... perfect cold formability.Classification 2: Prestressed wire rodAvailable Diameter(mm) Φ5.5--16mmGrade :SWRH82B,SWRH77B, SWRS82BCharacteristic ... highway, bridge, bridge cable ,large cement pipe, etc. Classification 3: Welding wire rodAvailable Diameter(mm): Φ5.5mm, 6. ... requirement of metalwork industry.Classification 5: Ordinary wire rodAvailable Diameter(mm) 5.5--40mmGrade: SAE1006, SAE1008, SAE1010, ...