309 and 309S are austenitic chromium-nickel stainless steels typically used in higher temperature applications. Due to their high chromium and nickel content, 309 and 309S alloys have a high degree of corrosion resistance, excellent oxidation resistance and excellent heat resistance, while providing good strength at room and high temperatures. The only significant difference between 309 and 309S is the carbon content. 309S alloy has less carbon, which minimizes carbide precipitation and improves 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, Length can be customized |
| Standard | ASTM, AISI, JIS, GB, DIN, EN, etc. |
| Surface | Black, Bright Polished, Rough Turning, Matt Surface Treatment, No. 4. BA, etc. |
| Scope of Application | Common applications for stainless steel pipes include food processing,
Textile operations, Breweries, Water treatment plants, Oil and gas processing,
Fertilizers and pesticides, Chemical applications, Construction, Pharmaceuticals, Auto parts, etc. |
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| Certificate | ISO, SGS, BV, etc. |
| Production Technology | Hot Rolling, Cold Rolling |
| Edge Processing | Edging, Trimming |
| Chemical composition |
| C | Si | Mn | Cr | Ni | S | P |
| ≤0.08 | ≤0.75 | ≤2.0 | 22.0～24.0 | 12.0～15.0 | ≤0.03 | ≤0.045 |
| Chemical composition |
| C | Si | Mn | Cr | Ni | S | P |
| ≤0.08 | ≤0.75 | ≤2.0 | 22.0～24.0 | 12.0～15.0 | ≤0.03 | ≤0.045 |
| Mechanical properties |
| σb (MPa) | σ0.2 (MPa) | δ5 (％) | hardness |
| ≥515 |
≥205 |
≥35 |
≤217HB |
Q1.Can I have a sample order for stainless steel products?
A:Yes, we welcome sample order to test and check quality. Mixed samples are acceptable.
Q2.What about the lead time?
A:Sample takes 3-5 days, production time takes 7-15days for order quantity more than 28tons.
Q3.Do you have any MOQ limit for stainless steel products order?
A:Low MOQ, 1pc for sample checking
Q4.How do you ship and how long does it take to arrive?
A:For samples, we usually ship by DHL, UPS, FedEx or TNT, It usually takes 3-5 days to arrive. Airline and sea shipping are also optional. For mass products, ship freight is preferred.
Q5.Is it OK to print my logo on the product?
A:Yes.OEM and ODM can be provided for us.
Q6:Do you provide guarantee for the product?
A:Yes, we provide 5-10 years warranty for our products.
Q7:How to deal with the failure?
A: First of all, our products are produced under a strict quality control system, and the defective rate will be reduced by 0.2%.
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High temperature resistance 309S Stainless Steel Pipe Austenitic Seamless Tube Stainless Steel Pipe Welded stainless steel pipe Images
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