347H Stainless Steel Tubes Supplier and Exporter | UNS S34709 & SUS 347H | Leoscor Alloy Pipes
347H Stainless Steel Tubes are high-carbon, niobium-stabilized austenitic stainless steel tubes designed for high-temperature applications requiring improved strength, oxidation resistance, and long-term reliability. The higher carbon content provides better creep strength and mechanical stability during continuous exposure to heat and pressure.
Leoscor Alloy Pipes is a trusted supplier, stockist, and exporter of SS 347H Tubes, offering seamless and welded tube solutions for industries operating under demanding thermal and pressure conditions. These tubes are manufactured using quality raw materials and are available in different sizes, wall thicknesses, finishes, and shapes as per customer requirements.
347H Stainless Steel Tubes are the high-carbon version of 347 stainless steel tubes developed for applications where improved high-temperature strength is required. The addition of niobium helps reduce carbide precipitation during welding and improves resistance against intergranular corrosion.
These tubes provide excellent oxidation resistance, weld stability, and mechanical strength during prolonged high-temperature service. SUS 347H Tubes are widely used in heat exchangers, boilers, refinery equipment, furnace components, power plants, petrochemical equipment, and high-temperature piping systems.
347H Stainless Steel Tubes are available in seamless and welded forms and can be supplied in different shapes including round, square, rectangular, oval, and hollow sections. The selection of tube size, wall thickness, pressure rating, and operating temperature depends on the specific application requirements.
Equivalent Names of 347H Stainless Steel Tubes
| Equivalent Name | Standard / Country | Explanation |
|---|---|---|
| UNS S34709 Tubes | USA (Unified Numbering System) | Material designation for high-carbon 347H stainless steel tubes. |
| SUS 347H Tubes | Japan (JIS Standard) | Japanese designation for 347H stainless steel tubes. |
Key Features of 347H Stainless Steel Tubes
- High Temperature Strength: Maintains mechanical strength during continuous heat exposure.
- Niobium Stabilization: Helps reduce carbide precipitation after welding and high-temperature service.
- Improved Creep Resistance: Suitable for long-term high-temperature applications.
- Excellent Oxidation Resistance: Performs reliably in thermal environments.
- Good Weld Stability: Suitable for welded components exposed to heat.
- Corrosion Resistance: Provides protection against intergranular corrosion.
- Long Service Life: Designed for demanding industrial conditions.
SS 347H Tubes Specifications
Standard specifications for SS 347H Tubes. 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 A213 / ASME SA213 / ASTM A249 / ASTM A269 |
| Dimensions | ASTM, ASME and API |
| SS 347H Tubes | 1/8″ NB to 30″ NB |
| Thickness | 0.35 mm to 6.35 mm OD, with thickness ranging from 0.1 mm to 1.2 mm. |
| Schedule | SCH 20, SCH 30, SCH 40, STD, SCH 80, XS, SCH 60, SCH 80, SCH 120, SCH 140, SCH 160, XXS |
| Type | Seamless / ERW / Welded / Fabricated / LSAW Tubes |
| Form | Round, Square, Rectangular, Hydraulic Tubes |
| Length | Single Random, Double Random & Cut Length |
| End | Plain End, Beveled End, Threaded |
347H Stainless Steel 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
Get Quote for Your Requirement
Contact Leoscor Alloys Pipes for high quality industrial pipes and tubes. Mail- info@leoscoralloypipes.com
Why Buy 347H Stainless Steel Tubes from Leoscor Alloys Pipes
Leoscor Alloys Pipes is a leading stockist, distributor, and supplier of 347H Stainless Steel 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.
347H SS Seamless Tubes Chemical Composition
| Grade | 347H | |
|---|---|---|
| min | max | |
| C | 0.04 | 0.10 |
| Mn | – | 2.0 |
| Si | – | 1.0 |
| P | – | 0.045 |
| S | – | 0.030 |
| Cr | 17.0 | 19.0 |
| Co+Ta | 8xC | 1.0 |
| Ni | 9.0 | 13.0 |
| N | – | – |
ASTM A213 SS 347H Welded Tubes Mechanical Properties
| Grade | 347H | |
|---|---|---|
| Tensile Strength (MPa) min | 515 | |
| Yield Strength 0.2% Proof (MPa) min | 205 | |
| Elongation (% in 50mm) min | 35 | |
| Hardness | Rockwell B (HR B) max | 92 |
| Rockwell B (HR B) max | 201 | |
Stainless Steel 347H Tubes Physical Properties
| Grade | 347H | |
|---|---|---|
| Density (kg/m3) | 8000 | |
| Elastic Modulus (GPa) | 193 | |
| Mean Coefficient of Thermal Expansion (m/m/0C) | 0-1000C | 15.9 |
| 0-3150C | 16.2 | |
| 0-5380C | 17.0 | |
| Thermal Conductivity (W/m.K) | at 1000C | 14.2 |
| at 5000C | 18.7 | |
| Specific Heat 0-1000C (J/kg.K) | 500 | |
| Electrical Resistivity (n.m) | 740 | |
Types of Stainless Steel 347H Tubes
| Stainless Steel 347H Welded Tubes | 347H SS Welded Tubes |
| 347H Stainless Steel Seamless Tubes | SS 347H Seamless Tubes |
| SS 347H ERW Tubes | 347H Stainless Steel ERW Tubes |
| 347H SS Fabricated Tubes | Stainless Steel 347H Fabricated Tubes |
| SS 347H LSAW Tubes | 347H Stainless Steel LSAW Tubes |
| 347H Stainless Steel Polished Tubes | SS 347H Polished Tubes |
| Stainless Steel 347H Cold Drawn Tubes | 347H SS Cold Drawn Tubes |
| 347H SS Hot Rolled Tubes | Stainless Steel 347H Hot Rolled Tubes |
| SS 347H Cold Rolled Tubes | 347H Stainless Steel Cold Rolled Tubes |
| Stainless Steel 347H Square Tubes | 347H SS Round Tubes |
| 347H SS Hexagonal Tubes | Stainless Steel 347H Tubes |
Stainless Steel 347H Tubes Price List
Leoscor Alloys is one of the most competitive suppliers of pipes and tubes from India. Our prices for SS 347H 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 347H Stainless Steel Seamless and Welded Tubes.
ASTM A213 SS 347H 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 Stainless Steel 347H Tubes.
Prominent Countries where we export 347H SS 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
