The project called for a high-quality steel grade commonly used in the oil and gas industry, API 5L X70 PSL 2. However, the end customer requested specific changes to the steel’s chemistry to improve weldability onsite. Strict limits were also placed on the mechanical and chemical properties of the steel, and new test requirements were specified to ensure these parameters were met.
“It was one of the most stringent steel specifications we have ever received for our large diameter pipes,” says Zafer Atabey, general manager of Borusan Mannesmann. “Thanks to its expertise and strong knowhow in steel, ArcelorMittal has been always a reliable partner in our oil and gas projects, so we naturally turned to them.”