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Posco to Supply Rolled Steel for Lotte World Tower

01/18/2012 - Posco has secured the full order for the rolled steel required to construct the Lotte World Tower in Jamsil, Seoul, planned for completion by 2015.

Posco has secured the full order for the rolled steel required to construct the Lotte World Tower in Jamsil, Seoul. With 123 floors planned above ground, and six below, Lotte World Tower is to be the world’s second tallest building, behind UAE’s Burj Khalifa. Construction is planned for completion by 2015, using 40,000 tonnes of rolled steel including regular and thermo mechanical control processed (TMCP) steel.
 
Posco worked with List Steel Structure Lab to propose the adoption of extra-thick plates including high-performance grade steel and 120-mm thick regular plates, and steel column flat plate structure as well as module-type steel piping.
 
Posco also opened a briefing session regarding the quality control plan and the features of building-use steel, where the benefits and features of its on-site support and of the steel being used in the construction were explained.
 
The Lotte World Tower is being fitted with 120-mm thick large-scale concrete slabs at the ground-floor level. Lotte Construction, which had previously undertaken the project, was planning to use between 40- and 80-mm thick plates welded together, but the use of two thick plates welded together incurs welding and input costs. Posco suggested instead the use of 120-mm thick high-performance grade steel (SM490TMC). Posco also decided, and Lotte Construction agreed, that it would produce 120-mm plates using a facility that used to produce 80-mm high performance steel, with internal quality tests and QA consultation applied on them.
 
Posco plans to strengthen its marketing of high-rise construction projects through EVI (Expanded Value Initiative for Customer), and to position itself as an expert in thick-plate construction.