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  • Cold Rolled hot rolled S35C S45C SK3 S55C Mild Steel Carbon steel Round Bar wire rod
  • Cold Rolled hot rolled S35C S45C SK3 S55C Mild Steel Carbon steel Round Bar wire rod
  • Cold Rolled hot rolled S35C S45C SK3 S55C Mild Steel Carbon steel Round Bar wire rod
  • Cold Rolled hot rolled S35C S45C SK3 S55C Mild Steel Carbon steel Round Bar wire rod
  • Cold Rolled hot rolled S35C S45C SK3 S55C Mild Steel Carbon steel Round Bar wire rod
  • Cold Rolled hot rolled S35C S45C SK3 S55C Mild Steel Carbon steel Round Bar wire rod
Cold Rolled hot rolled S35C S45C SK3 S55C Mild Steel Carbon steel Round Bar wire rod

Cold Rolled hot rolled S35C S45C SK3 S55C Mild Steel Carbon steel Round Bar wire rod

  • 1 - 24 Tons
    $880
  • 25 - 199 Tons
    $800
  • >= 200 Tons
    $660

Customization:

Customized logo（Min.Order: 25 pieces）
Customized packaging（Min.Order: 25 pieces）
Graphic customization（Min.Order: 25 pieces）
View product details

Cold Rolled hot rolled S35C S45C SK3 S55C Mild Steel Carbon steel Round Bar wire rod

Product overview

Core functionalities

Applicable scenarios

Unique advantages

  • Structural Support & Machinery Components: Engineered for use as load-bearing elements in construction and durable parts (shafts, spindles) in machinery due to high-strength carbon steel grades (S35C, S45C, SK3).
  • Custom Fabrication: Enables versatile applications through processing services like cutting, bending, welding, and punching, supporting tailored solutions for diverse projects.

Key features

  • 1. Material Technology

    • With cold rolled and coated surface treatments, achieve a corrosion-resistant, smooth finish that outperforms uncoated alternatives*.

  • 2. Interactive Design

    • With customizable processing services (cutting, bending, welding), adapt the rods to diverse applications like machinery parts or structural supports*.

  • 3. Performance Parameters

    • With a precision tolerance of ±1%, ensure consistent performance in high-accuracy projects compared to standard rods*.

  • 4. Scenario Solutions

    • Designed for both industrial machinery and construction projects, these rods provide reliable structural support and durability in demanding environments*.

  • 5. Certification Standards

    • Compliance with global standards (GB, ASTM, DIN) ensures quality and safety, meeting international project requirements more broadly than non-certified alternatives*.

Product details

Cold Rolled hot rolled S35C S45C SK3 S55C Mild Steel Carbon steel Round Bar wire rod

The Cold Rolled Hot Rolled S35C S45C SK3 S55C Mild Steel Carbon Steel Round Bar Wire Rod combines precision engineering with versatile material properties. Manufactured to strict global standards (GB, AISI, DIN, JIS, ASTM), these cylindrical steel bars offer customizable dimensions (3.0mm–30mm thickness, custom lengths/widths) and advanced surface treatments (cold rolled, coated, hot rolled). Ideal for structural components, machinery parts, and tooling applications, they balance strength, durability, and adaptability.

Technical specifications

FeatureSpecificationBenefit
Material GradeS35C, S45C, SK3, S55C, ST37, Mild Steel, SS400, Q235, S235JR, A36High-strength carbon steel for diverse industrial applications.
FinishCold rolled (smooth surface), Hot rolled (textured surface), CoatedEnhanced corrosion resistance and precision surface finishes.
Thickness Range3.0mm–4mm, 4mm–30mmAdaptable to projects requiring thin or heavy-duty structural support.
Tolerance±1%Ensures precise fitment in machinery and precision engineering.
Standards ComplianceGB, AISI, DIN, JIS, ASTMGlobal compatibility for international manufacturing and construction.
Processing ServicesCutting, decoiling, bending, welding, punchingStreamlined integration into custom assemblies and complex structures.

Customization guide

Adjustable parameters:

  • Length/Width/Thickness: Tailored to meet project-specific dimensions.
  • Surface Treatment: Choose between cold-rolled (smooth), hot-rolled (durable), or coated (corrosion-resistant) finishes.
  • Material Grade: Select grades like S45C for high strength or S35C for cost-effective applications.

