At Solitaire Fittings, we are a leading Stainless Steel 347 Buttweld Fittings Manufacturer & Supplier, providing premium quality fittings for critical industrial applications. Our range includes SS 347 Elbow, UNS S34700 Pipe Elbow, ASME SA403 SS 347 Pipe Bend, ANSI B16.9 SS 347H Pipe Cap, reducers, tees, and more.
As one of the trusted Stainless Steel ASTM A403 WP347 Pipe Fittings suppliers, we ensure our products meet international quality standards such as ASTM A403 and ASME SA403. Designed to withstand high temperatures, oxidation, and corrosive environments, our ASTM A403 WP 347 Stainless Steel Buttweld Fittings are widely used in industries like petrochemicals, oil & gas, power generation, heat exchangers, and chemical processing.
What are Stainless Steel 347 Buttweld Fittings?
Stainless Steel 347 Buttweld Fittings are made from stabilized austenitic stainless steel alloyed with niobium (columbium). This stabilization prevents carbide precipitation during high-temperature exposure, making them suitable for services up to 870°C (1600°F).
They are primarily used in applications requiring:
- Excellent resistance to intergranular corrosion
- Good creep strength
- Durability under high stress and pressure
- Superior weldability and formability
Our WP347 Buttweld Fittings suppliers ensure availability in various shapes such as elbows, reducers, caps, bends, and tees to suit different piping requirements.
Features of Stainless Steel 347 Buttweld Fittings
- High-temperature resistance – Ideal for use in boilers, heat exchangers, and furnace parts.
- Corrosion resistance – Excellent protection against oxidation and corrosive chemicals.
- Stabilized with niobium – Prevents carbide precipitation during welding and heating.
- Long service life – Durable and low-maintenance under harsh conditions.
- Conforms to standards – Manufactured as per ASTM A403 / ASME SA403 / ANSI B16.9.
Types of Stainless Steel 347 Buttweld Fittings
As a trusted Stainless Steel 347 Pipe Fittings Manufacturer, Solitaire Fittings supplies all standard types of fittings, including:
- SS 347 Elbow (90° & 45°) – Redirects fluid flow in piping systems.
- UNS S34700 Pipe Elbow – Designed for high-pressure and corrosive service.
- ASME SA403 SS 347 Pipe Bend – Provides smooth directional changes.
- ANSI B16.9 SS 347H Pipe Cap – Protects pipe ends and ensures safe closure.
- Stainless Steel 347 Reducers (Concentric & Eccentric) – Adjust pipe diameters for flow optimization.
- Stainless Steel 347 Tee (Equal & Unequal) – Distributes flow in different directions.
- Stainless Steel 347 Stub End – Used with lap joint flanges for easy disassembly.
- Stainless Steel 347 Cross – Connects four pipes together.
Applications of Stainless Steel 347 Buttweld Fittings
Our ASTM A403 WP 347 Stainless Steel Buttweld Fittings are widely used in:
- Oil & Gas pipelines
- Petrochemical processing units
- Heat exchangers & condensers
- High-temperature furnace parts
- Food processing & pharmaceutical industries
- Power generation plants
- Chemical industry equipment
Schedule and Size Chart for ASTM A403 WP 347 Stainless Steel Buttweld Fittings
| Nominal Pipe Size (NPS) | Outside Diameter (OD) (mm) | Schedule 10S | Schedule 40S | Schedule 80S |
|---|---|---|---|---|
| ½” | 21.3 | 2.11 | 2.77 | 3.73 |
| 1” | 33.4 | 2.77 | 3.38 | 4.55 |
| 2” | 60.3 | 2.77 | 3.91 | 5.54 |
| 4” | 114.3 | 3.05 | 6.02 | 8.56 |
| 6” | 168.3 | 3.40 | 7.11 | 10.97 |
| 10” | 273.1 | 3.40 | 9.27 | 12.70 |
| 16” | 406.4 | 4.78 | 11.13 | 17.45 |
Mechanical Properties of Stainless Steel 347 Buttweld Fittings
| Property | Value |
|---|---|
| Tensile Strength (Mpa) | 515 min |
| Yield Strength (MPa) | 215 min |
| Elongation (%) | 40% |
| Hardness (Brinell) | 217 max |
Chemical Composition – Stainless Steel 347 Buttweld Fittings
| Element | Content % |
|---|---|
| Carbon (C) | 0.08 max |
| Manganese (Mn) | 2.00 max |
| Phosphorus (P) | 0.045 max |
| Sulfur (S) | 0.030 max |
| Silicon (Si) | 1.00 max |
| Chromium (Cr) | 17.0 – 19.0 |
| Nickel (Ni) | 9.0 – 13.0 |
| Niobium (Cb + Ta) | 10 x C min, 1.0 max |
Physical Properties – Stainless Steel UNS S34700 Pipe Elbow,
| Property | Value |
|---|---|
| Density | 7.9 g/cm³ |
| Melting Point | 1398 – 1446 °C |
| Specific Heat Capacity | 500 J/kg·K |
| Thermal Conductivity | 16.2 W/m·K (at 100 °C) |
| Electrical Resistivity | 72 μΩ·cm (at 20 °C) |
Specifications of Stainless Steel ASTM A403 WP347 Pipe Fittings
| Standard | ASTM A403 / ASME SA403 / ANSI B16.9 |
|---|---|
| Grade | Stainless Steel 347 / 347H (UNS S34700 / S34709) |
| Size | ½” NB to 48” NB |
| Type | Seamless, Welded, Fabricated |
| Thickness | Sch 10S, Sch 40S, Sch 80S, Sch 160, XXS |
| Form | Elbow, Tee, Reducer, Cap, Bend, Stub End, Cross |
Why Choose Solitaire Fittings for Stainless Steel 347 Buttweld Fittings?
- Trusted Manufacturer & Supplier – Years of experience in supplying high-grade SS fittings.
- Global Exporter – Recognized ASME SA403 SS 347 Pipe Bend Exporter across more than 70 countries.
- Quality Assurance – Strict testing and inspection as per ASTM / ASME standards.
- Custom Solutions – Tailor-made fittings as per client drawings and project needs.
- Competitive Pricing – Affordable without compromising quality.
Stainless Steel 347 Buttweld Fittings Manufacturer & Supplier in India
As one of the leading Stainless Steel 347 Buttweld Fittings Manufacturer & Supplier in India, Solitaire Fittings ensures fast delivery, reliable service, and superior quality. Our fittings are exported worldwide, making us one of the most reliable WP347 Buttweld Fittings suppliers globally.
Whether you need SS 347 Elbow, UNS S34700 Pipe Elbow, ANSI B16.9 SS 347H Pipe Cap, or custom-made fittings, Solitaire Fittings is your trusted partner.
Request Your Stainless Steel 347 Buttweld Fittings Quote Today!
