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Stainless Steel Coil
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Duplex Stainless Steel Coil S31803/S32205

Duplex Stainless Steel Coil S31803/S32205

Brand Name: KORER
Model Number: Stianless Steel Coils
MOQ: 1 Metric Tons Per Size
Price: Negotiable
Payment Terms: T/T L/C
Supply Ability: 10000 Metric Tons Per Year
Detail Information
Place of Origin:
China
Certification:
ISO 9001 And Manufacture License Of Pressure Tube
Product Name:
Stianless Steel Coils
Material Grade:
S31803/S32205 /S32750/304/L 316L 321 1.4301 1.4404
Brand:
KORER
Delivery Condition:
2B
Standard:
ASME SA240
Packaging Details:
Wooden Cases Or Seaworthy Bundle
Supply Ability:
10000 Metric Tons Per Year
Product Description

Duplex Stainless Steel Coil S31803/S32205

Introduction:
The S31803 and S32205 duplex stainless steel coils are high-performance materials designed for industrial, chemical, petrochemical, and offshore applications where superior corrosion resistance and high strength are critical. Featuring a duplex microstructure combining ferritic and austenitic phases, these coils provide excellent resistance to pitting, crevice corrosion, and stress corrosion cracking, while maintaining high tensile strength and durability. The continuous coil form enables efficient fabrication, cutting, and shaping, making it ideal for pipelines, tanks, heat exchangers, and structural applications. The pickled and passivated surface ensures enhanced corrosion resistance and a smooth, cleanable finish, suitable for industrial and chemical process environments.

Material Table:

Material Grade Description Key Properties
S31803 Duplex Stainless Steel Ferritic-Austenitic duplex stainless steel Excellent corrosion resistance, high tensile strength, suitable for chemical, petrochemical, and offshore applications
S32205 Duplex Stainless Steel Super duplex stainless steel Superior pitting and crevice corrosion resistance, high strength, ideal for chloride-rich environments

Specifications Table:

Parameter Value / Range
Standard ASTM A240 / EN 10088
Coil Type Continuous Coil
Thickness 0.5mm – 6mm
Width 500mm – 1500mm
Coil Weight 1 ton – 10 tons
Surface Finish Pickled & Passivated / 2B / Polished
Material S31803 / S32205 Duplex Stainless Steel

Manufacturing Process Table:

Step Description
Raw Material Selection Premium S31803 or S32205 duplex stainless steel slabs
Hot Rolling Rolled to desired thickness
Cold Rolling Precision rolling for uniform dimensions and smooth surface
Heat Treatment Solution annealing to optimize mechanical properties and corrosion resistance
Surface Treatment Pickling and passivation for corrosion-resistant finish
Inspection & Testing Thickness, width, surface, and mechanical quality checks
Packaging Protective packaging to prevent scratches and deformation during storage and transport

Uses / Applications Table:

Industry / Application Description
Chemical Industry Tanks, piping, and process equipment for corrosive chemicals
Petrochemical Industry High-pressure and corrosion-resistant pipelines
Offshore & Marine Applications Seawater and chloride-rich piping and structural components
Heat Exchangers Tubing for industrial heat transfer systems
Industrial Fabrication Structural panels, enclosures, and machinery requiring corrosion resistance

Advantages:

  • Superior Corrosion Resistance: Exceptional performance in chloride, seawater, and chemical environments.
  • High Strength: Duplex microstructure provides higher tensile strength than standard austenitic stainless steels.
  • Durable & Long-Lasting: Minimizes maintenance and ensures long-term service life.
  • Smooth Surface Finish: Pickled and passivated surface reduces scaling, fouling, and contamination.
  • Versatile Applications: Suitable for chemical, petrochemical, offshore, heat exchanger, and industrial fabrication projects.

FAQ:

  • Q: Can S31803/S32205 duplex stainless steel coils be used in seawater environments?
    A: Yes, both grades offer excellent chloride and seawater corrosion resistance, suitable for offshore applications.
  • Q: Are custom thicknesses and coil sizes available?
    A: Yes, thickness, width, and coil weight can be tailored to meet specific project requirements.
  • Q: Is it suitable for chemical and petrochemical plants?
    A: Absolutely, these duplex coils are widely used for tanks, piping, and process equipment in chemical and petrochemical industries.
  • Q: How is quality ensured?
    A: Coils undergo dimensional, surface, and mechanical inspections according to ASTM and EN standards.

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