotary hearth furnace will be used for heating-up the material

Back in 2005, the company purchased new technology from SMS Meer GmbH with the aim of upgrading its facilities. The team assembled to carry out the project for Valcovna Trub consists of Trinecky Inzenyrink, BKB Metal as, D5 as, and Enviform sro. As part of the investment, the Ignis furnace was relocated in the 2 nd quarter of 2007. This was followed by the development of the machining centre with metallurgical tools, and building and adjustment of braced areas in the mill line zone. In October 2007, work began on the ‘heart’ of the whole project – the construction of the rotary hearth furnace and walking beam furnace. Further developments have taken place this year on installation of other technologies. During May and June, the final stages were due to be carried out, including installation of a cutoff for the mill line. The finishing mills will be installed at the

Fax : +420 595 956 140 Email : info.vvt@vvt.cz Website : www.tube.cz

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J uly 2008

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