Get inspired

With uniform cylindrical precision and customizable material properties, these steel bars excel in structural frameworks, mechanical shafts, and tooling components. For instance, cold-rolled S45C bars provide enhanced surface quality for precision machinery, while hot-rolled Q235 bars offer cost-effective solutions for heavy-duty construction.

Choose your model

ParameterBase ModelAdvanced ModelPro Model
Tensile Strength400 MPa+15% (460 MPa)*+30% (520 MPa)*
Surface Finish QualityMatte (hot rolled)Smooth (cold rolled)Premium coated
Customization FlexibilityBasic (thickness)Extended (shape/finish)Full (all parameters)

Supplier's note

  1. Three Technical Breakthroughs:

    • Precision Tolerance (±1%): Ensures seamless integration into automated machinery.
    • Multi-Standard Compliance: Meets global benchmarks (e.g., ASTM A36 for U.S. projects, JIS S35C for Asian markets).
    • Hybrid Processing: Combines cold/hot rolling for optimal strength-to-weight ratios.

  2. Optimal Version Selection:

    • Base Model: Ideal for general construction (e.g., scaffolding) where cost efficiency is prioritized.
    • Advanced Model: Suited for mechanical parts (e.g., engine shafts) requiring smooth surfaces and moderate strength.
    • Pro Model: Best for high-stress applications (e.g., offshore drilling equipment) needing 520 MPa tensile strength and corrosion-resistant coatings.

*Comparative performance vs. industry benchmarks.

Frequently asked questions

  • Which carbon steel grade (S35C, S45C, or ST37) is best for high-strength machinery parts?

  • Cold rolled vs hot rolled steel bars: Which is better for precision engineering applications?

  • Can these carbon steel round bars be customized to specific lengths and diameters for machinery components?

  • Are these steel rods compliant with ASTM A36 or DIN standards for structural applications?

  • What surface treatments are available to enhance corrosion resistance for outdoor use?

  • What processing services are available for these steel rods to streamline manufacturing?

  • How does the cold rolled finish benefit machining and fabrication processes?

  • Are these steel rods suitable for corrosive environments like marine infrastructure?

Product comparison

CategoryUsage ScenariosCharacteristicsAdvantagesDisadvantages
Cold Rolled Steel Round BarGeneral manufacturing, machinery partsSurface roughness: Ra ≤ 1.6 μm (ISO 4287) ▲1
Tolerance: ±1%
Thickness: 3.0–30 mm		Smooth finish for machining ▲1
Customizable lengths/widths ▲1		Higher cost than hot-rolled ▲1
No inherent corrosion resistance
Hot Rolled Steel Round BarConstruction, heavy machinerySurface roughness: Ra ≤ 5 μm ▲0
Tolerance: ±2% ▲0
Thickness: 6–50 mm		Lower cost ▲0
Thicker sizes available ▲0		Rough surface ▲0
Less precision ▲0
Coated Steel Round BarCorrosive environments (e.g., offshore)Zinc coating: ASTM A153 ▲2
Surface roughness: Ra ≤ 1.0 μm ▲2
Tolerance: ±0.5% ▲2		Enhanced corrosion resistance ▲2
Smoother finish ▲2		Higher cost ▲2
Coating may peel under stress ▲2
High-Tolerance Steel Round BarPrecision machinery (e.g., aerospace)Tolerance: ±0.5% ▲3
Surface roughness: Ra ≤ 0.8 μm ▲3
Thickness: 3–25 mm		Ultra-precise dimensions ▲3
Smoothest finish ▲3		Most expensive ▲3
Limited thickness range ▲3
Custom-Processed Steel Round BarBespoke machinery, toolingOn-demand processing: cutting, bending, welding ▲4
Surface treatments: cold/hot rolled ▲4		Tailored to exact specs ▲4
Reduced assembly time ▲4		Higher per-unit cost ▲4
Longer lead times ▲4
Multi-Standard Compliant Round BarGlobal projects (e.g., international construction)Meets GB, ASTM, DIN, JIS ▲5
Tolerance: ±0.8% ▲5
Thickness: 4–30 mm		Universal compliance ▲5
Flexible tolerance options ▲5		Highest price ▲5
Complex certification process ▲5

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