ODM Steel Round Bar Companies & Quotes

Hot-rolled round bars (typically 10mm to 310mm diameter) are produced on continuous high-speed rolling mills, delivering economical structural strength suitable for fabrication, building pins, and general lathe turning. Forged round bars (typically 150mm up to 1,200mm diameter) undergo hydraulic open-die or radial forging, offering higher reduction ratios (≥4:1) that consolidate the core structure for severe pressure and torsional applications such as turbine shafts. Cold-drawn or peeled bright bars are processed from hot-rolled stock via drawing dies or mechanical peeling to achieve tight dimensional tolerances (ISO h9, h11) and mirror-like finishes ready for CNC automated feeding.

All high-grade carbon and alloy steel round bars undergo secondary metallurgical refinement: Ladle Furnace (LF) treatment followed by Vacuum Degassing (VD) to remove hydrogen, nitrogen, and oxygen gases that cause internal embrittlement. Continuous casting blooms and ingots are slow-cooled, soaked, and hot-worked with high compression ratios. Before delivery, bars undergo automated or manual immersion ultrasonic testing in accordance with ASTM A388, EN 10228-3 (Class 3 or Class 4), or SEP 1921 (Group 3 Class D/d), verifying zero harmful voids, piping, or central looseness.

Our ODM service spans the entire production cycle: custom chemistry formulations (such as tight carbon bands, micro-alloying with Vanadium, Boron, or Niobium, and low-sulfur or sulfur-controlled machining grades), bespoke outer diameters from 5.5mm wire rod to 1,200mm forged shafts, exact cut-to-length options down to ±1mm tolerance, specialized chamfering and end-drilling, surface conditions ranging from shot-blasted to bright ground, and tailored heat treatments (Annealed, Normalized, Quenched & Tempered, or Stress-Relieved).

Yes. As a major steel industrial group operating across 1,500 acres in Tianjin and Tangshan, HZXY specializes in project material consolidation. Buyers can combine steel round bars, square bars, deformed rebar, structural H-beams, angle steel, channel sections, galvanized steel coils, black/galvanized steel pipes, and PVC drainage pipes into a single export order. This eliminates multiple customs declarations, streamlines sea-freight space utilization, and drastically minimizes logistics management overhead for international EPC contractors.

For standard stocked grades (such as Q235B, ASTM A36, 1045, and 4140 hot-rolled rounds in common diameters), shipments can be loaded at Tianjin Port within 7 to 10 days of order confirmation. For customized ODM heats requiring specific melt chemistries, special diameter roll tooling, or tailored heat treatment cycles, lead times generally range between 25 and 40 calendar days. Our standard minimum order quantity for rolling heats is 20 to 25 metric tons (one standard 20ft container load), while stock items can be supplied in flexible mixed lots.

Every commercial delivery is accompanied by an original Mill Test Certificate (MTC) conforming to EN 10204 Type 3.1, stating the exact heat number, chemical composition percentage, heat treatment record, tensile yield strength, elongation, reduction of area, Charpy impact absorption values (at ambient or sub-zero temperatures), and hardness test results. Third-party inspection reports issued by independent agencies (such as SGS, BV, or Intertek), non-radioactivity certificates, and country-of-origin documentation are readily provided.