AUSTENITIC STAINLESS STEEL SEAMLESS PIPE
Founded in 2013, Yantai Xinbaoshang Materials Technology Co., Ltd.
China's leading austenitic stainless steel seamless pipe manufacturer and supplier
Austenitic stainless steel seamless pipes maintain a stable austenitic structure at room temperature, primarily composed of 18% chromium (Cr), over 8% nickel (Ni), and approximately 0.1% carbon (C). This alloy combination delivers high corrosion resistance, excellent cold workability, toughness, plasticity, weldability, and non-magnetic properties. Despite superior toughness and plasticity, its strength is relatively low and cannot be enhanced through phase transformation, relying primarily on cold working to increase strength. Adding elements such as sulfur (S), calcium (Ca), selenium (Se), and tellurium (Te) significantly improves machinability. As a cornerstone of modern engineering and industrial applications, austenitic stainless steel seamless tubes demonstrate their critical and irreplaceable role across sectors like oil and gas, chemical processing, and construction. Their exceptional corrosion resistance and versatility make them widely used in heat exchangers, non-magnetic condensers, evaporators, and fluid conveyance systems.
Compared to conventional austenitic stainless steel seamless pipes, super austenitic stainless steel seamless pipes offer superior cleanliness, uniformity, and mechanical properties, featuring finer microstructures and superior surface quality. These advantages enable them to deliver exceptional performance in resisting localized corrosion in harsh media and in process manufacturing, making them particularly suitable for industrial applications with more severe operating conditions and stronger corrosive environments—demands that conventional austenitic stainless steel seamless pipes struggle to meet. Specifically, super austenitic stainless steel seamless pipes are extensively used in petrochemical environments handling media such as acetic acid, formic acid, terephthalic acid, and polyvinyl chloride (PVC). They are also employed in inorganic chemical processes involving sulfuric acid, ferrous sulfate, soda ash, and phosphoric acid, as well as in crude oil refining for desalting and vacuum distillation. Additionally, it demonstrates outstanding performance in supercritical boiler components like superheaters, reheaters, and final reheaters. Consequently, super austenitic stainless steel seamless pipes emerge as the ideal solution for demanding operational conditions.
This table provides detailed specifications for austenitic stainless steel seamless pipe, including size ranges, material, lengths, and standards to meet diverse application requirements.
| Outer Diameter Range | 6m – 1016m |
| Wall Thickness Range | 1mm – 65mm |
| Maximum Length | 18000mm |
| Material | 304(06Cr19Ni10), 304L(022Cr19Ni10), 304N(06Cr19Ni10N), 321(06Cr18Ni11Ti), 321H(07Cr19Ni11Ti), 316(06Cr17Ni12Mo2), 316L(022Cr17Ni12Mo2), 316LN(022Cr17Ni12Mo2N), 316Ti(06Cn7Ni12Mo2Ti), 317L(022Cr1Ni13Mo3), 347(06Cr18Ni11Nb), 347H(07Cr18Ni11Nb), 347HFG, 310S(06Cr25Ni20), S30815 |
| Executive standard | GB/T14975-2012, GB/T14976-2012, GB/T13296-2013, GB 5310-2017, GB 9948-2013, GB/T12771-2008, ASTM SA312, ASTM SA213, ASTM SA269, JIS G3463-20062012, JIS G3459-2012, GOST 9941-81, DIN 2462.1-1981, DIN 17456-8599, DIN17458-85 |
This table provides detailed specifications for super austenitic stainless steel seamless pipe, including size ranges, material, lengths, and standards to meet diverse application requirements.
| Outer Diameter Range | 6m – 1016m |
| Wall Thickness Range | 1mm – 65mm |
| Maximum Length | 18000mm |
| Material | N08904(904L), N08367, S30432, S31042 |
| Executive standard | ASTM SA312, ASTM SA213, ASTM SA269, ASTM B673, ASTM B674, ASTM B677, ASTM B675, ASTM B676, ASTM B690 |
1.Crystal Structure: Austenitic stainless steel possesses an austenitic crystal structure, which is face-centered cubic.
2.Primary Composition: A stable austenitic structure typically consists of approximately 18% chromium, 8% to 10% nickel, and about 0.1% carbon.
3.Properties: Austenitic stainless steel is non-magnetic, exhibits high toughness and ductility, and possesses strong corrosion resistance.
4.Weldability: Austenitic stainless steel is renowned for its excellent weldability.
5.Strengthening: Austenitic stainless steel can only be strengthened through cold working.
