Available in a variety of grades including 304, 304L, 316, and 316L, our seamless pipes meet international standards such as ASTM A312, EN 10216-5, and JIS G3459, ensuring performance and reliability in aggressive environments.
SUNNING STEEL's 300 Series Stainless Steel Seamless Pipes are high-performance piping solutions designed for critical applications that demand excellent corrosion resistance, high strength, and outstanding formability. Manufactured through precision cold or hot drawing processes, these pipes offer superior structural integrity, smooth internal finishes, and uniform wall thickness — ideal for industries ranging from petrochemicals to food processing.
| Item | Specification |
| Grades Available | 304, 304L, 316, 316L |
| Outside Diameter | 6 mm – 610 mm |
| Wall Thickness | 0.5 mm – 30 mm |
| Length | 6 meters (standard), or custom lengths |
| Standards | ASTM A312 / A213 / A269, EN 10216-5, JIS G3459 |
| Finish | Annealed & Pickled, Bright Annealed, Polished |
| End Types | Plain, Beveled, or Threaded Ends |
| Scope of Application | ✔ Oil & Gas ✔ Chemical & Petrochemical ✔ Food & Beverage ✔ Pharmaceutical ✔ Water Treatment ✔ Power Plants |
Chemical Composition (Typical Values)
| Grade | C (%) | Mn (%) | Si (%) | P (%) | S (%) | Cr (%) | Ni (%) | Mo (%) |
| 304 | ≤0.08 | ≤2.00 | ≤0.75 | ≤0.045 | ≤0.03 | 18.0–20.0 | 8.0–10.5 | – |
| 304L | ≤0.035 | ≤2.00 | ≤0.75 | ≤0.045 | ≤0.03 | 18.0–20.0 | 8.0–12.0 | – |
| 316 | ≤0.08 | ≤2.00 | ≤0.75 | ≤0.045 | ≤0.03 | 16.0–18.0 | 10.0–14.0 | 2.0–3.0 |
| 316L | ≤0.035 | ≤2.00 | ≤0.75 | ≤0.045 | ≤0.03 | 16.0–18.0 | 10.0–14.0 | 2.0–3.0 |
| Property | Value |
| Density | 7.93 g/cm³ |
| Melting Range | 1400 – 1450°C |
| Thermal Conductivity | 16.2 W/m·K (at 100°C) |
| Electrical Resistivity | 0.72 μΩ·m (at 20°C) |
| Modulus of Elasticity | ~193 GPa |
| Magnetism | Non-magnetic in annealed state |
Yes. Seamless stainless steel pipes are ideal for high-pressure and high-temperature systems due to their excellent mechanical strength and uniformity.
Absolutely. SUNNING STEEL offers cut-to-length services and surface finishes like polished, bright annealed, or pickled to suit your exact specifications.
Standard sizes are often in stock and can be shipped within 7–10 days. Custom orders may require additional processing time.
Yes, all SUNNING STEEL pipes are manufactured to meet ASTM, EN, and JIS standards, complete with full traceability and certification.
For inquiries or a detailed quotation, please contact SUNNING STEEL LIMITED at:
Email: [email protected]
Web: www.sunningsteel.com
Call: +8613673622930
Let SUNNING STEEL be your trusted partner in stainless steel excellence.
If you have any needs or questions, please leave a message, we will reply to you within 24 hours!
Email: [email protected]
Phone/WeChat/Whatsappt: 8613673622930
Skype: rebecca_jianhui
Fax/Tel: +8613673622930
