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Tue, Jan 28, 2020, 21:27:53 ---- The fact: 42.844.000 visitors done.

First "Star-Drive" Blocks for the American continents
Kocks (Friedrich Kocks GmbH & Co KG)
Port Pipe and Tube Inc
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Company: Kocks (Friedrich Kocks GmbH & Co KG), Germany
Attn: Joerg von der Heiden

V & M STAR, the leading seamless tube producer in North America, is building a new plant in Youngstown. The construction is being carried out by Danieli Centro Tube, a member of the Italian DANIELI-Group, and German FRIEDRICH KOCKS will supply its latest-generation Extractor and Stretch Reducing Block.

V & M STAR belongs to Vallourec, a world leader in premium tubular solutions. Youngstown is located in the Mahoning County in the state of Ohio, half way between Pittsburgh and Cleveland. The formerly large city was the centre of American steel production up to the mid seventies. Today it only counts 82.000 residents.

The hot rolling mill is an integral part of this new tube plant. It is a continuous mill and consists amongst others of a FQM-Elongator, an Extracting Block [EXB] and a Stretch Reducing Block [SRB]. After its completion, the plant will be capable to produce 450,000 t/a of high quality seamless tubes within a diameter range of 60.3 to 180.0 mm (2.375 7.087) with excellent tolerances and mechanical properties according to international standards.

FRIEDRICH KOCKS GmbH & Co KG in Hilden / Germany will supply the 3-stand Extractor [EXB] and the 24-stand Stretch Reducing Block [SRB], both based on the 3-roll "Star Drive" design featuring separate drives for individually driven rolls. The 3-roll stands for EXB and SRB are designed for a nominal roll diameter of 360 mm. The extractor will be operated with non-adjustable stands only, whereas the stretch reducer will be equipped with the non-adjustable stands for the reducing passes as well as the adjustable ones for the finishing passes.

Main characteristics of this concept are the in-line remotely controlled pass adjustment for the adjustable stands, the stand quick changing system as well as the roll shop with quick roll changing system. All these aspects significantly reduce the total number of stand changes normally required for optimum production.

Furthermore the scope of supply comprises the process automation systems and the KOCKS TUMICON-System, which consists of various components. The computer program TUMICON serves as calculator for the pass design and optimum setup values (e.g. motor speed) as well as a management tool for rolls and stands. The TEC-BOX with the functions AWC for wall thickness control and HEC for minimization of heavy ends is a highly dynamic open and closed-loop system for quality optimization.

The supply is completed by the INSPECT-System, which visualizes the technological controls of the TEC-BOX as well as the measured values from the rolling mill (wall thickness, heavy ends, etc.). Process know-how and commissioning of the scope of supply are also KOCKS responsibility.

Commissioning of the new seamless tube plant is scheduled for the first half of 2012.


Vallourec is a world leader in premium tubular solutions primarily serving the energy markets, as well as other industrial applications.

With over 20,000 employees, integrated manufacturing facilities, advanced R&D, and presence in more than 20 countries, Vallourec offers its customers innovative global solutions to meet the growing energy challenges of the 21st century.

Listed on NYSE Euronext in Paris (ISIN code: FR0000120354, Ticker VK) and eligible for the Deferred Settlement System, Vallourec is included in the following indices: MSCI World Index, Euronext 100 and CAC 40.

In the United States, Vallourec has a sponsored Level 1 American Depository Receipt (ADR) program (ISIN code: US92023R2094, Ticker: VLOWY). The ratio of Vallourec ADR to ordinary shares is 5:1.

     Tel: +49 - 2103 - 790 151   Fax: +49 - 2103 - 540 28
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