Straightened steel wires used for mattress and sitting group frames are manufactured to specified size, wire diameter and orders. Boyçelik presents TS 2500-1 EN 10270-1 quality standard conformant straightened steel wire ranging from ø2,70 mm – ø5,00 mm for use by mattress and spring manufacturers. As a result of customer focused processes, the company is able to customize production to meet specified chemical features and tensile strengths. Frame wire can be manufactured as straightened or as a frame and supplied by piece or kg units in packages ready for shipment.