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Steel Round Bars
  • C35 Astm A322 4140 20mncr5 S45cr Steel Round bar Dowel bar
  • C35 Astm A322 4140 20mncr5 S45cr Steel Round bar Dowel bar
  • C35 Astm A322 4140 20mncr5 S45cr Steel Round bar Dowel bar
  • C35 Astm A322 4140 20mncr5 S45cr Steel Round bar Dowel bar
  • C35 Astm A322 4140 20mncr5 S45cr Steel Round bar Dowel bar
  • C35 Astm A322 4140 20mncr5 S45cr Steel Round bar Dowel bar
C35 Astm A322 4140 20mncr5 S45cr Steel Round bar Dowel bar

C35 Astm A322 4140 20mncr5 S45cr Steel Round bar Dowel bar

  • 5 - 24 Tons
    $580
  • 25 - 49 Tons
    $550
  • >= 50 Tons
    $520

Customization:

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

C35 Astm A322 4140 20mncr5 S45cr Steel Round bar Dowel bar

Product overview

Core functionalities

Applicable scenarios

Unique advantages

  • Structural Support & Dowel Applications: Designed as a high-strength structural steel bar for reinforcement in construction, bridges, and machinery. The round shape and free-cutting steel properties enable precise machining for dowel bars, anchor rods, and connectors.
  • Versatile Processing: Supports bending, cutting, welding, and punching, allowing adaptation to diverse fabrication needs.

Key features

  • 1. Material Technology

    • With galvanized alloy steel, you can ensure corrosion resistance and durability in harsh environments. ~30% longer lifespan than non-galvanized steel*.

  • 2. Interactive Design

    • With customizable processing services (bending, cutting, welding), you can tailor the bars to specific project requirements, enhancing adaptability*.

  • 3. Performance Parameters

    • With 1% dimensional tolerance and free-cutting steel composition, you can achieve precise fits and

Product details

C35 Astm A322 4140 20mncr5 S45cr Steel Round bar Dowel bar

The C35 ASTM A322 Steel Round Bar is a high-performance structural component engineered for precision and durability. Crafted from alloy and carbon steel (Grade 4140), it combines exceptional strength with corrosion resistance through galvanization. With a 150mm outer diameter and ±1% tolerance, these rods are ideal for demanding applications like reinforced concrete, machinery fabrication, and heavy industrial frameworks.

Technical specifications

FeatureSpecificationBenefit
MaterialAlloy Steel (Grade 4140), Carbon SteelHigh strength and fatigue resistance
Outer Diameter150mm ±1%Precision fit for engineering projects
Surface TreatmentGalvanized30% longer corrosion resistance vs. standard
ManufacturingHot RolledOptimal grain structure for mechanical use
Tolerance±1%Ensures seamless assembly in machinery
CertificationASTM A322, AISI StandardsGlobal compliance for industrial applications
ProcessingBending, Cutting, Welding, PunchingCustomizable for diverse fabrication needs

Customization guide

Adjustable diameter and length to meet specific structural requirements. Custom surface treatments like galvanizing or premium coatings for enhanced corrosion resistance. Tailored tolerance ranges (from ±1% to ±0.5%) to accommodate precision engineering needs.

Get inspired

Our C35 ASTM A322 Steel Round Bars are engineered for versatility and reliability. Whether reinforcing concrete structures, fabricating machinery parts, or constructing heavy-duty frameworks, these bars deliver unmatched strength and adaptability. Their galvanized surface ensures longevity in harsh environments, while precise tolerances and customizable processing options make them ideal for both standard and specialized applications.

Choose your model

ParameterBase ModelAdvanced ModelPro Model
Tensile Strength650 MPa+15% (748 MPa)+30% (845 MPa)*
Corrosion ResistanceStandard GalvanizationEnhanced Epoxy CoatingPremium Zinc-Aluminum Coating
Precision Tolerance±1%±0.8%±0.5%

Supplier's note

  1. Technical Breakthroughs:

    • 4140 Alloy Steel Composition: Delivers 20% faster cutting speeds than traditional carbon steels due to free-cutting properties.
    • Advanced Galvanization: Offers 30% longer corrosion resistance than conventional galvanized steel, ideal for marine or industrial environments.
    • Precision Hot Rolling: Achieves ±0.5% tolerance in Pro models, exceeding industry standards by 50% for ultra-precise applications.

  2. Version Selection Guide:

    • Base Model: Best for general construction and machinery parts where cost efficiency is key. Its ±1% tolerance ensures reliable performance in standard frameworks.
    • Advanced Model: Suited for automotive and aerospace applications requiring tighter tolerances (±0.8%) and enhanced corrosion resistance via epoxy coating.
    • Pro Model: Designed for heavy industrial equipment and extreme environments. The Pro’s 845 MPa tensile strength and premium coating enable safe handling of corrosive chemicals and high-stress loads.

*Pro Model’s strength surpasses ASTM A322 benchmarks by 30%.

Frequently asked questions

  • Which C35 Astm A322 steel round bar model is best for structural steel bar applications?

  • What’s the difference between alloy steel and carbon steel in C35 Astm A322 round bars?

  • Can C35 Astm A322 steel round bars be customized for specific projects?

  • Is the C35 Astm A322 steel round bar compliant with international standards?

  • How should I handle and store C35 Astm A322 steel round bars to prevent damage?

  • Which steel round bar suits heavy machinery parts fabrication?

  • Can C35 Astm A322 steel round bars be welded for structural assemblies?

  • What makes the galvanized surface of C35 Astm A322 bars ideal for outdoor use?

Product comparison

CategoryUsage ScenariosCharacteristicsAdvantagesDisadvantages
Material CompositionStructural EngineeringASTM A322 compliant alloy steel (Base) ▲ Advanced: 4140 grade (0.45% C, 1.0% Cr)Base meets industry standards; Advanced offers enhanced strength/corrosion resistanceAdvanced requires specialized welding techniques
Diameter & ToleranceLarge-scale ConstructionIndustry: Up to 100mm ▲ Base: 150mm (±1.5mm tolerance, ISO 286-2) ▲ Advanced: Custom sizesBase meets most needs; Advanced allows oversized projectsLarger diameters may need special handling
Surface TreatmentMarine/Outdoor ApplicationsIndustry: Uncoated ▲ Base: Hot-dip galvanized (ASTM A153) ▲ Advanced: Double-layer coatingBase provides basic corrosion protection; Advanced lasts 10+ years outdoorsAdvanced requires more frequent inspections
Processing FlexibilityCustom FabricationIndustry: Basic cutting ▲ Base: Bending/Welding ▲ Advanced: Precision Punching/ThreadingBase supports standard processes; Advanced enables complex designsAdvanced processes may increase lead time and cost
Mechanical StrengthHigh-Stress MachineryIndustry: 500 MPa yield ▲ Base: 600 MPa (ASTM A322) ▲ Advanced: 700 MPa (heat-treated)Higher strength for heavy loads; Advanced resists deformationAdvanced may have reduced ductility; requires careful handling
MachinabilityTooling & Precision PartsIndustry: Standard carbon steel ▲ Base: Free-cutting (50% chip breakage) ▲ Advanced: Sulfur-added alloyBase reduces tool wear; Advanced improves machining efficiency by 30%Advanced requires specialized lubricants and sharper tools

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