Stainless Steel 347 Pipes Manufacturer & Supplier in India
Stainless Steel 347 Pipes are niobium-stabilized austenitic stainless steel pipes designed for high-temperature and corrosion-resistant applications. Available in Stainless Steel 347 Seamless Pipe, SS 347 Welded Pipe, SS 347 ERW Pipe, ASTM A358 TP347 EFW Pipe, and structural pipe forms, they offer excellent resistance to intergranular corrosion, oxidation, and thermal cycling.
Stainless Steel 347 Pipe Manufacturer & Suppliers
We are a trusted Stainless Steel 347 Pipe Manufacturer and SS 347 Pipe Supplier in India, offering premium-quality pipes that meet international manufacturing and testing standards. Our product range includes Stainless Steel 347 Pipes, ASTM A312 TP347, ASME SA312 Grade 347, UNS S34700 Pipe, and Werkstoff Nr 1.4550 Pipe in seamless, welded, ERW, and EFW constructions.
Stainless Steel 347 is a niobium (columbium) stabilized austenitic stainless steel grade specifically developed to resist chromium carbide precipitation during welding and prolonged exposure to elevated temperatures. This makes it an ideal material for heat exchangers, boilers, pressure vessels, petrochemical plants, refineries, power generation facilities, food processing equipment, and chemical industries.
Whether your project requires INOX 347 Pipes, AISI 347 Pipes, or customized pipe dimensions, we supply products manufactured with strict quality control to ensure long service life and dependable performance.
What are Stainless Steel 347 Pipes?
Stainless Steel 347 Pipes are chromium-nickel stainless steel pipes stabilized with niobium to improve resistance against intergranular corrosion after welding. Compared to standard 304 stainless steel, Grade 347 performs better in high-temperature environments where repeated heating and cooling cycles occur.
Common specifications include:
- ASTM A312 TP347
- ASME SA312 Grade 347
- UNS S34700 Pipe
- Werkstoff Nr 1.4550 Pipe
- ASTM A358 TP347 EFW Pipe
These pipes maintain excellent mechanical strength and corrosion resistance even at temperatures exceeding 800°C, making them suitable for demanding industrial applications.
Features & Benefits of Stainless Steel 347 Pipes
Our Stainless Steel 347 Pipes offer numerous performance advantages, including:
- Excellent resistance to intergranular corrosion
- Outstanding oxidation resistance at elevated temperatures
- Superior weldability without post-weld heat treatment
- High creep and stress rupture strength
- Excellent mechanical strength
- Good formability and fabrication properties
- Long service life with low maintenance
- Reliable performance in corrosive environments
- Suitable for pressure and high-temperature applications
- Available in custom dimensions and schedules
Types of Stainless Steel 347 Pipes We Supply
We supply a complete range of Stainless Steel 347 Pipes to meet different industrial requirements.
Stainless Steel 347 Seamless Pipe
Manufactured without any weld seam, these pipes offer excellent pressure handling capability and superior mechanical strength for critical applications.
SS 347 Welded Pipe
Produced from high-quality stainless steel plates using advanced welding technology, welded pipes provide excellent dimensional accuracy and cost efficiency.
SS 347 ERW Pipe
SS 347 ERW Pipe is manufactured using electric resistance welding. It offers smooth internal surfaces, good strength, and is widely used in water, chemical, and structural applications.
ASME SA312 TP347 EFW Pipe
ASME SA312 TP347 EFW Pipe and ASTM A358 TP347 EFW Pipe are electric fusion welded pipes suitable for larger diameters and high-temperature industrial services.
Stainless Steel 347 Round Pipe
Round pipes are commonly used for fluid transportation, heat exchangers, pressure piping, and process equipment.
SS 347 Square Pipe
Square pipes provide high structural strength and are widely used in fabrication, construction, and industrial frameworks.
SS 347 Rectangular Pipe
Rectangular pipes offer excellent load-bearing capability and are commonly selected for structural engineering and architectural projects.
