SUS 321H Pipes Supplier and Exporter | Leoscor Alloy Pipes
Leoscor Alloy Pipes is a trusted manufacturer, stockist, and exporter of high-quality SUS 321H Stainless Steel Pipes, supplying certified, durable, and corrosion-resistant piping solutions for customers across India and international markets.
SUS 321H Pipes are an improved version of 321 stainless steel pipes with a higher carbon content, providing enhanced high-temperature strength and improved performance in elevated temperature applications. These stabilized austenitic stainless steel pipes offer excellent resistance to oxidation and corrosion in demanding industrial environments.
Our 321H Stainless Steel Pipes are available in different sizes, wall thicknesses, shapes, and finishes to meet various industrial requirements. With advanced manufacturing processes and strict quality control, Leoscor Alloy Pipes ensures accurate dimensions, reliable performance, and long service life.
Key Benefits of SUS 321H Pipes
SUS 321H Stainless Steel Pipes from Leoscor Alloy Pipes offer several advantages, including:
- Excellent high-temperature strength
- Superior resistance to oxidation and corrosion
- Improved creep resistance
- Excellent welding and forming properties
- Strong performance in carbide precipitation temperature ranges
- Long service life in demanding environments
SUS 321H Pipes Specifications
Standard specifications for stainless steel SUS 321H Pipes. If any specification is not mentioned here, you can contact us. We also manufacture and export any custom specification as per clients requirement.
| Specifications | ASTM A 312 ASME SA 312 / ASTM A 358 ASME SA 358 |
| Dimensions | ASTM, ASME and API |
| SS 321H Pipes | 1/2″ NB – 16″ NB |
| ERW 321H Pipes | 1/2″ NB – 24″ NB |
| EFW 321H Pipes | 6″ NB – 100″ NB |
| Size | 1/8″NB TO 30″NB IN |
| 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 Pipe, “U” Shape, Hydraulic Pipes |
| Length | Single Random, Double Random & Cut Length. |
| End | Plain End, Beveled End, Treaded |
Types of SUS 321H Pipes
| SS SUS 321H Welded Pipes | SUS 321H Stainless Steel Welded Pipes |
| Steel SUS 321H Welded Pipes | SS SUS 321H Seamless Pipes |
| SUS 321H Stainless Steel Seamless Pipes | Steel SUS 321H Seamless Pipes |
| SS SUS 321H ERW Pipes | SUS 321H Stainless Steel ERW Pipes |
| Steel SUS 321H ERW Pipes | SS SUS 321H Fabricated Pipes |
| SUS 321H Stainless Steel Fabricated Pipes | Steel SUS 321H Fabricated Pipes |
| SS SUS 321H LSAW Pipes | SUS 321H Stainless Steel LSAW Pipes |
| Steel SUS 321H LSAW Pipes | Stainless Steel SUS 321H Pipes |
321H SUS Pipes Chemical Composition
| Grade | 321H | |
|---|---|---|
| min | max | |
| C | 0.04 | 0.10 |
| Mn | – | 2.0 |
| Si | – | 1.00 |
| P | – | 0.045 |
| S | – | 0.030 |
| Cr | 17.0 | 19.0 |
| Mo | – | – |
| Ni | 9.0 | 12.0 |
| N | – | – |
321HSUS Pipes Mechanical Properties
| Grade | 321H | |
|---|---|---|
| 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 | |
SUS 321H Pipes Physical Properties
| Grade | 321H | |
|---|---|---|
| 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 | |
SUS 321H Stainless Steel Pipes Equivalent Grades
| Grade | 321H | |
| UNS No | S32109 | |
| Old British | BS | 321S51 |
| En | – | |
| Euronorm | No | 1.4878 |
| Name | X10CrNiTi18-10 | |
| Swedish SS | – | |
| Japanese JIS | SUS 321H | |
SUS 321H Pipes Price List
Leoscor Alloys is one of the most competitive suppliers of pipes and tubes from India. Our prices for SUS 321H 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 321H SUS Seamless and Welded Pipes.
321H SUS 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
SUS 321H 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 SUS 321H Pipes.
Why Buy 321H SUS Pipes from Leoscor Alloys
Leoscor Alloys is a leading stockist, distributor, and supplier of 321H SUS Pipes from India. With more than three decades of experience, we understand the steel industry deeply. We have huge experience of supplying to all major industries across the world. Our team of dedicated experts with stringent quality policy ensures that we supply best-in-class products meeting and exceeding our client’s expectations. Below are a few quick points about why buying from Leoscor Alloys will give you an undue advantage:
- 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 321H SUS 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:
- Pipes exporters to Singapore
- Pipes exporters to Malaysia
- Pipes exporters to Hongkong
- Pipes exporters to Thailand
- Pipes exporters to Indonesia
- Pipes exporters to Taiwan









