SUS 321H Tubes Supplier and Exporter | Leoscor Alloy Pipes
Leoscor Alloy Pipes is a trusted manufacturer, stockist, and exporter of high-quality SUS 321H Tubes, supplying heat-resistant and corrosion-resistant stainless steel tubing solutions for industries across India and international markets.
SUS 321H Stainless Steel Tubes are titanium-stabilized austenitic stainless steel tubes designed for high-temperature applications where excellent mechanical strength, corrosion resistance, and long-term durability are required. The higher carbon content in 321H provides improved creep strength and enhanced performance at elevated temperatures compared to standard 321 grade tubes.
At Leoscor Alloy Pipes, we manufacture and supply 321H Stainless Steel Tubes in various sizes, shapes, finishes, and specifications to meet customer-specific requirements. Our products are manufactured using quality raw materials and advanced technology to ensure reliable performance.
Key Benefits of SUS 321H Tubes
SUS 321H Stainless Steel Tubes from Leoscor Alloy Pipes offer several advantages, including:
- Excellent high-temperature strength
- Superior creep resistance
- Improved resistance to carbide precipitation
- Excellent resistance to intergranular corrosion
- Good weldability and fabrication properties
- Long service life in demanding environments
Stainless Steel SUS 321H Tubes Specifications
Standard specifications for stainless steel SUS 321H Tubes. 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/ASME SA213/A249/A269 |
| Dimensions | ASTM, ASME and API |
| SUS 321H Tubes | 1/8″NB TO 30″NB IN |
| Thickness | 0.35mm to 6.35mm OD in thickness ranging from 0.1mm to 1.2mm. |
| Schedule | SCH20, SCH30, SCH40, STD, SCH80, XS, SCH60, SCH80, SCH120, SCH140, SCH160, XXS |
| Type | Seamless / ERW / Welded / Fabricated / LSAW Tubes |
| Form | Round, Square, Rectangular, Hydraulic Etc |
| Length | Single Random, Double Random & Cut Length. |
| End | Plain End, Beveled End, Treaded |
Types of SUS 321H Tubes
| Stainless Steel SUS 321H Welded Tubes | SUS 321H SS Welded Tubes |
| SUS 321H Stainless Steel Seamless Tubes | SS SUS 321H Seamless Tubes |
| SS SUS 321H ERW Tubes | SUS 321H Stainless Steel ERW Tubes |
| SUS 321H SS Fabricated Tubes | Stainless Steel SUS 321H Fabricated Tubes |
| SS SUS 321H LSAW Tubes | SUS 321H Stainless Steel LSAW Tubes |
| SUS 321H Stainless Steel Polished Tubes | SS SUS 321H Polished Tubes |
| Stainless Steel SUS 321H Cold Drawn Tubes | SUS 321H SS Cold Drawn Tubes |
| SUS 321H SS Hot Rolled Tubes | Stainless Steel SUS 321H Hot Rolled Tubes |
| SS SUS 321H Cold Rolled Tubes | SUS 321H Stainless Steel Cold Rolled Tubes |
| Stainless Steel SUS 321H Square Tubes | SUS 321H SS Round Tubes |
| SUS 321H SS Hexagonal Tubes | Stainless Steel SUS 321H Tubes |
321H SUS Tubes Seamless Chemical Composition
| Grade | SUS 321H | |
|---|---|---|
| min | max | |
| C | 0.04 | 0.10 |
| Mn | – | 2.0 |
| Si | – | 1.0 |
| P | – | 0.045 |
| S | – | 0.030 |
| Cr | 17.0 | 19.0 |
| Ti | 5(C+N) | 0.70 |
| Ni | 9.0 | 12.0 |
| N | – | 0.10 |
ASTM A213 SUS 321H Welded Tubes Mechanical Properties
| Grade | SUS 321H | |
|---|---|---|
| Tensile Strength (MPa) min | 515 | |
| Yield Strength 0.2% Proof (MPa) min | 205 | |
| Elongation (% in 50mm) min | 35 | |
| Hardness | Rockwell B (HR B) max | – |
| Brinell (HB) max | – | |
SUS 321H Tubes Physical Properties
| Grade | SUS 321H | |
|---|---|---|
| Density (kg/m3) | 8000 | |
| 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 SUS 321H Tubes Equivalent Grades
| Grade | 321H | |
| UNS No | S32109 | |
| Old British | BS | – |
| En | X12CrNiTi18-9 | |
| Euronorm | No | 1.4878 |
| AFNOR | – | |
| Swedish SS | – | |
| Japanese JIS | SUS 321H | |
| GOST | – | |
SUS 321H Tubes Price List
Leoscor Alloys is one of the most competitive suppliers of pipes and tubes from India. Our prices for SUS 321H Tubes 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 Stainless Steel Seamless and Welded Tubes.
Stainless Steel SUS 321H Seamless Tubes - 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
ASTM A213 SUS 321H Tubing 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 Tubes.
Why Buy SUS 321H Tubes from Leoscor Alloys
Leoscor Alloys is a leading stockist, distributor, and supplier of 321H SUS Tubes 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 SUS 321H Tubes
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:
- Tubes exporters to Singapore
- Tubes exporters to Malaysia
- Tubes exporters to Hongkong
- Tubes exporters to Thailand
- Tubes exporters to Indonesia
- Tubes exporters to Taiwan










