Basic Info.
Model NO.
309 Stainless Steel Tube
Type
Stainless Steel Pipes
Standard
ASTM, AISI, GB, JIS, EN
Certification
ISO, RoHS, IBR, AISI, ASTM, GB, EN, DIN, JIS
Surface Treatment
Pickling
Surface
Pickling, Polishing, Ba
Delivery State
Solution Annealing
Transport Package
Wooden Box + Strapping
Specification
OD 6.35mm-OD 1219mm
Product Description
Stainless Steel 309 Specification | Stainless Steel 309 / 309S, ASTM A312 Stainless Steel |
SS UNS S30908 Pipe | 309s Stainless Steel Pipe |
ASTM A312 TP 309 - 309S SS Seamless Pipe Size | 4 to 510mm W. T.: 0.5 to 50mm |
WERKSTOFF Welded Pipe Size | 5.0 mm - 1219.2 mm |
ASTM A312 TP 309 - 309S Stainless Steel EFW Pipe size | 5.0 mm - 1219.2 mm |
Stainless Steel WERKSTOFF Pipe Swg & Bwg | 10 Swg., 12 Swg., 14 Swg., 16 Swg., 18 Swg., 20 Swg. |
309 - 309S Stainless Steel Pipe Schedule | SCH5, SCH10, SCH10S, SCH20, SCH30, SCH40, SCH40S, STD, SCH80, XS, SCH60, SCH80, SCH120, SCH140, SCH160, XXS |
SS UNS S30908 Swg & Bwg | 10 Swg., 12 Swg., 14 Swg., 16 Swg., 18 Swg., 20 Swg. |
309s Stainless Steel Tube wall thickness | 0.020″ -0.220″, (special wall thicknesses available) |
TP309 SS Length | Single Random, Double Random, Standard & Cut length Pipe & Tube |
ASTM A 358 SS 309 - 309S Finish | Polished, AP (Annealed & Pickled), BA (Bright & Annealed), MF |
ASTM A 312 SS 309 - 309S Form | Round, Hydraulic, 'U' bent or Hollow,LSAW, Boiler, Straight Pipe, Clad Pipe, Rectangular, Square Pipe Etc |
Stainless Steel 309 / 309S Type | Welded, Seamless, ERW, EFW, Fabricated Pipe, 'U' bent or Hollow, Hydraulic, LSAW, Boiler, Straight Tube, Tube Coil, Round, Rectangular, Square Tube etc |
TP309 SS End | Plain End, Beveled End, Treaded Pipe |
ASTM A312 TP 309 - 309S SS Marking | All 309s Stainless Steel Pipe are marked as follows: Standard, Grade, OD, Thickness, Length, Heat No. (Or according to the customer's request.) |
SS TP309 - 309S Application | Oil Pipe & Tube, Gas Pipe & Tube, Fluid Pipe & Tube, Boiler Pipe & Tube, Heat exchanger Tube |
ASTM A312 Stainless Steel Value Added Service | Draw & Expansion as per required Size & Length, Polish (Electro & Commercial) Annealed & Pickled Bending, Machining Etc. |
Marking | All 309s Stainless Steel tubes are marked as follows: Standard, Grade, OD, Thickness, Length, Heat No. (Or according to the customer's request.) |
309s stainless steel tubing Testing & Inspection | Visual inspection • Surface roughness measurement • Helium-leak testing • Scanning Electron Microscopy (SEM) • Auger Electron Microscopy (AES) • Election Spectroscopy for Chemical Analysis (ESCA or XPS) • Particle testing • Moisture testing |
SS 309 Specialize in | Alloy 309 / 309S Large Diameter Pipe |
Stainless Steel 309 Capillary Tube |
Stainless Steel 309S Heat Exchanger & |
309 SS Condenser Tube |
Stainless Steel 309S Test Certificate | Manufacturer Test Certificate |
Laboratory Test Certificate from Govt. Approved Lab. |
Under Third Party Inspection |
Manufacturers of 309 / 309S Stainless Steel Pipe | TISCO stainless steel pipes |
Baosteel stainless steel pipes |
Qingshan stainless steel pipes |
ATI stainless steel, USA |
Tubacex Tubos Inoxidables S.A., Spain |
Schoeller Bleckmann, Austria |
Seah Steel Corporation, South Korea |
In high-temperature environments, the preferred choice is often the chromium-nickel austenitic stainless steel pipes 309, 309S, and 309H. These particular grades are specifically engineered to provide superior resistance to oxidation, heat, and corrosion, thanks to their elevated chromium and nickel content. Additionally, these stainless steel pipes boast impressive strength across both room and elevated temperatures. The key difference between 309 and 309S stainless steel lies in their carbon content, with 309S having a significantly lower carbon concentration, thereby reducing carbide precipitation and enhancing weldability. The 309H variant also varies in carbon content from the 309 plate, featuring a higher carbon concentration that offers increased resistance to creep.
