321 Stainless Steel Pipes Supplier and Exporter | UNS S32100, SUS 321 & DIN 1.4541 | Leoscor Alloy Pipes
321 Stainless Steel Pipes are titanium-stabilized austenitic stainless steel pipes designed for applications requiring excellent heat resistance, corrosion resistance, and long-term durability under elevated temperature conditions.
Leoscor Alloy Pipes is a trusted manufacturer, stockist, supplier, and exporter of SS 321 Pipes, providing high-quality piping solutions in different sizes, wall thicknesses, schedules, and customized specifications according to industrial requirements.
SS 321 Pipes are titanium-stabilized stainless steel pipes developed from the 304 stainless steel family. The addition of titanium helps prevent carbide precipitation during welding and high-temperature exposure, improving resistance against intergranular corrosion.
These pipes maintain good mechanical strength and corrosion resistance during prolonged service at elevated temperatures. Due to their stable performance, 321 Stainless Steel Pipes are widely used in thermal, chemical, and industrial applications.
The grade is internationally identified through different material designations including UNS S32100 Stainless Steel Pipes, SUS 321 Stainless Steel Pipes, DIN 1.4541 Stainless Steel Pipes, and X6CrNiTi18-10 Stainless Steel Pipes.

Equivalent Names of 321 Stainless Steel Pipes
| Equivalent Name | Standard / Country | Explanation |
|---|---|---|
| UNS S32100 Stainless Steel Pipes | USA (Unified Numbering System) | Material designation used for SS 321 Pipes. |
| SUS 321 Stainless Steel Pipes | Japan (JIS/SUS Standard) | Japanese designation used for SS 321 Pipes. |
| DIN 1.4541 Stainless Steel Pipes | Germany / Europe (DIN/EN Standard) | European material number for SS 321 Pipes. |
| X6CrNiTi18-10 Stainless Steel Pipes | EN Common Designation | European chemical designation for SS 321 material. |
Key Benefits of 321 Stainless Steel Pipes
321 Stainless Steel Pipes supplied by Leoscor Alloy Pipes offer the following advantages:
- Excellent High-Temperature Performance: Maintains strength and stability during prolonged heat exposure.
- Titanium Stabilization: Helps prevent carbide precipitation and improves resistance against intergranular corrosion.
- Superior Corrosion Resistance: Performs well against oxidation, organic chemicals, and corrosive environments.
- Good Weldability: Suitable for fabrication and welding operations.
- High Durability: Provides long service life in demanding industrial conditions.
- Wide Temperature Capability: Performs effectively in both high-temperature and cryogenic applications.
- Multiple Configurations: Available in seamless, welded, ERW, EFW, and fabricated forms.
SS 321 Pipes Specifications
Standard specifications for SS 321 Pipes. If any specification is not mentioned here, you can contact us. We also manufacture and export custom specifications as per client’s requirements.
| Specifications | Details |
|---|---|
| Specifications | ASTM A312 / ASME SA312, ASTM A358 / ASME SA358 |
| Dimensions | ASTM, ASME and API |
| SS 321 Pipes | 1/2″ NB – 16″ NB |
| ERW 321 Pipes | 1/2″ NB – 24″ NB |
| EFW 321 Pipes | 6″ NB – 100″ NB |
| Size | 1/8″ NB to 30″ NB |
| Schedule | SCH20, SCH30, SCH40, STD, SCH80, XS, SCH60, SCH80, SCH120, SCH140, SCH160, XXS |
| Type | Seamless / ERW / Welded / Fabricated / LSAW Pipes |
| Form | Round Pipes, Custom Pipes, Square Pipes, Rectangular Pipes, “U” Shape, Hydraulic Pipes |
| Length | Single Random, Double Random & Cut Length |
| End | Plain End, Beveled End, Threaded |
321 SS Pipes - Industries & Applications
Our pipes and tubes are used in a wide range of applications and various industries. Below are a few of them:
- Gas Processing Industries
- Petrochemical Industries
- Power Generation Industries
- Food Processing Industries
- Chemical Industries
- Oil & Gas Industries
- Fertilizers Industries
- Sugar Industries
Get Quote for Your Requirement
