ASTM A312 TP304/304L Stainless Steel Pipe
ASTM A312 TP304/304L stainless steel pipes are widely used across various industries due to their excellent corrosion resistance, high strength, and versatility. Riyaarth Overseas supplies premium-quality ASTM A312 TP304/304L stainless steel pipes, ensuring durability and efficiency in demanding environments such as chemical processing, food and beverage, pharmaceuticals, and oil & gas industries. These pipes offer superior weldability, oxidation resistance, and mechanical strength, making them ideal for applications requiring long-term performance and reliability.
Key Features of ASTM A312 TP304/304L Stainless Steel Pipe
Superior Corrosion Resistance:
ASTM A312 TP304/304L pipes exhibit excellent resistance to oxidation, pitting, and crevice corrosion in a wide range of environments. Their low carbon content in TP304L enhances resistance to intergranular corrosion, making them suitable for welding applications without post-weld heat treatment.
High Strength and Durability:
These stainless steel pipes offer a tensile strength of 75,000 psi (515 MPa) and yield strength of 30,000 psi (205 MPa), ensuring robustness under high-stress conditions. Their excellent mechanical properties make them ideal for high-pressure and high-temperature applications.
Versatile Applications:
Due to their superior strength and corrosion resistance, ASTM A312 TP304/304L pipes are widely used in food processing, chemical plants, heat exchangers, and marine environments. They are also suitable for structural and decorative applications in architectural projects.
Excellent Weldability and Formability:
These pipes can be easily welded using standard fusion and resistance welding techniques. The low-carbon variant (TP304L) minimizes carbide precipitation during welding, reducing the risk of sensitization and enhancing long-term performance.
Chemical Composition
Element | Composition (%) |
Carbon (C) | 0.08 max (TP304), 0.03 max (TP304L) |
Manganese (Mn) | 2.00 max |
Phosphorus (P) | 0.045 max |
Sulfur (S) | 0.030 max |
Silicon (Si) | 1.00 max |
Chromium (Cr) | 18.0 – 20.0 |
Nickel (Ni) | 8.0 – 10.5 |
Mechanical Properties
Property | Value |
Tensile Strength | 75,000 psi (515 MPa) min |
Yield Strength | 30,000 psi (205 MPa) min |
Elongation | 35% min |
Hardness (Brinell) | 201 max |
Manufacturing Process
ASTM A312 TP304/304L stainless steel pipes are produced using the highest manufacturing standards to ensure quality and performance. The process includes:
- Raw Material Selection: High-quality stainless steel billets are chosen to maintain consistency and strength.
- Hot Forming: The billets are heated and rolled into seamless tubes or welded to form pipes.
- Cold Drawing (if required): Ensures precision in dimensions and enhances mechanical properties.
- Heat Treatment: Pipes undergo annealing to improve ductility and stress relief.
- Surface Finishing: Pipes are pickled and passivated to enhance corrosion resistance.
- Testing and Inspection: Pipes undergo rigorous quality checks, including hydrostatic testing, ultrasonic testing, and chemical analysis.
Common Applications
Chemical and Petrochemical Industry:
ASTM A312 TP304/304L pipes are widely used in processing plants due to their superior resistance to corrosive chemicals, acids, and extreme temperatures. Their durability ensures long-lasting performance in handling aggressive substances.
Food and Beverage Industry:
These stainless steel pipes are ideal for transporting food-grade liquids and gases, ensuring hygiene and preventing contamination. Their smooth surface prevents bacterial growth, making them suitable for dairy, breweries, and beverage industries.
Pharmaceutical and Medical Industry:
Used in cleanroom environments and pharmaceutical manufacturing, these pipes meet strict sanitary regulations. Their non-reactive nature ensures safe transport of sensitive compounds and sterile fluids.
Oil & Gas and Marine Applications:
Due to their corrosion resistance and high strength, these pipes are commonly used in offshore drilling, marine environments, and pipelines transporting oil, gas, and chemicals under extreme conditions.
Construction and Architecture:
ASTM A312 TP304/304L pipes are used in structural frameworks, handrails, and decorative applications due to their aesthetic appeal, durability, and resistance to environmental exposure.
Available Sizes and Dimensions
Pipe Size (NPS) | Wall Thickness (Sch 10) | Wall Thickness (Sch 40) | Wall Thickness (Sch 80) |
1/2″ | 0.065″ | 0.109″ | 0.147″ |
3/4″ | 0.065″ | 0.113″ | 0.154″ |
1″ | 0.065″ | 0.133″ | 0.179″ |
2″ | 0.083″ | 0.154″ | 0.218″ |
4″ | 0.120″ | 0.237″ | 0.337″ |
Testing and Quality Standards
To ensure compliance with industry standards, ASTM A312 TP304/304L stainless steel pipes undergo extensive testing, including:
- Hydrostatic Testing: Verifies pressure retention capability.
- Non-Destructive Testing (NDT): Includes ultrasonic and eddy current testing for defect detection.
- Chemical Analysis: Confirms material composition compliance.
- Mechanical Testing: Assesses tensile strength, elongation, and hardness.
Surface Finish and Coatings
To enhance longevity and application-specific performance, various surface treatments are available:
- Pickled & Passivated: Improves corrosion resistance by removing surface contaminants.
- Polished Finish: Available in different grades, including mirror and satin finishes for decorative use.
- Electropolishing: Enhances cleanliness and resistance to bacterial growth in hygienic applications.
Quality Assurance & Packaging
Riyaarth Overseas ensures that every ASTM A312 TP304/304L stainless steel pipe meets the highest quality standards. Our stringent inspection and quality control processes guarantee exceptional performance in industrial applications.
Certifications & Standards:
- Compliant with ASTM, ASME, ISO, and API standards.
- Approved for high-pressure, high-temperature, and sanitary applications.
Packaging:
- Pipes are securely packed in wooden crates, bundles, or plastic end caps to prevent damage during transit.
- Proper labeling ensures easy identification and traceability.
Looking for reliable ASTM A312 TP304/304L stainless steel pipes? Contact Riyaarth Overseas today for high-quality, corrosion-resistant piping solutions tailored to your industry needs!
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Industry We Serve
- Oil & Gas industries
- Chemical process industries
- Pump and valve in high pressure component
- Food industries
- Pulp and paper industry
- Aerospace industry
- Power plant
- Mechanical component
- Sugar industry
- Cement industry