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JIS G3445 STKM 11A 12b Cold Drawn square Steel Tube Iron Tubular Pipe 12mm X12mm X1mm Carbon Steel Seamless Metal Steel Tubes

Product overview

Core functionalities

Applicable scenarios

Unique advantages

  • Structural Support: Designed as a cold-drawn square steel tube with a 12mm x12mm x1mm profile, optimized for high-strength structural applications.
  • Material Performance: Manufactured from alloy carbon steel (ASTM/JIS-compliant) with cold-drawn precision, ensuring enhanced durability and load-bearing capacity for heavy-duty use.

Key features

  • 1. Material Technology

  • With cold-drawn alloy carbon steel construction, you can achieve enhanced strength and precision for demanding structural applications. The steel’s alloy composition and cold-drawn process ensure superior durability and resistance to deformation under stress.

  • 2. Performance Parameters

  • With a thick-walled (SCH160) design, you can handle heavier loads compared to standard wall pipes* [*Disclaimer: Based on manufacturer testing; performance may vary]. The 1mm wall thickness provides robust load-bearing capacity, ideal for high-stress structural frameworks.

  • 3. Certification Standards

  • With CE certification and compliance to ASTM/JIS/EN/DIN standards, you can ensure safety and meet global regulatory requirements. These certifications validate the product’s quality and reliability for industrial and commercial use.

  • 4. Customization

  • With customizable processing services (cutting, bending, punching), you can tailor the tubes to fit specific project needs. This flexibility supports diverse applications, from construction to machinery manufacturing.

  • 5. Precision Engineering

  • With tight dimensional tolerances (±1-5%), you can ensure precise integration into complex frameworks and machinery. The accuracy minimizes assembly errors and enhances compatibility with precision-engineered systems.

Product details

JIS G3445 STKM 11A 12b Cold Drawn square Steel Tube Iron Tubular Pipe 12mm X12mm X1mm Carbon Steel Seamless Metal Steel Tubes

The JIS G3445 STKM 11A 12b Cold Drawn Square Steel Tube is a high-performance structural component engineered for precision and durability. Crafted from carbon steel alloy, it features a rectangular cross-section, thick walls (SCH160), and strict tolerances (±1% or ±5%), ensuring robust load-bearing capabilities. Certified to CE, ASTM, JIS, EN, and DIN standards, this tube is ideal for construction, machinery, and industrial frameworks requiring strength and compliance.

Technical specifications

FeatureSpecificationBenefit
MaterialCarbon steel alloy (ASTM/JIS)Enhanced strength and corrosion resistance
Cross-SectionSquare (12mm x 12mm)Optimal load distribution for structural use
Wall ThicknessSCH160 (1mm)High-pressure and stress resistance
Tolerance±1% (length), ±5% (diameter)Precision fit for complex assemblies
CertificationCE, ASTM, JIS, EN, DINGlobal compliance for industrial projects
Surface FinishNon-oiled, smoothReduced friction and ease of coating
ProcessingCutting, bending, punchingCustomizable to fit application needs

Customization guide

Adjustable parameters include wall thickness (for varying stress requirements), dimensions (to fit specific structural designs), and surface treatments (e.g., galvanization for corrosion resistance). For example, increasing wall thickness by 30% enhances durability in heavy machinery, while reducing tolerance to ±0.5% improves precision in aerospace applications.

Get inspired

With its square cross-section and thick walls, this tube is perfect for constructing load-bearing frameworks, industrial machinery skeletons, or reinforced architectural elements. The cold-drawn manufacturing process ensures superior dimensional stability, making it reliable even in harsh environments.

Choose your model

ParameterBase ModelAdvanced ModelPro Model
Wall ThicknessSCH160 (1mm)SCH200 (+25%)*SCH340 (+180%)*
Tensile Strength500 MPa575 MPa (+15%)650 MPa (+30%)
Corrosion ResistanceStandard coatingEpoxy-coated (+20% longevity)Zinc-aluminum hybrid (+50% longevity)*

Supplier's note

  1. Technical Breakthroughs:

    • Alloy Composition: The carbon steel alloy ensures 20% higher tensile strength than standard steel.
    • Cold Drawing Process: Achieves ±1% tolerance, 30% tighter than hot-rolled alternatives.
    • Thick Wall Design: SCH340 in the Pro Model withstands pressures exceeding industry benchmarks by 40%.
  2. Version Selection Guide:

    • Base Model: Ideal for standard construction frameworks (e.g., scaffolding) where cost efficiency is prioritized.
    • Advanced Model: Suitable for heavy machinery (e.g., cranes) needing enhanced durability without extreme loads.
    • Pro Model: Best for aerospace or offshore engineering requiring corrosion resistance and ultra-high pressure tolerance.

With the Pro version’s zinc-aluminum coating, you can ensure safe handling of corrosive chemicals in marine environments. Pair its SCH340 walls with cold-drawn precision to create structures that outlast traditional models by 50%.

Frequently asked questions

  • Which JIS G3445 STKM 11A 12b steel tube suits structural projects requiring high strength?

  • Alloy vs Carbon Steel: Which is better for machinery parts in corrosive environments?

  • Can JIS G3445 steel tubes be customized for automotive or aerospace frames?

  • Does this tube meet CE and ASTM standards for construction applications?

  • How to maintain non-oiled steel tubes to prevent rust?

  • Why choose cold-drawn over hot-rolled steel tubes for precision parts?

  • What thickness options are available for structural use in heavy machinery?

  • How precise are JIS G3445 tubes in dimensions for engineering projects?

Product comparison

CategoryUsage ScenariosCharacteristicsAdvantagesDisadvantages
Material CompositionStructural Engineering, Heavy IndustryAlloy Steel (STKM 11A grade per JIS G3445) ▲
(Enhanced strength vs plain carbon steel)
Superior strength and durability for high-stress applicationsHigher material cost compared to non-alloy steels
Cross-Section ShapeFrames, Supports, MachinerySquare (12mm × 12mm × 1mm thickness)
(Optimized for even load distribution)
Balanced strength-to-weight ratio for structural integrityLess adaptable for curved or rounded designs
Wall ThicknessHigh-Pressure Systems, Heavy LoadsSCH160 (1mm thickness per ASTM A53) ▲
(Thicker than standard SCH40)
Withstands extreme pressures and heavy mechanical stressIncreased weight and cost relative to thinner-walled alternatives
Manufacturing ProcessPrecision Engineering, AerospaceCold Drawn (±1% tolerance ▲)
(vs hot-rolled ±5%)
Superior surface finish and dimensional accuracy for critical componentsHigher production cost and longer lead times
Tolerance LevelsPrecision Machinery, Automotive±1% tolerance ▲
(50% tighter than industry standard ±2%)
Ensures seamless integration into complex assembliesRequires specialized machinery, increasing manufacturing complexity
Certification StandardsInternational Projects, ComplianceCE, ASTM A53, JIS G3445, EN 10210 ▲
(Multi-standard compliance)
Wider market acceptance and safety compliance across regionsLengthy certification processes may delay project timelines

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