Contact Leoscor Alloys Pipes for high quality industrial pipes and tubes. Mail- info@leoscoralloypipes.com
Types of Stainless Steel 321 Pipes
| SS 321 Welded Pipes | 321 Stainless Steel Welded Pipes |
| Steel 321 Welded Pipes | SS 321 Seamless Pipes |
| 321 Stainless Steel Seamless Pipes | Steel 321 Seamless Pipes |
| SS 321 ERW Pipes | 321 Stainless Steel ERW Pipes |
| Steel 321 ERW Pipes | SS 321 Fabricated Pipes |
| 321 Stainless Steel Fabricated Pipes | Steel 321 Fabricated Pipes |
| SS 321 LSAW Pipes | 321 Stainless Steel LSAW Pipes |
| Steel 321 LSAW Pipes | Stainless Steel 321 Pipes |
321 SS Pipes Chemical Composition
| Grade | 321 | |
|---|---|---|
| min | max | |
| C | – | 0.08 |
| Mn | – | 2.0 |
| Si | – | 0.75 |
| P | – | 0.045 |
| S | – | 0.030 |
| Cr | 17.0 | 19.0 |
| Mo | – | – |
| Ni | 9.0 | 12.0 |
| N | – | 0.10 |
321 SS Pipes Mechanical Properties
| Grade | 321 | |
|---|---|---|
| Tensile Strength (MPa) min | 515 | |
| Yield Strength 0.2% Proof (MPa) min | 205 | |
| Elongation (% in 50mm) min | 40 | |
| Hardness | Rockwell B (HR B) max | 95 |
| Rockwell B (HR B) max | 217 | |
SS 321 Pipes Physical Properties
| Grade | 321 | |
|---|---|---|
| Density (kg/m3) | 8027 | |
| Elastic Modulus (GPa) | 193 | |
| Mean Coefficient of Thermal Expansion (m/m/0C) | 0-1000C | 16.6 |
| 0-3150C | 17.2 | |
| 0-5380C | 18.6 | |
| Thermal Conductivity (W/m.K) | at 1000C | 16.1 |
| at 5000C | 22.2 | |
| Specific Heat 0-1000C (J/kg.K) | 500 | |
| Electrical Resistivity (n.m) | 720 | |
Stainless Steel 321 Pipes Price List
Leoscor Alloys is one of the most competitive suppliers of pipes and tubes from India. Our prices for SS 321 Pipes are very competitive.
Please click on the request a quote button or click here to request the updated price list and ready stock information along with your requirement. Leoscor Alloys maintains a stock of all standard items and can export them at best price for 321 Stainless Steel Seamless and Welded Pipes.
Stainless Steel 321 Pipes Stock Availability
We maintain huge inventories of all standard sizes and grades. Please send us your complete requirement and we will send you the availability with the best quote for Stainless Steel 321 Pipes.
- Huge inventory of all standard sizes and grades.
- Distributors of all reputed origins and manufacturers.
- Strict quality control policies and highly experienced team.
- Strong logistics & delivery channels.
- Modern Infrastructure with huge storage capacity.
- An ISO 9000:2015 Certified Company.
Prominent Countries where we export 321 SS Pipes
Exporting Pipes & Tubes to Singapore, Malaysia, Hongkong, Thailand, Indonesia, Taiwan. Other countires includes Afghanistan, Albania, Andorra, Austria, Bahrain, Bangladesh, Bhutan, Brunei, Belarus, Belgium, Bulgaria, Cambodia, China, Cyprus, Croatia, Czech Republic, Denmark, Estonia, Egypt, Finland, France, Germany, Greece, Georgia, Hungary, Iceland, Ireland, Italy, Iran, Iraq, Israel, Japan, Jordan, Kazakhstan, Kuwait, Kyrgyzstan, Lebanon, Latvia, Latin America, Liechtenstein, Lithuania, Luxembourg, Malta, Moldova, Monaco, Maldives, Mongolia, Myanmar (Burma), Nepal, North Korea, Netherlands, Norway, Oman, Poland, Portugal, Pakistan, Palestine, Philippines, Qatar, Russia, Romania, Russia, San Marino, Serbia and Montenegro, Slovakia, Slovenia, Spain, Sweden, Switzerland, Saudi Arabia, South Korea, South Africa, Sri Lanka, Syria, Tanzania, Tajikistan, Thailand, Turkey, Turkmenistan, Ukraine, United Kingdom, United Arab Emirates (UAE), Uzbekistan, Vietnam, Yemen.
We are one of the top:
- 321 SS Pipes exporters to Singapore
- 321 SS Pipes exporters to Malaysia
- 321 SS Pipes exporters to Hongkong
- 321 SS Pipes exporters to Thailand
- 321 SS Pipes exporters to Indonesia
- 321 SS Pipes exporters to Taiwan
- 321 SS Pipes exporters to Turkey
- 321 SS Pipes exporters to Qatar
- 321 SS Pipes exporters to Oman
- 321 SS Pipes exporters to Bahrain
- 321 SS Pipes exporters to Jordan
- 321 SS Pipes exporters to Egypt
- 321 SS Pipes exporters to Italy
- 321 SS Pipes exporters to South Africa









