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Premium Stainless Steel Coiled Tube | Hot Rolled 2B/8K Finish

Premium Stainless Steel Coiled Tube | Hot Rolled 2B/8K Finish

$1,400.00 SGD
$1,400.00 SGD
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Premium Stainless Steel Coiled Tube | Hot Rolled 2B/8K Finish

​Product Specifications

Category Details
​Material Grades 304 / 304L / 316L / 321 / 317L
​Outer Diameter (O.D) 3/16"–1 1/4" (4.76 mm–31.8 mm)
​Wall Thickness (W.T) 0.028"–0.083" (0.7 mm–2.11 mm)
​Tolerance O.D: ±0.08 mm (0.00315″); W.T: ±10%
​Hardness Soft state (HRB ≤ 90)
​Surface Finish ​Hot Rolled 2B/8K Finish: Smooth, reflective, and corrosion-resistant
​Standards ASTM (ASME) SA/A312/A213/A269, DIN, GB, JIS
​Packaging Plywood spools/boxes for safe maritime/air transport

​Key Properties

  1. ​Tensile Strength
    ​Stainless steel coiled tube exhibits a tensile strength of ​**≥520 MPa**, ensuring structural integrity under high stress

    . This property is critical for applications like hydraulic systems and industrial piping, where resistance to deformation is essential.

     

  2. ​Bend Strength
    The material’s ductility allows bending without cracking. For ​304 stainless steel coil, the minimum bend radius is 1x tube diameter for thin-walled variants, making it ideal for complex installations.

     

  3. ​Marking Method
    Tubes are laser-marked or embossed with customer-specified details (e.g., grade, batch number).

    ASTM-compliant identification ensures traceability and compliance.

     

  4. ​Weight Calculation
    Weight per coil is calculated using the formula:

    Where  (density of 304 stainless steel).

    Standard coils weigh 80–100 kg, but ​rewinding stainless steel coils into smaller units (e.g., <28 kg) optimizes cost and handling.

     

  5. ​Stainless Steel Rusting: Causes & Prevention
    Despite its corrosion resistance, ​stainless steel coiled tube may rust under:

    • ​Chloride Exposure: Coastal or chemical environments degrade the passive chromium oxide layer.
    • ​Mechanical Damage: Scratches or welding defects expose raw metal to oxidation.
    • ​Improper Cleaning: Residual contaminants accelerate pitting.
      Solutions include using higher-grade alloys (e.g., 316L for chloride-rich settings) and ensuring surface passivation.

​Manufacturing Process

Stage Description
​Cold Drawing Enhances dimensional precision and surface smoothness.
​Vacuum Annealing Bright annealing in oxygen-free environments prevents scaling, retaining a ​clean, glossy finish.
​Rewinding ​Rewinding stainless steel coils into compact spools ensures tangle-free storage and transport.
​Quality Control ISO 9001-certified inspections for hardness, weld integrity, and dimensional accuracy.

​Applications

  • ​Hydraulic/Pneumatic Systems: Seamless design reduces leakage risks.
  • ​Food & Pharma: ​304 stainless steel coil meets sanitary standards for clean fluid transport.
  • ​Architecture: Aesthetic 2B/8K finishes suit decorative installations.

​Why Choose Our Stainless Steel Coiled Tubes?

  1. ​Superior Durability: With a lifespan exceeding 30 years, our tubes resist corrosion, bending, and wear.
  2. ​Customization: Tailored dimensions (OD, WT, length) and ​rewinding stainless steel coils into lightweight units (<30 kg) reduce waste.
  3. ​Global Compliance: ASTM, DIN, and JIS certifications guarantee industrial-grade quality.
  4. ​Eco-Friendly: Zero formaldehyde emissions and 100% recyclable material align with sustainable practices.
  5. ​Cost Efficiency: Competitive pricing per meter/foot, with bulk discounts for large orders.
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