Boyçelik offers a wide range of options to its customers with its machine park and technical support.

Bonnel Carcasses are the most common spring type used in the production of mattresses, sofas and seating groups worldwide. Boyçelik offers a wide range of options to its customers with its machinery and technical support. 85 mm - 180 mm height range, bonnel carcasses are subjected to heat treatment during the production phase and made durable for long-term use. Wire thicknesses from 1.90 mm to 2.50 mm can be produced and the number of spring spins can be adjusted as 4-5-6 according to the heights. Bonnel frames produced by Boyçelik; - It is the classic and best known spring system. - Comfortable, robust and economical. - Can be manufactured in different wire and spring diameters. - It provides the advantage of long-term use and comfort as it undergoes spring fatigue and annealing process during production.