TPT March 2011

T echnology U pdate

Tube and pipe clamps for XXL applications

WALTER Stauffenberg, a supplier in the field of fastening technology, offers two lines of tube and pipe clamps for XXL applications. Pipe clamps in the ‘heavy’ series to DIN 3015 are intended for securing tubes and pipes with outside diameters of up to 406mm. The clamp bodies and fastening components can be configured to suit the individual application, and the user can select between various clamp body materials as well as different mounting and fastening techniques. One advantage of the ‘heavy’ series is that its design and recess shape ensure a high retention force. The ‘engineering’ class is worth considering when the pipes to be fastened have a diameter of up to 800mm. These clamps consist of two U-shaped welded structures, plastic jaws for holding the pipe and two M30 bolts for tensioning. The clamps are available in types KS (standard), DKS for extra heavy pipes (two KS clamps welded in tandem), as well as KSV and

DKSV (anchor-bolt fastening). 
The clamp is made of primed steel St37, which can be hot-dip galvanised on request. Sales engineer Frank Schröder commented, “Because these are standard clamps made of steel, the components in the KS series can, in principle, have extremely large dimensions. Once, for instance, we supplied clamps for pipes with a diameter of more than one metre.” The nine construction sizes with four or five pipe supports allow flexible adaptation to a wide variety of pipes. The company has also developed a material for clamp bodies that delays the formation of crevice corrosion, a problem that affects pipelines, especially in rough environments such as offshore facilities. Aggressive salt water penetrates the gap between the pipe and the clamp body, causing corrosion within the joint. Even pipelines made of stainless steel soon show obvious signs of pitting and grooving in the metal. When intensified by

the impact of tensile forces and inherent vibrations throughout the system, this develops into cracks and leakages in the pipe. Salt spray tests according to EN ISO 9227:2006 have verified that the formation of crevice corrosion is markedly delayed when the clamps are made of PP-AC. This means that the servicing intervals for facilities in onshore and offshore industries can be extended, minimising maintenance work. The dimensions of the PP-AC clamp bodies correspond to DIN 3015. All the fastening components, such as bolts, welding plates and mounting rails, are also available in stainless steel grades A2 and A4. Walter Stauffenberg GmbH & Co KG – Germany Fax: +49 2392 2505

Email: sales@stauff.com Website: www.stauff.com

KS series clamps in standard dimensions are suitable for diameters between 220 and 800mm

Reconditioned machinery and installations

machines, pointing machines, chain draw benches), Calow/Hetran/SMS (peeling machines), SMS (pilger mills, extrusion presses), Bültmann (drawing, peeling and straightening machines), Dahlhaus (drawing and straightening machines), Mannesmann Meer (pilger mills, drawing and straightening machines), and Lidköping (centreless grinding machines), among others. Teutenberg stocks more than 100 special machines on a floor area of around 3,000m². The company can also offer

new or hardly used machines that have been sold by their previous owners owing to reorganisation measures or company liquidations. The company also acts as agent for the sale of large-scale plants still standing on their owners’ premises. Franz Teutenberg GmbH & Co KG – Germany Fax: +49 2154 9579 29 Email: info@teutenberg-maschinen.com Website: www.teutenberg-maschinen.com

FRANZ Teutenberg GmbH & Co KG specialises in the worldwide purchase and sale of fully reconditioned second-hand machinery and complete installations for the production and treatment of semi-finished steel and non-ferrous wires, bars, tubes, sheets, strips and plates. The company supplies equipment from leading manufacturers, such as Schumag (combined drawing machines, peeling, straightening, centreless grinding/ polishing and chamfering machines), Kieserling (peeling and straightening

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M arch 2011

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