304 Stainless Steel Seamless Pipe
304 Stainless Steel Seamless Pipe
Product Overview
304 stainless steel seamless pipe, known as the most widely used austenitic stainless steel piping, has become an indispensable foundational material across petroleum, chemical, food, pharmaceutical, and machinery manufacturing industries due to its excellent corrosion resistance, superior mechanical properties, and extended service life.
Material Specifications
304 stainless steel, also known as "18/8 stainless steel" (approx. 18% Chromium, 8% Nickel), strictly complies with international standards:
Element | Content Range |
|---|---|
Carbon (C) | ≤ 0.08% |
Silicon (Si) | ≤ 1.00% |
Manganese (Mn) | ≤ 2.00% |
Phosphorus (P) | ≤ 0.045% |
Sulfur (S) | ≤ 0.030% |
Chromium (Cr) | 18.00-20.00 per cent |
Nickel (Ni) | 8.00-11.00 per cent |
Core Properties
Superior Corrosion Resistance
Relying on the dense chromium oxide passivation film formed on its surface, it performs excellently in oxidizing environments, dilute nitric acid, room-temperature dilute sulfuric acid, and most organic acids. Food-grade characteristics enable direct contact with food and potable water, meeting hygiene and safety standards.
Reliable Heat Resistance
Maintains stable mechanical properties and oxidation resistance in environments up to 870°C, making it suitable for heat exchangers, boilers, and other high-temperature applications.
Excellent Mechanical Properties
Tensile Strength: ≥520 MPa
Yield Strength: ≥210 MPa
Elongation: ≥35% (heat-treated state)
Weld-Free Structure
Manufactured through hot-rolling perforation, cold-rolling, and solution heat treatment processes, eliminating weld defects, ensuring uniform wall thickness and enhanced pressure-bearing capacity-ideal for high-pressure fluid transmission systems.
Applications
● Petrochemical: Process piping, fluid transfer lines
● Food & Beverage: Sanitary pipelines, beer/dairy transport
● Pharmaceutical: Sterile fluid systems, clean piping
● Aerospace: Hydraulic lines, structural components
● Architecture: Structural frameworks, decorative trims
● Water Treatment: Industrial water supply systems
Key Advantages
◎ Long Service Life: Wear-resistant, corrosion-resistant, heat-stress resistant, reducing maintenance and replacement costs.
◎ High-Pressure Handling: Weld-free structure ensures uniform pipe integrity, suitable for steam, compressed air, and other high-pressure systems.
◎ Hygiene Compliance: Smooth inner wall resists scaling, contamination-free, meeting food-grade requirements.
◎ Excellent Workability: Easy to bend, cut, and weld; customizable dimensions and surface finishes (pickling, polishing, annealing, etc.).
◎ Low Lifecycle Cost: Higher initial investment than ordinary carbon steel, but durability significantly reduces long-term comprehensive costs.
Why Choose Us?
Strict production and testing in accordance with GB, ASTM, API and other international standards.
Material Test Reports (MTR) provided to ensure full quality traceability.
Various surface treatment options: pickling, polishing, bright annealing, passivation, etc.
Customizable lengths, end types (plain, beveled, threaded), and special specifications.
Comprehensive packaging and logistics services ensuring safe product delivery
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