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 |
Commonly utilized in demanding high-temperature environments, our chromium-nickel austenitic stainless steel pipes 309, 309S, and 309H are engineered for exceptional resistance to oxidation, heat, and corrosion, thanks to their elevated chromium and nickel composition. These robust stainless steel pipes maintain outstanding strength in both ambient and extreme temperatures. The primary distinction between 309 and 309S is their carbon content: 309S has a lower carbon concentration, minimizing carbide precipitation and enhancing weldability. Conversely, 309H's carbon content is higher than that of 309, providing superior creep resistance.
Stainless Steel Welded TubesCrafted from premium stainless steel strips, our tubular products undergo roll-forming and fusion-welding along their longitudinal seams. Daxun's state-of-the-art welding process ensures precision and quality without the use of any filler metals.
309 Stainless Steel Tube Features
- Provides unparalleled corrosion resistance
- Exceeds Alloy 304 in marine atmosphere resilience
- Optimized for high-temperature applications due to excellent oxidation resistance
- Boasts high resistance to sulfite liquor environments
- Widely acknowledged as heat-resistant alloys
- Destructive scaling temperature reaches approximately 2000°FoF
- Exhibits superior scaling resistance for both continuous and intermittent service
Stainless Steel Drawn TubeOur stainless steel tubular products are meticulously rolled before being re-drawn to their final dimensions. This process is particularly advantageous for manufacturing thick-walled, large-diameter tubes, offering significant cost savings compared to seamless tubes. Every drawn tube undergoes bright annealing for optimal quality.
Daxun Advantages
- Variety: From small to large diameters, our extensive range of stainless steel pipes includes diverse grades such as 304L, 316L, 317L, 321, 309, 347, and 2205, catering to all your requirements.
- Flexibility: Whether you prefer seamless or welded options, our stainless steel pipes are available in lengths tailored to meet your specific project needs.
Quality - Standards: Our stainless steel pipes conform to rigorous standards, including ISO9001, ABS, NSF/ANSI Standard 61, and NACE MR0175, ensuring unmatched reliability and performance.
- Custom Orders: Need specialized sizes? We offer a wide array of custom options for stainless steel pipes at competitive prices, with the convenience of online ordering.
Stainless Steel Seamless TubeOur seamless stainless steel tubular products are drawn from the hollow section of the tube, created through piercing or hot extrusion. Ideal for applications demanding large diameter-to-wall thickness ratios, these tubes deliver exceptional external dimensional accuracy.
Quality, Delivery, Inspection
- Daxun ensures superior material suitability through comprehensive quality assurance tests, including flattening, pitting, resistance, mechanical, hardness, material positive identification, and expansion tests.
- Throughout production, we meticulously measure diameter, thickness, and surface quality. Our standard delivery timeline is 7-15 days, extending to 20 days for custom sizes, fully adhering to contract specifications.
Our delivery timelines are strictly upheld as per contractual agreements. - We support third-party agency inspections at our factory.
- We provide free samples for customer testing.
- We accommodate on-site or video factory inspections.
Daxun Stainless Steel Pipe Manufacturing Capabilities
Our advanced forming capabilities boast cutting-edge extrusion and cold working assets for producing superior tube and pipe products. Featuring one of the largest pilger mills globally and an innovative hydroforming process, we create impeccable fittings designed to meet the highest standards.
Unmatched Pipe Processing Mastery at Daxun
As a vertically integrated manufacturer, Jiangsu Daxun Alloy Co., Ltd. is your ultimate one-stop-shop. From comprehensive project management to specific machining tasks, we excel in straightening, drilling, honing, trepanning, cutting, testing, boring, machining, laser welding, polishing, turning, and specialized services, ensuring exceptional quality and precision.
Superior Solutions for Bigger, Better Pipes
Equipped with vertical and horizontal presses ranging from 12,000 to 35,000 tons, Daxun offers unparalleled pipe extrusion capabilities. We produce the industry's longest lengths and largest diameter pipes, setting new standards in pipe manufacturing.
Serving the power generation market, Jiangsu Daxun Alloy Co., Ltd. delivers top-tier ductwork, boiler tubes, main steam tubes, thermal reheat tubes, flue gas desulfurization units, and more. Our products cater to nuclear, coal-fired, renewable energy, and combined cycle applications, ensuring reliability and performance.
Chemical Composition of 309 Stainless Steel Pipe: The 309 stainless steel pipe from Jiangsu Daxun Alloy Co., Ltd. features a meticulously balanced chemical composition, ensuring superior performance and reliability for your applications. This alloy is designed to withstand high temperatures and corrosive environments, making it ideal for diverse industrial uses.
| 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: At Jiangsu Daxun Alloy Co., Ltd., our 309 stainless steel pipe exhibits remarkable mechanical properties, including exceptional tensile strength, durability, and resistance to thermal fatigue. These attributes guarantee long-lasting performance and reliability under the most demanding conditions.
| 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: Jiangsu Daxun Alloy Co., Ltd.'s 309 stainless steel pipe stands out for its bright surface finish and high heat resistance. With an outer diameter range from 6.35mm to 508mm, this pipe is an excellent choice for applications requiring durability and precision. Physical Properties: The 309 stainless steel pipe from Jiangsu Daxun Alloy Co., Ltd. boasts outstanding physical properties. Engineered to retain its integrity under extreme conditions, this pipe offers excellent thermal conductivity, density, and expansion properties, making it a versatile solution for high-performance applications.
| 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.
