ASTM A249 TP304L austenitic stainless steel welded pipe for pharmaceutical industry
ASTM A249 TP304L austenitic stainless steel welded pipe for pharmaceutical industry
ASTM A249 TP304L welded pipe is an ideal choice for the pharmaceutical industry due to its low-carbon, austenitic stainless steel composition, which provides excellent corrosion resistance, weldability, and chemical resistance. Manufactured to exacting standards, this pipe is typically bright annealed and cold-drawn for a clean, high-quality surface. It undergoes rigorous testing to ensure reliability and safety in sensitive applications such as pharmaceutical manufacturing and processing.
What is the ASTM standard for 304L stainless steel?
304 and 304L ASTM A240 stainless steel plate is a standard 18-8 material, meaning it contains 18% chromium and 8% nickel. 304 stainless steel plate is one of the most widely used stainless steel materials. It has excellent forming and welding characteristics.
ASTM A249 TP304L Austenitic Stainless Steel Welded Pipe (for the Pharmaceutical Industry)
ASTM A249 covers welded austenitic stainless steel pipe for high-temperature applications such as boilers, superheaters, heat exchangers, and condensers. TP304L, a low-carbon version of TP304, offers excellent corrosion resistance and enhanced weldability. Its composition and properties make it suitable for a wide range of industrial applications, particularly where oxidation resistance and high-temperature strength are critical.
Chemical Composition of TP304L Pipe
| Element | Percentage (%) |
|---|---|
| Carbon (C) | ≤ 0.03 |
| Chromium (Cr) | 18.0 – 20.0 |
| Nickel (Ni) | 8.0 – 12.0 |
| Manganese (Mn) | ≤ 2.0 |
| Silicon (Si) | ≤ 1.0 |
| Phosphorus (P) | ≤ 0.045 |
| Sulfur (S) | ≤ 0.03 |
| Iron (Fe) | Balance |
ASTM A249 TP304L austenitic stainless steel welded pipe Mechanical Properties
| Property | Value |
|---|---|
| Tensile Strength | ≥ 515 MPa (75 ksi) |
| Yield Strength (0.2%) | ≥ 205 MPa (30 ksi) |
| Elongation | ≥ 35% |
| Hardness (HRB) | ≤ 90 |
Manufacturing and Quality Assurance
Welding Process: Pipes are typically welded using a high-frequency induction welding process, requiring no filler material.
Post-Weld Treatment: After welding, the pipes undergo cold working and a final heat treatment (bright annealing) to relieve stress and achieve the desired properties.
Surface Treatment: Surface treatment is designed to remove any impurities and enhance corrosion resistance. Pickling or bright annealing is used to ensure the final surface is clean and free of scale.
Testing: The final product undergoes various tests, including mechanical testing and non-destructive testing, to ensure it meets specified standards and is suitable for its intended use.
Gnee Steel specializes in the production of a wide range of stainless steel products. Gnee Steel's product packaging includes: Steel Strapping: Pipes with an outer diameter of 3 inches or less are typically strapped together with polypropylene film to prevent rust during ocean shipping, and then secured with steel strapping. Wooden Cases/Crates: Pipes are typically packaged in wooden cases or crates to protect the pipes during transportation, especially those that are longer or have larger diameters. Seaworthy Export Packaging: Suppliers typically use standard seaworthy export packaging methods, which may include a variety of materials and techniques to protect the pipes during transportation. Tarpaulin Packaging: This prevents rain, seawater, and other external factors from penetrating the export crates during transportation. Gnee Steel specializes in the production and sale of alloy materials. Gnee Steel's products are widely used in the aerospace, chemical, power, automotive, and nuclear energy sectors, and we can provide customized alloy material solutions based on customer needs. For alloy material pricing or customized alloy material solutions, please contact us for a quote: ru@gneesteelgroup.com
