ST37 Carbon steel round bar

Chemical composition: Fe, C, Mn, Si, etc<br> Standard: GB, GOST, ASTM, AISI, JIS, BS, DIN, EN<br> Applications: Bridges, ships, chemicals, petroleum, etc

4140 Carbon steel round bar

Diameter: 5.0 mm - 800 mm<br> Process: Smelting, continuous casting, rolling, and heat treatment<br> Applications: Mining, petroleum, chemical, transportation, etc

C45 Carbon steel round bar

Surface: Black skin, Bright, etc<br> Technology: Hot rolling, Cold drawing, Hot forging<br> Application: Components such as gears, bolts, shafts, keys, etc

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