Cold Drawn Round Steel Bar Standard: GB/T 3078, GB/T905 Steel Grade: 10#,15#, ... -80MM Commodity:Cold Drawn Steel Round Bars1) Standard: GB/T 3078, GB/T9052) Steel Grade: 10#,15#,20#,30 ... bar of automobile. QUALITY ASSURANCE:1) Strictly acc. To GB/T 3078, GB/T9052) Widely for HRSG, Boiler; Heat ... guide free of charge at anytime;4) Reasonable Price: to be better support your business;This Steel Bar apply ...