Your Professional Duplex Stainless Pipe Or Tube Supplier
Jiangsu Cunrui Metal Products Co., Ltd. was established on March 24, 2016. It is a modern enterprise specializing in the production and export of high-quality metal pipes.
Our company is a significant manufacturer of high-quality metal materials in China. Our product range includes stainless steel, carbon steel, alloy steel, silicon steel, etc., which are widely used in the medical, food, construction and other industries.
Parameter
|
Parameter |
Specification |
|
Grade / Standard |
S32101 Duplex Stainless Steel Pipe / Tube |
|
Standards |
ASTM A789, ASME SA789, EN 1.4162 |
|
Outer Diameter |
12mm – 610mm (customizable) |
|
Wall Thickness |
1.0mm – 25mm |
|
Length |
2000mm – 12000mm or as per customer requirement |
|
Surface Finish |
Pickled, 2B, BA, Polished |
|
Yield Strength (Rp0.2) |
≥ 450 MPa |
|
Tensile Strength (Rm) |
620 – 750 MPa |
|
Elongation (%) |
≥ 25% |
|
Hardness |
≤ 280 HB |
|
Corrosion Resistance |
Excellent against general corrosion and moderate chloride attack |
|
Certificates |
MTC, ISO 9001, SGS, BV, TÜV |
Customization Process
Customization Process
Custom size can be tailored to meet specific customer requirements. Please provide your customization concepts and detailed specifications for further discussion.
Production Execution
Following the confirmed design, we implement meticulous production processes with strict quality control at every stage, ensuring consistency and precision before proceeding to mass production.
Quality Inspection and Packaging
Upon completion of the product, a comprehensive three-stage inspection process is conducted to ensure quality standards are met. Subsequently, the products are packaged in accordance with your specified requirements.
Delivery Assurance
We ensure timely delivery of the products within the agreed timeframe as per the contract terms.
Benefits of Duplex Stainless Pipe Or Tube

Enhanced Corrosion Resistance
Duplex steel pipes are highly resistant to corrosion, making them an ideal solution for applications in aggressive environments.

High Strength
With excellent tensile strength, duplex pipes can handle high-pressure applications, reducing the need for heavier pipe materials.

Good Weldability
Duplex pipes offer better weldability than other materials, ensuring a smoother fabrication process and high-quality welds.

Resistance to Stress Corrosion Cracking
The unique structure of duplex steel reduces the risk of stress corrosion cracking, which can be a significant concern in certain applications.
Manufacturing of Duplex Stainless Pipe Or Tube
Raw Material Selection
High-quality duplex stainless steel is selected based on industry standards.
Forging & Forming
The steel is heated and shaped into the required fitting dimensions.
Heat Treatment
The fittings undergo annealing to enhance mechanical properties and corrosion resistance.
Machining & Finishing
Precision machining ensures accurate dimensions, followed by surface finishing treatments.
Testing & Quality Control
Rigorous inspections such as hydrostatic, ultrasonic, and mechanical tests are performed to ensure compliance with industry standards.
Final Inspection & Packaging
The fittings are inspected for defects and securely packaged for safe transportation.
Application of Duplex Stainless Pipe
Oil And Gas Industry
Duplex stainless pipe or tube is widely used in oil and gas extraction and transportation pipelines. Its high strength and corrosion resistance make it ideal for long-term operation in harsh environments, preventing leaks caused by corrosion.
Chemical Processing
This duplex stainless steel is commonly used in the chemical industry, particularly in environments exposed to strong acids, alkalis, and other corrosive chemicals. Its excellent corrosion resistance extends the lifespan of equipment and pipelines, reducing maintenance costs.
Marine Engineering
Duplex stainless pipe or tube is highly resistant to seawater corrosion, making it ideal for offshore structures such as oil rigs and ships. Its superior mechanical properties and corrosion resistance make it suitable for long-term use in marine environments.
Food And Pharmaceutical Industry
Due to its excellent corrosion resistance and hygienic properties, duplex stainless pipe or tube is widely used in food processing and pharmaceutical equipment. It helps prevent bacterial and other contaminants from growing, ensuring product safety and quality.
Transportation
Whether it is air freight, express delivery, or sea freight, we can arrange shipments according to the time required by customers. We help customers inquire about the best rates and arrange the delivery of your goods in the most economical way. This allows you to control the schedule of the entire project to meet seasonal cargo demand.
Certificate

FAQ
As one of the most experienced duplex stainless pipe or tube manufacturers in China, we also support customized service. Please rest assured to buy cheap duplex stainless pipe or tube for sale here from our factory. If you have any enquiry about pricelist and free sample, please feel free to email us.