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oil tempered spring steel wire Nantong Shenlong Metal Products CO., LTD is a company located in nantong city, jiangsu province,China ,which is specializing in manufacturing and exporting a wide range of steel wire ropes for elevator, steel wire ropes for aviation , carbon spring steel wire and steel wire rod. here, we will show some of the carbon spring steel wire. steel grade: 45# 55# 60# 70# 80# Grade of allowable toeranceh10h11h12dia(mm)Allowable tolerance0.2-0.3±0.01±0.01±0.02≥03.-0.6±0.01±0.02±0.03≥0.6-1.0±0.01±0.02±0.03≥1.0-3.0±0.02±0.03±0.05 grouptensile strengthA11180-1380A21380-1580A31580-1780A41780-1980A51980-2180A62180-2380A72380-2580A82580-2780 if any question, pls feel free to contact us. contact person: Ms annie lv tel :86-513-85918258 fax:86-513-85917033 msn:ly324 at hotmail dot com