TPi September 2014

news business & market

The roof of the Maracanã stadium

Duplex stainless steels in World Cup Final stadium

Sandvik was able to prioritise the production and delivery of 10,000kg of 80 x 60mm hollow bars. They were manufactured and then delivered to Hightex’s subcontractor in Poland, with prompt delivery that proved crucial to the project’s success and on-time completion. “We were the only supplier able to deliver within six weeks,” explained Dennis Ruh, Sandvik Materials Technology’s regional product manager based in Düsseldorf, Germany. “Sandvik is very proud to have provided its support, delivery and quality control to the Maracanã Stadium roof construction project.” Sandvik Materials Technology – Sweden www.smt.sandvik.com

but also at a competitive price. We selected Sandvik on that basis and they were able to deliver on time as promised,” explained Vladimir Renner, purchasing manager at Hightex. Hightex required the Duplex material for 60 cupolas, small light structures that encircle the highest point of the stadium’s roof and hold the radio cable girders in place. The cupolas must withstand extreme wind and rain pressures and handle a minimum loading of 220kN, corresponding to approximately 22 metric tonnes. Sanmac 2205 was used for the construction of the 60 cupolas, due in part to its capacity to handle pressures of 460kN, which provides the roof with a safety margin greater than two. The grade’s welding properties enabled strong welding to another stainless steel, while other elements included glass fabric material coated with Teflon for the roof itself.

Ahead of the 2014 FIFA World Cup, crucial roof construction work at the Estádio Jornalista Mário Filho stadium in Maracanã, Brazil, was completed successfully and on time, due to fast delivery of Duplex stainless steels by Sandvik Materials Technology. Hightex GmbH, a designer of roofing and façade membranes, required Duplex materials for a specific part of the World Cup Final venue. The stadium, just outside Rio de Janeiro, will also host the opening and closing ceremonies of the 2016 Summer Olympics. With a tight construction deadline to meet, Hightex opted for hollow bars made from Sanmac ® 2205 Duplex stainless steel – a machinability- improved version of Sandvik SAF 2205 TM .

Hightex GmbH – Germany info@hightexworld.com www.hightexworld.com

“We wanted to find a supplier of Duplex stainless steel that could deliver quickly

8

Tube ProducTS InTernaTIonal September 2014

www.read-tpi.com