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SMS Meer to Supply Mechanical Expander for JSC Chelyabinsk
03/16/2004 - JSC Chelyabinsk, Russia, recently placed an order with SMS Meer GmbH, Germany, for the supply of a single-head mechanical expander.
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The mechanical expander’s main tasks are to size and straighten the pipes. The process begins with the insertion of an expanding head into the pipe to facilitate gradual cold forming, resulting in plastic deformation of between 1.0 and 1.5%. Pipes are then sized from the inside after final welding and straightened over their entire length. This inside sizing facilitates the later laying of the pipes as the cross-sections are optimally matched. This feature is particularly important when pipe sections have to be cut in the field. Plastic deformation subjects the pipe body and weld seam to an extreme load, higher that that to be expected later in the laid pipeline. This deformation also compensates for internal stresses created during forming of the pipe. Due to their physical and mechanical properties and their geometric quality, expanded pipes are being increasingly employed in gas and oil pipelines. |
JSC Chelyabinsk, Russia, recently placed an order with SMS Meer GmbH, Germany, for the supply of a single-head mechanical expander.
The mechanical expander will be used to expand longitudinal SAW steel pipes with diameters from 20 to 48 inches (508 to 1219 mm) and lengths from 10 to 12.2 meters in material grades up to X70. Wall thicknesses range from 7.0 to 22.2 mm. Maximum expander force in the main cylinder is designed for 7.5 MN.
SMS will deliver the mechanical expander in the second quarter of 2004, with erection and commissioning also scheduled for 2004.
SMS Meer GmbH forms part of the Tube, Long Product and Forging Technology Business Area of the SMS group. The SMS group is internationally active in plant construction and mechanical engineering relating to the processing of steel, non-ferrous metals and plastics. The group is divided into the Business Areas of Metallurgical Plant and Rolling Mill Technology, Tube, Long Product and Forging Technology and Plastics Technology. In 2002, around 9900 employees worldwide generated a turnover of approximately EUR 2.20 billion.
