TPi July 2010

Stainless steel tubes Seamless stainless steel tubes and pipes

The Centravis production plant is one of the largest mills in Europe specialised in the production of seamless stainless steel tubes and pipes. Modern plant equipment and broad experience allow the company to provide an extensive product portfolio. Centravis seamless stainless steel solutions are used in a wide range of corrosive media and high temperatures in chemical and petrochemical industries, nuclear and thermal power engineering, non-ferrous metallurgy, machine and shipbuilding, food and

other industries, covering a wide variety of tube segments.

ferritic classes, duplex, super duplex, Ni-alloys tubes and a dimensional range from 4 to 245mm, with wall thickness of 0.2 to 35mm, and a maximum tube length of 26m. Tube segments include: general tubes and pipes; boiler tubes and pipes; heat-exchanger tubes; instrumentation tubes; furnace tubes; hollow bars; and Ni-alloys tubes and pipes.

The company can deliver according to individual specifications and additional requirements. Parameters such as the use of special instruments, additional finishing after rolling, different methods of testing and tube examination, heat treatment, polishing, individual packaging and many other features can be adapted in the production plant.

Centravis – Ukraine info@centravis.com www.centravis.com

Centravis’s portfolio covers various steel grades, austenitic, ferritic, austenitic

Taking tube and pipe material development capability to the next level

SandvikMaterialsTechnology’sexpertise in stainless steel and advanced materials offers a comprehensive seamless tube and pipe product programme. The latest hyper-duplex stainless steel, Sandvik SAF 3207 HD ® , optimises material strength and corrosion resistance, extending the properties of Sandvik’s super-duplex grade, Sandvik SAF 2507 ® . The company says that use of the new grade makes it possible to develop installations and explore new oil and gas fields that were previously thought to be too expensive and technologically unattainable.

Developed for use in deeper more remote subsea umbilicals operating in aggressive environments, Sandvik SAF 3207 has a higher yield strength to withstand increased pressures, facilitating thinner wall umbilicals that reduce reel sizes and lower installation costs. It extends the operating capabilities of hyper-duplex materials having an extremely high tensile strength of 980- 1,180 MPa, and increases the operating temperature up to 90°C (194°F).

2707 HD ® , designed for service in highly corrosive conditions such as seawater cooled heat exchangers. It is particularly suited to aggressive, chloride-containing environments and displays excellent resistance to pitting. This makes it suitable for chemical, petrochemical and refinery industries, to meet higher demands on performance whilst maintaining the reliability and safety of equipment. Manufacturing dedicated seamless tube and pipe for the power generation and nuclear industry, Sandvik is set to increase its production capability as a result of significant orders for steam generator tubes for the US and Chinese markets. Its development programme also includes special tubes for high efficiency, new generation power plants that operate at increased temperatures. Sandvik constantly adapts to changing market conditions and the requirements of its customers by adding specialised and higher performance products to its range of steels. These include materials that extend seamless tube life in highly corrosive environments such as urea, ethylene and petrochemical plants, in addition to hydraulic and instrumentation tubing in Sandvik SAF 2304 ® that withstand nearly twice the pressure of standard material tubes. Sandvik Materials Technology – Sweden www.smt.sandvik.com/tube

Another specifically developed hyper- duplex stainless steel is Sandvik SAF

Stainless steel tube supply from Sandvik

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Tube Products International July 2010

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