Cold Drawn Round Steel Bar Standard: GB/T 3078, GB/T905 Steel Grade: 10#,15#,20#,30#,35#,40#,45#, Specification : ... , GB/T9052) Widely for HRSG, Boiler; Heat Exchanger, Condensor; Pipeline; Mechanical Machine; Structure; Automobile.3) All steel alloy pipe products are ... to be better support your business;This Steel Bar apply to absorber and braker bar of automobile with good surface and high ...