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Premium 904L Super Austenitic Stainless Steel Rectangular Pipes
Product Name: Large Diameter 904L (UNS N08904) Stainless Steel Rectangular Pipe
Category: Super Austenitic Stainless Steel Pipes / Industrial Structural Pipes
Category: Super Austenitic Stainless Steel Pipes / Industrial Structural Pipes
Product Overview:
Engineered for the most demanding corrosive environments, our Large Diameter 904L (UNS N08904 / EN 1.4539) Stainless Steel Rectangular Pipes are manufactured from premium super austenitic stainless steel. Featuring a high alloy composition of 25% Nickel, 20% Chromium, 4.5% Molybdenum, and 2% Copper, these pipes offer exceptional resistance to pitting, crevice corrosion, and stress corrosion cracking. They are the ideal structural and piping solution for marine engineering, flue gas desulfurization (FGD) systems, and chemical processing plants where standard 316L stainless steels fail.
Engineered for the most demanding corrosive environments, our Large Diameter 904L (UNS N08904 / EN 1.4539) Stainless Steel Rectangular Pipes are manufactured from premium super austenitic stainless steel. Featuring a high alloy composition of 25% Nickel, 20% Chromium, 4.5% Molybdenum, and 2% Copper, these pipes offer exceptional resistance to pitting, crevice corrosion, and stress corrosion cracking. They are the ideal structural and piping solution for marine engineering, flue gas desulfurization (FGD) systems, and chemical processing plants where standard 316L stainless steels fail.
Key Features:
- Superior Corrosion Resistance: With a Pitting Resistance Equivalent Number (PREN) >34, our 904L pipes provide outstanding protection against seawater, halide media, and acidic environments (such as sulfuric and phosphoric acid).
- Excellent Weldability & Fabrication: Designed for easy fabrication, these pipes can be readily welded using standard TIG/MIG methods, ensuring robust structural integrity in complex assemblies. The low carbon content (≤0.02%) minimizes the risk of intergranular corrosion after welding.
- Wide Temperature Range: Suitable for extreme conditions, maintaining stable performance from cryogenic temperatures (-196℃) up to 400℃.
- Customizable Dimensions: Available in large diameter rectangular profiles with various wall thicknesses to meet specific structural and flow requirements.
Applications:
Widely used in flue gas desulfurization (FGD) systems, seawater desalination plants, marine hydraulic piping, chemical reactors, heat exchangers, and pollution control equipment.
Widely used in flue gas desulfurization (FGD) systems, seawater desalination plants, marine hydraulic piping, chemical reactors, heat exchangers, and pollution control equipment.
Why Choose Our 904L Pipes?
- Unbeatable Durability: Resists pitting and crevice corrosion in harsh chloride-rich environments, far outperforming 316L.
- Structural Integrity: High nickel and molybdenum content provides superior strength without compromising toughness, ideal for heavy-duty structural applications.
- Cost-Effective Solution: Offers performance comparable to high-end nickel alloys at a fraction of the cost.
- Versatile Profiles: Available in large-diameter rectangular shapes, perfect for both fluid transport and structural support frames.
Technical Specifications (Customizable):
- Material: 904L / UNS N08904 / EN 1.4539 / 00Cr20Ni25Mo4.5Cu
- Product Type: Rectangular Pipe (Seamless or Welded)
- Size Range: Large diameter profiles (Customizable side lengths and wall thicknesses)
- Chemical Composition: Ni: 23-28%, Cr: 19-23%, Mo: 4-5%, Cu: 1-2%
- Mechanical Properties: Tensile Strength ≥490 MPa, Yield Strength ≥215 MPa
- Surface Finish: Pickled, Polished, or as required
- Standard: ASTM B673, B674, DIN 1.4539