Products Description
3.5 inch 309 stainless pipe
Our 3.5 inch pipe uses high-grade 309 stainless steel for its construction. This material gives it strong resistance to oxidation. It handles extreme heat up to 980 degrees Celsius, or 1800 degrees Fahrenheit, without any issues. People often choose it for furnace components, heat exchangers, and exhaust setups. Those applications face heavy heat along with corrosive materials all the time. Compared to regular stainless steel, this one has more chromium and nickel inside. That setup provides better protection against pitting, crevice corrosion, and stress cracking. In the end, it holds up longer in tough conditions.
|
Parameter Category |
Details |
|---|---|
|
Product Name |
3.5 inch 309 Stainless Pipe |
|
Outer Diameter (OD) |
88.9 mm (3.5 inch) |
|
Wall Thickness (WT) |
1.2 mm - 10.0 mm (Customizable) |
|
Length |
6m, 12m, or Customized Length |
|
Pipe Type |
Seamless Pipe, Welded Pipe (ERW/TIG) |
|
Surface Finish |
BA (Bright Annealed), AP (Annealed and Pickled), Polished (2B, 4K, 6K) |
|
Tensile Strength (σb) |
≥ 550 MPa |
|
Yield Strength (σ0.2) |
≥ 205 MPa |
|
Elongation (δ5) |
≥ 40% |
|
Hardness (HB) |
≤ 187 HB |
Our 309 stainless pipe also excels in formability and weldability-easily cut, bent, or welded with standard techniques for flexible, project-specific customization. Its smooth inner and outer surfaces lower fluid resistance, suiting oil, gas, chemical, and water treatment transport needs. Strict manufacturing guarantees consistent wall thickness and dimensional precision, minimizing leaks and ensuring reliable performance in critical systems.
|
Element |
Content (%) |
|---|---|
|
Carbon (C) |
≤ 0.20 |
|
Chromium (Cr) |
22.00 - 24.00 |
|
Nickel (Ni) |
12.00 - 15.00 |
|
Manganese (Mn) |
≤ 2.00 |
|
Silicon (Si) |
≤ 1.50 |
|
Phosphorus (P) |
≤ 0.045 |
|
Sulfur (S) |
≤ 0.030 |
|
Nitrogen (N) |
≤ 0.10 |
Company & Factory Scale
Jiangsu Cunrui Metal Products Co., Ltd.
With over 20 years of experience, Jiangsu Cunrui Metal Products Co., Ltd. is a leading supplier of stainless steel pipes and fittings. Our Jiangsu-based factory spans 2000㎡ with advanced equipment, supported by a 200+ professional team for efficient, high-quality production.
Our factory boasts distinct advantages: Large-scale material sourcing and optimized production bring cost benefits, allowing competitive pricing without quality compromise. We have a comprehensive testing system (UT, RT, hydraulic testing, chemical analysis) to ensure batch consistency. Holding global-recognized certificates (ISO9001, ASTM, JIS, DIN, CE), we also offer third-party transshipment via global port partners to help customers avoid high tariffs.
Why choose us?
We are committed to providing customers with products of consistent quality, and our quality control system has been highly recognized by customers worldwide. Whether it is a standard product or a customized order, we strictly follow the agreed standards and requirements to ensure customer satisfaction.
We warmly invite you to our Jiangsu factory. On-site visits let you inspect our production facilities and processes, deepening your trust in our quality and strength-our team will answer questions and provide details. We value after-sales service equally: post-delivery, we follow up proactively, and guarantee 24-hour responses to quality/operational issues, with solutions like replacement or technical support for a hassle-free experience.
Packaging & Logistics Services
To ensure intact delivery, we use professional, pipe-specific packaging: Small-diameter pipes get end caps, anti-rust wrapping, and wooden crate/steel frame packaging; large-diameter ones are secured to pallets with steel straps and anti-collision pads to avoid scratches. All packages have clear labels (product name, specs, quantity, batch, destination) for easy identification.
Logistics-wise, we partner with top firms like DHL, FedEx, Maersk, and COSCO, offering flexible sea, air, and land transport. We deliver to global ports/cities, with our team providing real-time shipment tracking and timely updates to ensure on-time delivery.
FAQ
Q1: Why choose us?
A: Our company, as an internationally experienced and professional supplier, has been engaged in steel business for more than 20
years. We can provide a variety of steel products with high quality to our clients.
Q2: Can you provide OEM/ODM service?
A: Yes. Please feel free to contact us for more details.
Q3: What is your Payment Term?
A:TT, 30% deposit in advance, and 70% balance before shipment.
Q4: Can we visit your factory?
A: Warmly welcome. Once we have your schedule, we will arrange the professional sales team to follow up your case.
Q5: Can you provide sample?
A: Yes. Sample is free for regular sizes, but the buyer needs to pay freight cost.
Contact us now and purchase your 3.5 inch 309 stainless pipe.
