Sheffield Forgemasters International Ltd. assembled an international supply chain to help deliver the largest electroslag remelting (ESR) ingots ever made in a specialist grade of stainless steel. The U.K.-based company worked in conjunction with Rubiera Special Steel SpA, part of Italy’s Ringmill Group, for the development and production of the ingots for pressure vessel components destined for a large global chemicals manufacturer. Now in the final stages of manufacture, the multimillion-pound components have been designed to operate under highly stressed conditions as required for the petrochemical manufacturing industry.

The details of the order include the manufacture and supply of rough-machined forgings weighing more than 170 tons in total, as well as the finish-machining and pressure-testing of the completed assembly. According to Sheffield Forgemasters, there is considerable potential in the global market in the coming years for pressure vessel equipment.