Stainless Steel Welded TubesAt Daxun, our stainless steel tubular products are crafted from premium stainless steel strips, expertly roll-formed and fusion-welded along the longitudinal seam. Notably, our advanced welding process is performed without the use of any filler metal.
Key Features of 309 Stainless Steel Tubes
- Superior corrosion resistance for extended durability
- Enhanced resistance to marine atmospheres compared to Alloy 304
- Perfect for high-temperature applications due to exceptional oxidation resistance
- High resistance to sulfite liquors, adding to their versatility
- Widely acknowledged as heat-resistant alloys
- Destructive scaling temperature reaches approximately 2000oF
- Outstanding scaling resistance for both continuous and intermittent service
Stainless Steel Drawn TubeOur stainless steel tubular products undergo rolling and re-drawing to achieve their final size. This technique is especially advantageous for producing thick-walled, large-diameter tubes that can't be rolled directly to size, while still offering significant cost savings over seamless tubes. All drawn tubes are bright annealed for a flawless finish.
Daxun's Competitive Advantages
- Extensive Range: We provide an extensive range of stainless steel pipes, from small to large diameters, in various grades such as 304L, 316L, 317L, 321, 309, 347, 2205, and more.
- Customizable Flexibility: Whether you require seamless or welded steel pipes, our offerings are tailored to meet your specific project needs.
Uncompromising Quality - Stringent Standards: Our stainless steel pipes conform to rigorous standards like ISO9001, ABS, NSF/ANSI Standard 61, and NACE MR0175, ensuring unparalleled reliability and performance.
- Tailored Custom Orders: Need special size stainless steel pipes? We offer a variety of customized options at competitive prices with convenient online ordering.
Stainless Steel Seamless TubeOur stainless steel tubular products are meticulously drawn from the hollow sections of tubes created through piercing or hot extrusion processes. Ideal for products requiring very large diameter to wall thickness ratios, these seamless tubes offer excellent external dimensional tolerances.
Commitment to Quality, Timely Delivery, and Rigorous Inspection
- Daxun performs a comprehensive range of quality assurance tests, including flattening, pitting and resistance, mechanical, hardness tests, material positive identification, and expansion tests, among others. These tests ensure that our products meet the highest standards for their intended applications.
- Throughout production, we meticulously measure product diameter, thickness, and surface quality. Our standard delivery time ranges from 7 to 15 days. For special size products, the delivery period may extend to 20 days.
We strictly adhere to our contracted delivery times. - We welcome third-party inspections at our factory.
- Customers can request free samples for testing.
- We support both on-site and video factory inspections.
Daxun's Stainless Steel Pipe Manufacturing Expertise
Our forming capabilities are second to none, featuring state-of-the-art extrusion and cold-working assets for crafting premium tube and pipe products. We boast one of the world's largest pilger mills, complemented by a unique hydroforming process that allows us to manufacture top-tier fittings with unmatched precision.
Discover Daxun's unmatched pipe processing capabilities.
As a vertically integrated manufacturer, Jiangsu Daxun Alloy Co., Ltd. offers a comprehensive one-stop shop solution. We handle everything from full-scale projects to specific machining jobs, including Straightening, Drilling, Honing, Trepanning, Cutting, Testing, Boring, Machining, Laser Welding, Polishing, Turning, and other Specialized Services.
Unveiling Bigger, Better Pipe Solutions.
Equipped with both vertical and horizontal presses ranging from 12,000 tons to 35,000 tons, Daxun showcases the world's most comprehensive pipe extrusion capabilities. Our advanced setup empowers us to manufacture the industry's longest lengths and largest diameter pipes, setting new benchmarks.
