347 Stainless Steel Tubes Supplier and Exporter | UNS S34700, SUS 347 & DIN 1.4550 | Leoscor Alloy Pipes
347 Stainless Steel Tubes are niobium-stabilized austenitic stainless steel tubes designed for applications requiring high-temperature strength, corrosion resistance, and reliable performance after welding. The addition of niobium helps reduce carbide precipitation during welding and improves resistance against intergranular corrosion.
Leoscor Alloy Pipes is a trusted supplier, stockist, and exporter of SS 347 Tubes, offering seamless and welded tube solutions for industries operating under high-temperature and corrosive conditions. Our tubes are available in different sizes, wall thicknesses, finishes, and shapes according to customer requirements.
347 Stainless Steel Tubes are niobium-stabilized austenitic stainless steel tubes developed for welded structures and high-temperature applications. Niobium addition improves stability during welding and prolonged heat exposure by reducing chromium carbide formation.
These tubes provide excellent weld strength, oxidation resistance, and protection against intergranular corrosion. SUS 347 Tubes are widely used in high-temperature process lines, refining equipment, heat exchangers, furnace components, boiler parts, and chemical processing systems.
347 Stainless Steel Tubes are available in seamless and welded forms and can be supplied in various shapes including round, square, rectangular, oval, and hollow sections. The selection of tube size, wall thickness, pressure rating, and operating temperature depends on the application requirements.
Equivalent Names of 347 Stainless Steel Tubes
| Equivalent Name | Standard / Country | Explanation |
|---|---|---|
| UNS S34700 Tubes | USA (Unified Numbering System) | Material designation used for niobium-stabilized 347 stainless steel tubes. |
| SUS 347 Tubes | Japan (JIS Standard) | Japanese designation used for 347 stainless steel tubes. |
| DIN 1.4550 Tubes | Germany / Europe (DIN Standard) | European material number used for 347 stainless steel tubes. |
| X6CrNiNb18-10 Tubes | Europe (EN Chemical Designation) | Chemical composition designation representing 347 stainless steel grade. |
Key Features of 347 Stainless Steel Tubes
- Niobium Stabilization: Helps prevent carbide precipitation during welding and high-temperature service.
- Excellent Weld Stability: Suitable for welded components exposed to heat.
- High Temperature Performance: Maintains strength under elevated temperature conditions.
- Good Oxidation Resistance: Performs reliably in thermal environments.
- Corrosion Resistance: Provides protection against intergranular corrosion.
- Long Service Life: Suitable for continuous industrial operations.
- Multiple Forms Available: Supplied in seamless, welded, and customized tube forms.
Why Buy 347 Stainless Steel Tubes from Leoscor Alloys
Leoscor Alloys is a leading stockist, distributor, and supplier of 347 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:
SS 347 Tubes Specifications
Standard specifications for SS 347 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 347 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 |
347 SS Seamless Tubes Chemical Composition
| Grade | 347 | |
|---|---|---|
| min | max | |
| C | – | 0.08 |
| Mn | – | 2.0 |
| Si | – | 1.0 |
| P | – | 0.040 |
| S | – | 0.030 |
| Cr | 17.0 | 20.0 |
| Mo | – | – |
| Ni | 9.0 | 13.0 |
| N | – | – |
ASTM A213 SS 347 Welded Tubes Mechanical Properties
| Grade | 347 | |
|---|---|---|
| Tensile Strength (MPa) min | 515 | |
| Yield Strength 0.2% Proof (MPa) min | 205 | |
| Elongation (% in 50mm) min | 40 | |
| Hardness | Rockwell B (HR B) max | 92 |
| Rockwell B (HR B) max | 201 | |
Stainless Steel 347 Tubes Physical Properties
| Grade | 347 | |
|---|---|---|
| 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 | |
SS 347 Tubes Equivalent Grades
| Grade | 347 | |
| UNS No | S34700 | |
| Old British | BS | – |
| En | X6CrNiNb18-10 | |
| Euronorm | No | 1.4550 |
| AFNOR | – | |
| Swedish SS | – | |
| Japanese JIS | SUS 347 | |
| GOST | 08Ch18N12B | |
Types of Stainless Steel 347 Tubes
| Stainless Steel 347 Welded Tubes | 347 SS Welded Tubes |
| 347 Stainless Steel Seamless Tubes | SS 347 Seamless Tubes |
| SS 347 ERW Tubes | 347 Stainless Steel ERW Tubes |
| 347 SS Fabricated Tubes | Stainless Steel 347 Fabricated Tubes |
| SS 347 LSAW Tubes | 347 Stainless Steel LSAW Tubes |
| 347 Stainless Steel Polished Tubes | SS 347 Polished Tubes |
| Stainless Steel 347 Cold Drawn Tubes | 347 SS Cold Drawn Tubes |
| 347 SS Hot Rolled Tubes | Stainless Steel 347 Hot Rolled Tubes |
| SS 347 Cold Rolled Tubes | 347 Stainless Steel Cold Rolled Tubes |
| Stainless Steel 347 Square Tubes | 347 SS Round Tubes |
| 347 SS Hexagonal Tubes | Stainless Steel 347 Tubes |
Stainless Steel 347 Tubes also known as
SS 347 Tubes Stockist, SS 347 High-Pressure Tube, AISI / JIS ASTM A249 SS 347 Round Tubes, Stainless Steel 347 Square Tube, ASME SA213 347 SS Rectangular Tubes, SS 347 Oval Tubes, Stainless Steel 347 Electropolished Tubes Exporter in India, ASME SA249 SS 347 Cold Rolled Tubes Exporter, Trader, 347 SS Decorative Tube, ASTM A213 SS 347 ERW Tube, SS 347 EFW Tubing, SS TP347 Seamless Tubing, TP 347 Stainless Steel Cold Drawn Tubes, Stainless Steel 347 Heat Exchanger Tubing Trader
Stainless Steel 347 Tubes Price List
Leoscor Alloys is one of the most competitive suppliers of pipes and tubes from India. Our prices for SS 347 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 347 Stainless Steel Seamless and Welded Tubes.
347 Stainless Steel Welded 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 SS 347 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 347 Tubes.
- 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 347 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
