IPDB › China Industry › Metallurgy, Mineral & Energy
China, Chinese Low Carbon Steel Round Rod Perfect for General Fabrication and Construction Projects1 Industrial Products Supplier Manufacturer Details, price list catalog:
China Industrial Products Supplier Manufacturer List Catalog
Steel ProductsSteel Round BarCarbon Steel Round RodLow Carbon Steel Round Rod
Jinan Zunkai Materials Co., Ltd.
Preview:
Product Description1. Product OverviewCarbon steel round bars are widely used for mechanical components, structural applications, and manufacturing billets. They are categorized by processing method, size, and carbon content:Material: Carbon Steel, Alloy Steel, etc.Processing Techniques: Hot Rolled, Cold Rolled, Cold Drawn, ERW, SSAW, Forged, etc.Surface: Black, Natural, Galvanized, Painted, Oiled, Chrome Coated, etc.Standard: DIN, EN, GB, ISO, JIS, BA, ANSIGrade: Q195, Q235, 10#, 20#, 35#, 45#, Q215, Q345, 12Cr1Mov, 15CrMo, 304, 316, 20Cr, 40Cr, 20CrMo, 35CrMo, 42CrMo, 40CrNiMo, GCr15, 65Mn, 50Mn, 50Cr, 3Cr2W8V, 20CrMnTi, 5CrMnMoShapes Available: Round, Square, Rectangular, Oval, Special Shapes upon Request2. Dimensional RangesConventional range: Φ5mm-Φ500mm (small diameters are used for gears and pins, large diameters are used for machine tool spindles and heavy machinery shafts);Length: Fixed lengths (e.g., 6m, 9m, suitable for transportation and batch processing), custom lengths (3m-12m, cut to order), and multiple lengths (supplying multiples of customer part sizes to reduce scrap);ShapeHot RolledCold DrawnForgedRound20 mm – 300 mm16 mm – 70 mm250 mm – 800 mmSquare20×20 mm – 130×130 mm10×10 mm – 80×80 mmCustomFlatThickness: 12–100 mm Width: 20–150 mmThickness: 6–70 mm Width: 16–80 mmCustomDiameter & Length Specifications:Diameter: Φ5 mm – Φ500 mm (small diameters for gears/pins, large for shafts/spindles)Length: Standard (6 m, 9 m), Custom (3–12 m), Multiple lengths to reduce scrapPrecision Grade: Standard (h11 GB/T 3077), Precision (h8/h9 for high-accuracy parts like bearings)3. Surface AppearanceHot Rolled (Black Leather Surface): Dark brown oxide scale; requires cutting/pickling; cost-effective.Cold Drawn Surface: High surface finish (Ra ≤ 1.6 μm); high dimensional accuracy; suitable for rough machining of precision parts.Polished Surface: Ra ≤ 0.8 μm; for high-finish applications like hydraulic shafts.General Requirements: Smooth, free of cracks, folds, or scars.4. Processing & Heat TreatmentThis street light features high brightness, energy saving, environmental protection, and easy installation. It has a waterproof rating of IP67 and has passed CE certification. It is suitable for schools, parks, roadsides, factories, squares, etc. It has a warranty period of 3 years. Moreover, we can provide various styles to meet your needs.ProcessDescriptionCharacteristics / ApplicationsHot Rolled (HR)High-temp rolling + natural coolingGood plasticity, easy machining, uneven internal structure, may require heat treatmentCold Drawn (CD)Cold-drawn after hot rollingHigh dimensional accuracy, improved surface hardness, may require annealingAnnealedHigh-temp annealing (600–800°C)Relieves internal stress, reduces hardness, improves toughness; suitable for forging/bendingQuenched & TemperedQuenching + high-temp temperingBalanced high strength & toughness; direct use in load-bearing components (e.g., 45CrNiMoVA tensile ≥1200 MPa, elongation ≥10%)5. Special Grades & ApplicationsGradeMain Chemical CompositionPerformanceTypical Applications40CrCr 0.8–1.1%Medium strength, good toughness, hardenabilityMachine tool spindles, axles, gears, high-strength bolts42CrMoCr 0.9–1.2%, Mo 0.15–0.25%High strength, toughness, hardenability, high-temp resistance (up to 300°C)Rolling mill spindles, engine crankshafts, hydraulic supports20CrMnTiCr 1.0–1.3%, Mn 1.1–1.4%, Ti 0.04–0.10%High surface hardness after carburizing, core toughnessAutomotive gears, camshafts35CrMoCr 0.8–1.1%, Mo 0.15–0.25%Good toughness, weldableOil drill pipes, high-pressure pipelines, welded structural parts45CrNiMoVACr 0.8–1.1%, Ni 1.3–1.8%, Mo 0.2–0.3%, V 0.1–0.2%Ultra-high strength, high toughness, fatigue resistanceAircraft landing gear, heavy tank track shafts, high-strength machine tools20CrCr 0.7–1.0%Low alloy, surface wear resistance after carburizingMedium-performance parts, cost-effective alternative to 20CrMnTi6. ApplicationsBuilding construction, automobile, shipbuilding, machinery, petrochemical, medicine, food, energy, power plants, space, decoration.Manufacturing of mould templates, mortise pins, columns.Structural parts under stress alternation, such as connecting rods, bolts, wheel gears.Common blanks and shaft materials; die welding model: CMC-E45.7. Packaging & ShippingSurface coated with oil to prevent rust.Bundled with iron straps; weight per bundle: 2–3 MT.Two or three tags per bundle indicating: Product Description, Heat No., Steel Grade, Size, NR, Weight, Date, Origin.Custom packaging available per customer requirements.8. Delivery TimeStandard: 8–14 days, depending on quantity and order specifications.FAQ1. How can I get a quotation from you?You can leave us a message, and we will reply to every message in time. You may also communicate with us online via TradeManager. Additionally, our contact information is available on the contact page.2. Can I get samples before placing an order?Yes, of course. Usually, our samples are free. We can produce samples according to your specifications, technical drawings, or requirements. We can also build molds and fixtures if needed.3. What is your delivery time?The usual delivery time is about 1 month for a 40FT container. If we have stock available, we can arrange shipment within 2 days.4. What are your payment terms?Our standard payment term is 30% deposit, with the balance payable against the Bill of Lading. L/C is also acceptable. We support EXW, FOB, CFR, CIF, and DDU terms.5. How can you guarantee the quality of your products?We are a factory with 100% pre-delivery inspection to ensure product quality.6. How do you maintain long-term and good business relationships?We provide high-quality products at competitive prices to ensure our customers' benefit.We treat every customer as a friend and sincerely do business while building lasting relationships.
Purchasing Request
Note: Send your purchase request, and we will screen suppliers or manufacturers for you free of charge...