Chords

Supports and anchors

Offshore platforms stand on adjustable supports. During transport, the supports are retracted and protrude upwards. At the offshore site, they support the platform and anchor it to the seabed. Chords made by voestalpine Grobblech strengthen the gear racks of these supports and thus enable safe operation in adverse environments.

Complex manufacturing process

We developed our manufacturing technology for chords as hot-formed components in our in-house press shop. The pre-material is heavy plate made of high-strength and fine-grained structural steel produced in our own rolling mill. Strips are cut from this plate and formed into chords with a special tool on a hydraulic press with a maximum pressing force of up to 3500 tons. The tool function is based on finite element calculations and guarantees a high level of shape accuracy. After being hot-formed, the chords are water-tempered and straightened. Torch-cut or milled edging on the long and short sides is the final step in the production process.

Steel grade: aldur 700 QL1, S690 QL1, AB EQ/FQ70, VL E/F690

Dimensions: Lengths up to 4200 mm, wall thickness of 120 mm, diameter of 670 mm