Austenitic
Duplex Steel
Nickel Alloy
Cobalt Alloy

High Toughness ASTM 269 321 stainless tube   

Factory advantages and features：

1. 321 stainless tube supplier invested by MTSCO - Huxin Pipe, a highly reliable seamless pipe manufacturer with 36 years of experience in pipe production

2. Diversified pipe sizes - in addition to the regular sizes, we can also produce 18 metres and 25 metres pipe extensions.

3. Well-equipped production and inspection - plant facilities include cold rolling mills, annealing furnaces, pickling baths, ultrasonic eddy current integration, and physical and chemical laboratories

4. Complete quality control process - in addition to factory technicians, full-time MTSCO quality inspectors are on site before, during and after production.

5. Complete certifications - we have ISO/PED/AD2000/M650 certifications.

Introduction to Quality Control Inspection Methods：

Quality Assurance for Raw Materials of 321 Stainless tube

Our raw materials, sourced from esteemed steel mills such as Baosteel and Tsingshan, undergo stringent warranty and PMI checks to ensure top-notch quality. Stringent PMI checks and other inspections guarantee compliance with material specifications.

Supervised Production Process of 321 Stainless tube

From cold rolling, cold drawing, annealing, to pickling and surface treatment, 321 stainless tube manufacturing process is meticulously overseen. Skilled engineers, equipped with advanced tools, supervise each phase and capture detailed records through photography. Process cards guarantee precision and traceability throughout production.

Quality Assurance Before Shipment of 321 Stainless tube

Our dedicated QC team conducts comprehensive inspections, encompassing appearance, PMI, size, quantity, and more. Mechanical, hardness, ultrasonic, eddy current, and hydraulic tests are carried out. We also welcome third-party evaluations (SGS, TUV, BV) and ensure secure packaging and container reinforcement to ensure product integrity during transportation.

Packing of 321 Stainless tube

Material Characteristics and Applications：

321 stainless tube has excellent material properties. It is an austenitic stainless steel with titanium added to 304 stainless steel. The addition of titanium can effectively prevent the precipitation of chromium carbide, thereby significantly improving the resistance to intergranular corrosion. The material has good high-temperature stability and can be used for a long time in a high-temperature environment between 870℃ and 925℃. It not only has excellent antioxidant properties, but also has mechanical properties, processing properties and welding properties similar to 304. It is a stainless steel material with excellent comprehensive performance.

In terms of application, 321 stainless tube is widely used in industries that require high temperature, high strength and good corrosion resistance. Typical applications include petrochemical equipment (such as heat exchangers, reactors), superheaters and reheaters in boiler systems, aircraft engine parts, automobile exhaust systems, and heating treatment links in food equipment. Its stability in long-term high-temperature environments makes it one of the indispensable high-performance materials in industry.

Company Introduction：

MTSCO is a leading manufacturer specializing in the production of stainless steel seamless tube, U-tubes, serpentine pipes and other precision pipes. We also produce high-performance products such as duplex steel pipes and nickel alloy seamless pipes. MTSCO has advanced production lines and complete testing equipment, which can efficiently meet the customized needs of various industries for 321 stainless tube. We strictly produce according to international standards to ensure that each 321 seamless tube has precise outer diameter and wall thickness tolerances. Our products are exported to Europe, the Middle East, Southeast Asia, South America and other regions, and are widely recognized and trusted by customers. MTSCO can provide a variety of surface treatment options such as bright annealed seamless pipes and pickled seamless pipes to meet the use needs of different industries.