Jiangsu Daxun Alloy Co., Ltd. is a cornerstone supplier to the power generation market. We provide ductwork, boiler tubes, main steam tubes, thermal reheat tubes, flue gas desulfurization units, and an array of other products tailored for nuclear, coal-fired, renewable energy, and combined cycle applications.
Chemical Composition of 309 Stainless Steel Pipe
Element | % Present (in product form) |
| C, H, P, L | TW2) |
Carbon (C) | 0.2 | 0.2 |
Silicon (Si) | 1.50 - 2.00 | 1.50 - 2.50 |
Manganese (Mn) | 2 | 2 |
Phosphorous (P) | 0.045 | 0.045 |
Sulfur (S) | 0.015 | 0.03 |
Chromium (Cr) | 19.00 - 21.00 | 19.00 - 21.00 |
Nickel (Ni) | 11.00 - 13.00 | 11.00 - 13.00 |
Nitrogen (N) | 0.11 | - |
Iron (Fe) | Balance | Balance |
Mechanical Properties of 309 Stainless Steel Pipe
Product Form | | | |
| C, H, P | L | TW* |
Thickness a or diamter d (mm) | a ≤ 12 | d ≤ 25 | a=25 |
Hardness HB max. 1) 2) 3) | 216 | - |
Proof Strength3) | Rp0.2 N/mm2 | 190 | 230 |
Rp1.0 N/mm2 | 230 | 270 |
Tensile Strength | Rm N/mm2 | 500 - 720 | min. 550 |
Elongation min. in % | Long Products | 401) | - |
Flat Products | 0.5 ≤ a/d 3 | 404)5) | 304)5)6) |
3 ≤ a/d | 404)5) | 304)5)6) |
309 Stainless Steel Pipe Physical Properties
Density (lb./ in^2) @ RT | | 0.29 |
Modulus of Elasticity in Tension (psi x 10^6) | | 29 |
Specific Heat (BTU/o F/lb.) | 32 to 212 oF | 0.12 |
Thermal Conductivity (BTU/hr/ft^2/ft) | 212oF | 9 |
| 932oF | 10.8 |
Mean Coefficient of Thermal Expansion (in. x 10^-6 per o F) | 32 to 212oF | 8.3 |
| 32 to 600oF | 9.3 |
| 32 to 1,000oF | 9.6 |
| 32 to 1,200oF | 10 |
Electrical Resistivity (micro ohms - cm) | at 70oF | 39.8 |
Melting Point Range (oF) | | 2550 - 2650 |
Oxidation Resistance - Continuous Service(oF) | | 2000 |
Oxidation Resistance - Intermittent Service(oF) | | 1800 |
Address:
B108, No. 32-1, Chengnan Road, Xinwu District, Wuxi, Jiangsu, China
Business Type:
Manufacturer/Factory, Trading Company
Business Range:
Metallurgy, Mineral & Energy
Management System Certification:
ISO 9001, ISO 9000, ISO 14001, ISO 14000, ISO 20000, OHSAS/ OHSMS 18001, IATF16949, HSE, ISO 14064, QC 080000, GMP, BSCI, BRC, SA 8000, QHSE, HACCP, ISO 13485, EICC, ANSI/ESD, SEDEX, ISO 22000, AIB, WRAP, GAP, ASME, ISO 29001, HQE, IFS
Company Introduction:
Founded in 2003, Daxun Alloy is a leading global metal material manufacturer. Headquartered in Wuxi, China, the company has multiple production bases and sales offices around the world. Daxun Alloy focuses on the development, production and sales of various stainless steels, titanium alloys, high-temperature alloys, etc. For general industry, construction, aerospace, energy, chemical industry, medical and other fields.
China, Daxun Metal Group is a global vertically integrated metal material manufacturer and stockist. Daxun can provide finished products and customized full-process services and professional technical services. Currently, the group has 600 employees and covers a total area of 130, 000 square meters. Daxun has a standing inventory of 50, 000 tons of stainless steel, 5, 000 tons of nickel-based alloys, and 2, 000 tons of pure titanium and titanium alloys. The main product forms are metal plates, metal coils, metal pipes, and metal bars. The metal materials produced by Daxun are market leaders for marine, energy, military, general industrial and aerospace applications. In addition, the company also produces seamless pipes, plates, forgings and other metal materials for power generation and oil and gas applications; Commercial and military alloy products; And metal alloys and other metal products for the forging industry.