Our Carbon Steel Hex Bar are crafted from high-grade carbon and alloy steel, boasting exceptional dimensional accuracy, uniform mechanical properties, and superior machinability. Covering key grades such as 1045, 4130, S235JR, they are the go-to choice for parts requiring non-rotational stability—including fasteners (hex bolts/nuts), valve stems, gear blanks, and precision mechanical components. Available in standard hexagonal sizes with surface finishes like black oxide, turned, or polished. Every batch is accompanied by a mill test certificate (MTC), fully compliant with ASTM, DIN, and GB international standards.

Production begins with selecting low-phosphorus/sulfur steel billets, which are heated evenly to optimize plasticity. The billets then enter specialized multi-pass hexagonal rolling mills, where precise roll profiling shapes the six uniform edges. Post-rolling, controlled cooling refines the material structure, followed by heat treatment to enhance strength. The final process includes straightening, fixed-length cutting, surface finishing, and rigorous inspection of hexagonal dimensions. Full digital process monitoring ensures each bar meets strict precision and quality standards.

In order to ensure product quality, we will arrange professional personnel to check product quality, packaging, weight, hardness, etc., according to customer requirements of product specifications, looking for high-quality and cheap cooperative factories in China, to provide customers with one-stop procurement services and quality assurance.

Excellent packaging: waterproof paper and plastic film + iron cover + at least three strapping straps + strapping straps fixed on iron or wood pallets can effectively protect products from corrosion and various climate changes during transportation. Generally speaking, we ship from Shanghai, Tianjin, Qingdao and Ningbo ports. We have worked with many experienced shipping companies for a long time to find the most suitable mode of transportation for you.