ASTM A312 TP347 Pipe Specifications
| Specification | Details |
| Grade | ASTM A312 TP347 |
| Equivalent Standard | ASME SA312 Grade 347 |
| UNS Number | UNS S34700 Pipe |
| Werkstoff Number | 1.4550 |
| Material Type | Austenitic Stainless Steel |
| Manufacturing | Seamless, Welded, ERW, EFW |
| Pipe Forms | Round, Square, Rectangular |
| Size Range | ½” NB to 48″ NB |
| Wall Thickness | SCH 5 to SCH XXS |
| Length | Single Random, Double Random, Custom |
Stainless Steel 347 Pipe Chemical Composition
The alloy contains balanced amounts of chromium, nickel, and niobium for improved corrosion resistance and high-temperature stability.
| Element | Percentage |
| Chromium | 17.0–19.0% |
| Nickel | 9.0–13.0% |
| Carbon | Max 0.08% |
| Manganese | Max 2.00% |
| Silicon | Max 1.00% |
| Niobium + Tantalum | 10 × Carbon (Min) |
| Phosphorus | Max 0.045% |
| Sulfur | Max 0.030% |
Mechanical Properties of SS 347 Pipes
| Property | Value |
| Tensile Strength | 515 MPa Minimum |
| Yield Strength | 205 MPa Minimum |
| Elongation | 35% Minimum |
| Hardness | Max 201 HB |
Stainless Steel 347 Pipe Weight Chart / SS 347 Pipe Dimensions
We supply pipes in a comprehensive range of dimensions to meet international project requirements.
| Nominal Pipe Size | Outside Diameter | Common Schedules |
| 1/2″ | 21.3 mm | Sch 10, 40, 80 |
| 1″ | 33.4 mm | Sch 10, 40, 80 |
| 2″ | 60.3 mm | Sch 10, 40, 80 |
| 4″ | 114.3 mm | Sch 10, 40, STD |
| 6″ | 168.3 mm | Sch 10, 40, 80 |
| 8″ | 219.1 mm | Sch 10, 40 |
A complete Stainless Steel 347 Pipe Weight Chart with theoretical weight, outside diameter, wall thickness, and dimensional tolerances is available upon request.
Applications of SS 347 Pipes
Due to their excellent heat and corrosion resistance, SS 347 Pipe products are widely used across various industries.
Typical applications include:
- Petrochemical plants
- Oil & Gas industries
- Refineries
- Chemical processing plants
- Heat exchangers
- Boilers
- Pressure vessels
- Fertilizer plants
- Power generation plants
- Pharmaceutical industries
- Food processing industries
- Pulp & Paper mills
- Marine engineering
- Offshore platforms
Related Stainless Steel Pipes Grades
- Stainless Steel 304 Pipe
- Stainless Steel 304l Pipe
- Stainless Steel 304H Pipe
- Stainless Steel 309H Pipe
- Stainless Steel 310 Pipe
- Stainless Steel 310S Pipe
- Stainless Steel 310H Pipe
- Stainless Steel 316 Pipe
- Stainless Steel 316L Pipe
- Stainless Steel 316H Pipe
- Stainless Steel 316TI Pipe
- Stainless Steel 317 Pipe
- Stainless Steel 317L Pipe
- Stainless Steel 321 Pipe
- Stainless Steel 321H Pipe
- Stainless Steel 347 Pipe
- Stainless Steel 347H Pipe
- Stainless Steel 410 Pipe
- Stainless Steel 446 Pipe
- Stainless Steel 904L Pipe
Why Choose Us as Your Stainless Steel 347 Pipe Manufacturer?
As an experienced Stainless Steel 347 Pipe Manufacturer, we focus on supplying products that consistently meet international quality standards.
Our advantages include:
- Large inventory for fast delivery
- Complete range of seamless, welded, ERW, and EFW pipes
- Third-party inspection available
- Material Test Certificates (EN 10204 3.1)
- Competitive pricing
- Global export capability
- Custom cutting and finishing services
- Secure packaging for international shipments
- Technical support for material selection
As a reliable SS 347 Pipe Supplier in India, we work closely with industries worldwide to deliver piping solutions that meet demanding project requirements.
Global Reach
ASC LLP boasts a robust global presence, committed to delivering unparalleled service and quality to clients around the world. Our dedication to prompt delivery and exceptional customer care sets us apart in the industry. Major corporations across the USA, Europe, Asia, and other regions place their trust in our high-quality stainless steel 347 pipes. This widespread trust underscores our reputation for reliability and excellence. By consistently meeting and exceeding the expectations of our international clientele, we continue to solidify our position as a leader in the global steel market.
