309S Stainless Steel Pipe 4-200mm OD High Temperature Resistant Austenitic Seamless Tube
309 and 309S are austenitic chromium-nickel stainless steels specifically engineered for high-temperature applications. These alloys deliver exceptional corrosion resistance, superior oxidation resistance, and excellent heat resistance while maintaining good strength at both room and elevated temperatures. The key distinction between 309 and 309S is carbon content, with 309S featuring reduced carbon levels to minimize carbide precipitation and enhance weldability.
| Product Name | 309/309S Stainless Steel Pipe |
| Type | Steel Pipe |
| Outer Diameter |
Round Tube: 4mm-200mm Square Tube: 10×10mm-100×100mm Rectangular Tube: 10×20mm-50×100mm |
| Wall Thickness | 0.6mm-6.0mm |
| Length | 1-6 meters, customizable lengths available |
| Standards | ASTM, AISI, JIS, GB, DIN, EN, etc. |
| Surface Finishes | Black, Bright Polished, Rough Turning, Matt Surface Treatment, No. 4, BA |
| Certifications | ISO, SGS, BV, etc. |
| Production Technology | Hot Rolling, Cold Rolling |
| Edge Processing | Edging, Trimming |
- Food processing equipment
- Textile manufacturing operations
- Breweries and beverage production
- Water treatment plants
- Oil and gas processing facilities
- Fertilizer and pesticide manufacturing
- Chemical processing applications
- Construction and architectural uses
- Pharmaceutical equipment
- Automotive components
| Element | Content (%) |
|---|---|
| C (Carbon) | ≤0.08 |
| Si (Silicon) | ≤0.75 |
| Mn (Manganese) | ≤2.0 |
| Cr (Chromium) | 22.0-24.0 |
| Ni (Nickel) | 12.0-15.0 |
| S (Sulfur) | ≤0.03 |
| P (Phosphorus) | ≤0.045 |
| Tensile Strength (σb) | ≥515 MPa |
| Yield Strength (σ0.2) | ≥205 MPa |
| Elongation (δ5) | ≥35% |
| Hardness | ≤217 HB |
Yes, we welcome sample orders for quality testing and verification. Mixed samples are acceptable.
Samples require 3-5 days, while production time for orders exceeding 28 tons takes 7-15 days.
We offer low MOQ options, with 1 piece available for sample verification.
For samples, we typically ship via DHL, UPS, FedEx, or TNT, with delivery in 3-5 days. Airline and sea shipping are also available. For bulk orders, ship freight is the preferred method.
Yes, we provide OEM and ODM services for custom branding.
Yes, we offer 5-10 year warranties for our products.
Our products are manufactured under strict quality control systems, maintaining a defective rate below 0.2%.
Get in Touch
Have questions about our products or want to discuss a custom order? Our team is ready to help you.