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 for high-temperature environments, the chromium-nickel austenitic stainless steel pipes such as 309, 309S, and 309H are renowned for their formidable resistance to oxidation, heat, and corrosion. This impressive resilience is credited to their substantial chromium and nickel composition. Furthermore, these stainless steel pipes exhibit exceptional strength at both ambient and elevated temperatures. The primary distinction between 309 and 309S stainless steel pipes lies in their carbon content. The 309S variant contains significantly less carbon, reducing carbide precipitation and thereby enhancing weldability. Conversely, the 309H variant boasts a higher carbon concentration than the 309 grade, making it exceedingly more resistant to creep.
Stainless Steel Welded TubesCrafted from stainless steel strips, our tubular products are roll-formed and fusion-welded along the longitudinal seam. Notably, Daxun's welding process is characterized by the absence of filler metal, ensuring superior purity and consistency in every weld.
309 Stainless Steel Tube Features
- Exhibits unparalleled corrosion resistance
- Offers superior resistance to marine atmospheres compared to Alloy 304
- Optimized for high-temperature applications, leveraging exceptional oxidation resistance
- Demonstrates high resistance to sulfite liquors
- Recognized as heat-resistant alloys
- Destructive scaling temperature is approximately 2000°FoF
- Exemplary scaling resistance under both continuous and intermittent service conditions
Stainless Steel Drawn TubeOur tubular products undergo rolling and subsequent re-drawing to achieve final sizing. This rolling and drawing methodology is perfect for producing thick-walled, large-diameter tubes that cannot be rolled directly to size, yet offer significant cost advantages over seamless tubes. Additionally, all drawn tubes receive bright annealing for an immaculate finish.
Daxun Advantages
- Comprehensive Range: We provide an extensive selection of stainless steel pipes, ranging from small to large diameters, encompassing grades such as 304L, 316L, 317L, 321, 309, 347, 2205, and more.
- Unparalleled Flexibility: Whether you require seamless or welded steel pipes, our offerings are meticulously designed to cater to your specific project requirements.
Quality - Adherence to Standards: Our stainless steel pipes are manufactured in strict compliance with rigorous standards, including ISO9001, ABS, NSF/ANSI Standard 61, and NACE MR0175, guaranteeing reliability and exceptional performance.
- Custom Orders: Searching for specialized stainless steel pipe sizes? We provide a diverse array of custom options at competitive prices, with the added convenience of online ordering.
Stainless Steel Seamless TubeManufactured by drawing from the hollow section of the tube through piercing or hot extrusion processes, our seamless stainless steel tubes are ideal for applications demanding large diameter-to-wall thickness ratios and offer superior external dimensional tolerances.
Quality, Delivery, Inspection
- Daxun conducts a series of rigorous quality assurance tests, including flattening, pitting and resistance, mechanical, hardness, material positive identification, and expansion tests. These evaluations ensure the material's suitability for its intended application.
- Throughout the production process, we meticulously measure the diameter, thickness, and surface quality of each product. Our standard delivery periods range from 7 to 15 days, extendable to 20 days for special size requirements.
Delivery timelines are strictly adhered to as per contractual agreements. - We welcome customer-designated third-party agencies to our factory for inspection.
- We offer free samples to customers for testing purposes.
- We support on-site or video-based factory inspections.
Daxun Stainless Steel Pipe Manufacturing Capabilities
Our forming capabilities are unparalleled, featuring cutting-edge extrusion and cold working assets tailored for the manufacture of tube and pipe products. We boast one of the world's largest pilger mills, complemented by our unique hydroforming processes for creating precision fittings.
Unmatched Pipe Processing Capabilities at Daxun
As a vertically integrated manufacturer, Jiangsu Daxun Alloy Co., Ltd. is your ultimate one-stop shop. We handle projects of any scale, offering services from complete project management to specialized machining jobs. Our extensive services include Straightening, Drilling, Honing, Trepanning, Cutting, Testing, Boring, Machining, Laser Welding, Polishing, Turning, and a myriad of Specialized Services.
Expansive and Superior Pipe Solutions
Equipped with vertical and horizontal presses ranging from 12,000 to 35,000 tons, Jiangsu Daxun Alloy Co., Ltd. stands at the forefront of pipe extrusion capabilities globally. Our advanced facilities enable us to produce the industry's longest and largest diameter pipes, setting new standards for excellence.
Jiangsu Daxun Alloy Co., Ltd. is a trusted supplier to the power generation sector, providing high-quality ductwork, boiler tubes, main steam tubes, thermal reheat tubes, and flue gas desulfurization units. Our products support nuclear, coal-fired, renewable energy, and combined cycle applications, ensuring efficiency and reliability in every project.
Chemical Composition of 309 Stainless Steel Pipe: Discover the precise chemical composition of our 309 stainless steel pipes, expertly engineered for optimal performance. Each element is meticulously balanced to ensure maximum durability, corrosion resistance, and high-temperature stability.
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: Unlock the full potential of our 309 stainless steel pipes, featuring exceptional mechanical properties that provide unparalleled strength, flexibility, and resilience in extreme conditions. Explore the engineering marvels behind their superior tensile strength and elongation.
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: Our 309 stainless steel welded pipes, compliant with ASTM A312 standards and boasting a pristine pickling surface, are designed to withstand high heat environments. Ideal for a wide range of industrial applications, they are your go-to solution for challenging conditions. Physical Properties: Delve into the remarkable physical properties of our 309 stainless steel pipes. From thermal conductivity to density, every aspect is optimized to deliver peak performance, ensuring that our products remain at the forefront of industry standards.
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.