Schematic Diagram of Common Austenitic Stainless Steel Grades
| ASTM A213 | Grade | Chemical composition (mass fraction)/% | |||||||||||
| Uniform digital code | C | si | Mn | P | S | Ni | Cr | Mo | Cu | N | other | ||
| 1 | S30210 | 12Cr18Ni9 | 0.15 | 1.00 | 2.00 | 0.045 | 0.030 | 8.00-10.00 | 17.00-19.00 | 0.1 | |||
| 2 | S30408 | 06CR9Ni10 | 0.08 | 1.00 | 2.00 | 0.045 | 0.030 | 8.00-11.00 | 18.00-20.00 | ||||
| 3 | S30403 | 022Cr19Ni10 | 0.035 | 1.00 | 2.00 | 0.045 | 0.030 | 8.00-12.00 | 18.00-20.00 | ||||
| 4 | S30458 | 06Cr19Ni10N | 0.08 | 1.00 | 2.00 | 0.045 | 0.030 | 8.00-11.00 | 18.00-20.00 | 0.10-0.16 | |||
| 5 | S30478 | 06Cr19Ni9NbN | 0.08 | 1.00 | 2.00 | 0.045 | 0.030 | 7.50-10.50 | 18.00-20.00 | 0.15-0.30 | Nb:0.15 | ||
| 6 | S30453 | 022Cr19Ni10N | 0.08 | 1.00 | 2.00 | 0.045 | 0.030 | 8.00-11.00 | 18.00-20.00 | 0.10-0.16 | |||
| 7 | S30908 | 06Cr23Ni13 | 0.08 | 1.00 | 2.00 | 0.045 | 0.030 | 12.00-15.00 | 22.00-24.00 | ||||
| 8 | S31008 | 06Cr25Ni20 | 0.08 | 1.00 | 2.00 | 0.045 | 0.030 | 19.00-22.00 | 24.00-26.00 | ||||
| 9 | S31608 | 06Cr17Ni12Mo2 | 0.08 | 1.00 | 2.00 | 0.045 | 0.030 | 10.00-14.00 | 16.00-18.00 | 2.00-3.00 | |||
| 10 | S31603 | 022Cr17Ni12Mo2 | 0.035 | 1.00 | 2.00 | 0.045 | 0.030 | 10.00-14.00 | 16.00-18.00 | 2.00-3.00 | |||
| 11 | S31609 | 07Cr17Ni12Mo2 | 0.04-0.10 | 1.00 | 2.00 | 0.045 | 0.030 | 11.00-14.00 | 16.00-18.00 | 2.00-3.00 | |||
| 12 | S31668 | 06Cr17Ni2Mo2Ti | 0.08 | 0.75 | 2.00 | 0.045 | 0.030 | 10.00-14.00 | 16.00-18.00 | 2.00-3.00 | Ti5C-0.70 | ||
| 13 | S31658 | 06Cr17Ni12Mo2N | 0.08 | 1.00 | 2.00 | 0.045 | 0.030 | 10.00-13.00 | 16.00-18.00 | 2.00-3.00 | 0.10-0.16 | ||
| 14 | S31653 | 022Cr17Ni12Mo2N | 0.035 | 1.00 | 2.00 | 0.045 | 0.030 | 10.00-13.00 | 16.00-18.00 | 2.00-3.00 | 0.10-0.16 | ||
| 15 | S31688 | 06Cr18Ni12Mo2Cu2 | 0.08 | 1.00 | 2.00 | 0.045 | 0.030 | 10.00-14.00 | 17.00-19.00 | 1.20-2.75 | 1.00-2.50 | ||
| 16 | S31683 | 022Cr18Ni14Mo2Cu2 | 0.03 | 1.00 | 2.00 | 0.045 | 0.030 | 12.00-16.00 | 17.00-19.00 | 1.20-2.75 | 1.00-2.50 | ||
| 17 | S31708 | 06Cr19Ni13Mo3 | 0.08 | 1.00 | 2.00 | 0.045 | 0.030 | 11.00-15.00 | 18.00-20.00 | 3.00-4.00 | |||
| 18 | S31703 | 022Cr19Ni13Mo3 | 0.035 | 1.00 | 2.00 | 0.045 | 0.030 | 11.00-15.00 | 18.00-20.00 | 3.00-4.00 | |||
| 19 | S32168 | 06Cr18Ni11Ti | 0.08 | 1.00 | 2.00 | 0.045 | 0.030 | 9.00-12.00 | 17.00-19.00 | Ti5C-0.70 | |||
| 20 | S32169 | 07Cr19Ni11Ti | 0.04-0.10 | 1.00 | 2.00 | 0.030 | 0.030 | 9.00-12.00 | 17.00-19.00 | Ti4C-0.60 | |||
| 21 | S34778 | 06Cr18Ni11Nb | 0.08 | 1.00 | 2.00 | 0.045 | 0.030 | 9.00-13.00 | 17.00-19.00 | Nb.10C-1.10 | |||
| 22 | S34779 | 07Cr18Ni11Nb | 0.04-0.10 | 1.00 | 2.00 | 0.045 | 0.030 | 9.00-13.00 | 17.00-19.00 | Nb.8C-1.10 | |||
| Grade | C | Mn | P | S | Si | Cr | Ni | Mo | Nb | N | CU | B | AI |
| NO8904 | 0.020 | 2.0 | 0.040 | 0.030 | 1.00 | 19.0-23.0 | 23.0-28.0 | 4.0-5.0 | 0.10 | 1.0-2.0 | |||
| N08367 | 0.030 | 2.0 | 0.040 | 0.030 | 1.00 | 20.0-22.0 | 23.5-25.5 | 6.0-7.0 | 0.18-0.25 | 0.75 | |||
| S31254 | 0.020 | 1.0 | 0.030 | 0.010 | 0.80 | 19.5-20.5 | 17.5-18.5 | 6.0-6.5 | 0.18-0.22 | 0.5-1.0 | |||
| S30432 | 0.07-0.13 | 1.0 | 0.040 | 0.010 | 0.30 | 17.0-19.0 | 7.5-10.5 | 0.3-0.6 | 0.05-0.12 | 2.5-3.5 | 0.001-0.01 | 0.003-0.03 | |
| S31042 | 0.04-0.10 | 2.0 | 0.045 | 0.030 | 1.00 | 24.0-26.0 | 19.0-22.0 | 0.2-0.6 | 0.15-0.35 |
We have two pipe product manufacturing bases in Yantai, Shandong Province. One of them, the General Pipe Manufacturing Base, has a history of nearly 70 years and is equipped with five hot-rolling production lines and one cold-drawing production line, with an annual production capacity of up to 500,000 tons. Leveraging our mature production processes and economies of scale, our product range encompasses over 1,000 specifications of pipe products, fully compliant with international standards such as API 5L, ASTM A106, and ASTM A333. While ensuring quality, we also offer a leading price advantage.
Our high-standard pipeline product production base has a stable production capacity of 800,000 tons, primarily producing high-grade steel products such as API 5L X100 PSL2, API 5CT Super 13Cr, and ASTM A335 P91. Our product specifications cover a wide range, with a maximum outer diameter of 20 inches, a wall thickness of up to 70 millimeters, and a single-piece length of up to 36 meters, capable of meeting the demands of steel pipes in various harsh operating conditions.
