321 Stainless Steel Pipe | High Temperature Seamless & Welded Tubes

Product Overview

Our 321 stainless steel pipes and tubes are specially designed for high-temperature applications where standard 304/316 pipes may fail. 321 is titanium-stabilized austenitic stainless steel, offering excellent resistance to intergranular corrosion after welding and superior oxidation resistance up to 870°C (1600°F).

Key Features of 321 Stainless Steel

• High-Temperature Strength: Resists scaling and oxidation at elevated temperatures
• Weldability: Titanium stabilization prevents intergranular corrosion after welding
• Durability: Longer service life in heat exchangers, boilers, and automotive exhaust systems
• Cost-Effective: A reliable alternative to higher-cost heat-resistant alloys

Sizes & Specifications

Surface Finish & Custom Processing

1. Surface: 2B, Annealed & Pickled, HL, Mirror Polished
2. Processing: Cutting, bending, perforation, and custom fabrication

Typical Applications

• Heat exchangers and boiler tubes
• Automotive and aerospace exhaust systems
• Furnace and kiln components
• High-temperature chemical and petrochemical pipelines

Our Factory Advantages

As a specialized stainless steel manufacturer in China, Wuxi Xinshanhu Steel provides:

• Dedicated 321 pipe production lines for seamless and welded types
• ISO 9001 certified manufacturing and strict quality control
• Custom solutions for high-temperature applications
• Global export experience with on-time delivery and technical support

Many clients choose us because we combine stable quality with factory-direct pricing, helping them reduce cost while ensuring reliable performance in harsh environments.

Get a Quote

Looking for 321 stainless steel pipes for your high-temperature projects? Contact us today for a detailed quotation, sample inspection, and professional support. We welcome bulk orders and long-term cooperation.

Company Profile

Wuxi Xinshanhu Steel Co., Ltd. is an eleven-year-old Chinese alloy manufacturer with rich production experience, well-trained workers and excellent engineers. Our factory has a mature production system and multiple steel production lines. Including Cold-rolled flat cutting machine, Hot-rolled flat cutting machine; High-speed flat cutting machine; Precision high-speed slitting machine, Ultra high pressure water jet cutting machine; Sheet fiber laser cutting machine; Thin-walled cylinder longitudinal seam automatic welding machine and Machine shop. Our products include Hastelloy, Incoloy, Inconel, Monel, Nickel Alloy, Nickel Alloy, Titanium Alloy, Haynes, etc. The supply styles include plates, strips, rods, wires, forgings, bare rods, welding materials, flanges, etc. We support custom-made according to drawings.

                                                             
                       

Certificate Qualifications Owned By The Compan         

           

 

FAQ

Q1. Where is your factory?

A1: Our company’s processing center is located in Wuxi, Jiangsu, China. It is well equipped with kinds of machines, such as laser cutting machine, mirror polishing machine and so on. We can provide a wide range of personalized services according to the customers’ needs.

Q2. What are your company's main products?

A2: Our products include Hastelloy, Incoloy, Inconel, Monel, Nickel Alloy, Nickel Alloy, Titanium Alloy, Haynes, etc.The supply styles include plates, strips, rods, wires, forgings, bare rods, welding materials, flanges, etc. We support custom-made according to drawings.

Q3. How do you control quality?

A3: Mill Test Certification is supplied with shipment, Third Party Inspection is available.

Q4. What are the advantages of your company?

A4: We have many professionals, technical personnel, more competitive prices, and best after-sales service than other alloy companies.

Q5. How many countries have you already exported to?

A5: Exported to more than 50 countries mainly from America, Russia, UK, Kuwait, Egypt, Turkey, Jordan, India, etc.

Q6. Do you provide samples? is it free or extra?

A6: Yes, we could offer the sample for free charge but do not pay the cost of freight.