FAQs
We have no minimum order quantity requirements. Even if you only need one steel pipe or one pipe fitting, we can deliver on time and provide comprehensive services. Please note that certain high-grade steel products may require temporary production scheduling, which may result in minimum order quantity requirements. For specific details, please consult our sales team.
Of course, we provide free samples for products priced below $1,000. You only need to cover the shipping costs. For products priced above $1,000, please contact our sales team to discuss specific fees.
For products that are in stock, we will complete the final processing, quality inspection, packaging, and other steps within two weeks and deliver them as soon as possible according to the shipping schedule. For products that need to be ordered for production, an additional 2-3 weeks of production time will be required depending on the quantity requested.
In addition to providing factory warranty certificates, we can also provide test reports from internationally recognized quality testing agencies such as SGS, TUV, and DNV upon customer request. We are also available to assist third-party testing agencies with process inspections and final inspections prior to shipment.
Of course! Whether it's our own factory, processing plant, or our partners' factories, we welcome you to visit and exchange ideas at any time. If you need our assistance with visa matters, please feel free to contact our sales manager.
We are both a supplier and a manufacturer. We have three processing plants and warehouses, as well as a seamless steel pipe factory. We also collaborate closely with other outstanding steel pipe and pipe fitting factories in China, enabling us to offer a wide range of product specifications and a complete product system.
The delivery of the product is just the beginning of our service. If you encounter any issues during use, please feel free to contact our online customer service team at any time, and we will address the matter promptly. Additionally, we have offices in Hong Kong, Thailand, and Malaysia, enabling us to provide on-site technical support as needed.
Resource integration and supply chain capabilities are our core strengths. We offer a wide range of product specifications and numerous product types. At the same time, our inventory and processing capabilities ensure the fastest delivery times. We also provide professional customized solutions and comprehensive after-sales service.
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A comprehensive supply chain system and resource integration capabilities are our core strengths. By establishing long-term, in-depth partnerships with numerous outstanding factories, we have built a complete product system, ensuring that you can purchase all supporting products in one place, thereby saving a significant amount of time and cost. With our deep understanding of the local market and long-term, stable procurement volume, we are able to provide the highest quality products at the same price point, helping you maintain a competitive edge in the fiercely competitive market.
We have a professional team of more than 20 people and extensive experience in international projects. We can tailor solutions to your specific needs and provide quick quotes. We have three leading steel pipe product processing plants in Yantai, Shandong and Cangzhou, Hebei, which can meet all your deep processing and customization needs.
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With a standing inventory capacity of 35,000 tons and a leading supply chain advantage, we achieve the fastest delivery times in the industry. We have offices in Hong Kong, Thailand, and Malaysia to ensure timely after-sales support for our customers. Our goal is to establish long-term partnerships with our customers, grow together, and create greater value.
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