Why EPC & Refinery Buyers Choose Ganpat Industrial For SS 347 Pipe Fittings ?
Niobium Stabilised Heats
Cb+Ta stabilisation resists carbide precipitation above 800°F — mill-certified every batch
One Enquiry, Full Range
Elbow • Tee • Reducer • Cap • Stub End — all in one PO
EIL & IBR Approved
ISO 9001 • PED • NACE MR0175 heats on request
Zero Inspection Surprises
PMI • RT • hydro test — before it ships
Quote In 24 Hours
Ready stock on standard sizes — ships same week
347 Stainless Steel Pipe Fittings Highlights
- 1Type: Elbow, Tee, Reducer, Pipe Cap, Stub End, Collar, Cross, Lap Joint Stub Ends, Pipe Bend
- 2Size Range: 1/2″ (NB 15) to 24″ (NB 600) • Custom up to 48″
- 3Common Grades: UNS S34700, WNr 1.4550, ASTM A403 WP347, AISI 347
- 4Standards: ASTM A403, ASME B16.9, ASME B16.11, MSS SP-43, ASME B36.19
- 5Schedule: SCH 5S, 10S, 20S, 40S, 80S, 160, XXS • Seamless & Welded
- 6Finish: Solution Annealed & Pickled, Bright Annealed, Buffed
Or call our Mumbai office: +91 22 6743 7134 • Fast dispatch on ready stock sizes
Stainless Steel 347 Fittings are fabricated using a niobium and tantalum stabilized composition the only addition that ensures the stainless steel does not suffer from chromium carbide sensitization between 800 and 1500 degrees Fahrenheit, the range within which unstabilized 304 Fittings become brittle around the weld line. All UNS S34700 / ASTM A403 WP347 Fittings manufactured by Ganpat Industrial are forged in our own foundry and supplied to customers in India, UAE and the Middle East.
Mumbai · Stainless Steel 347 Pipe Fittings Manufacturer India
347 Grade Fittings Built To Survive Heat Cycling, Not Just Meet Spec
Ganpat Industrial forges and supplies UNS S34700 / ASTM A403 WP347 Pipe Fittings for buyers who cannot risk intergranular corrosion after welding refinery furnace lines, power boiler piping, aircraft exhaust systems and high-temperature process skids across India, the UAE and the Middle East.
- ✓ISO 9001:2015
- ✓ISO 14001:2015
- ✓OHSAS 18001:2007
- ✓PED Certified
- ✓EIL & IBR Approved
ASTM A403 WP347 Elbow Manufacturer in India With Sch 10 To Sch 160 At Best Price
SS 347 Pipe Fittings Specification
AISI 347 Reducer Material
- UNS S34700
- WNr 1.4550
- AISI 347
- ASTM A403 Gr WP347
WNR 1.4550 Pipe Cap Size Range
- NB 15 (1/2″) – NB 600 (24″)
- Wall: SCH 5S – XXS
- Seamless & Welded (EFW)
- Custom sizes on drawing
SS 347 Collar Testing
- PMI Testing
- Radiography (RT)
- Hydrostatic Test
- Third-Party Inspection
INOX 347 Pipe Bend Finish
- Solution Annealed & Pickled
- Bright Annealed
- Buffed / Polished
- Natural Mill Finish
ASTM A403 WP347 Pipe Cap Documentation
- Mill Test Certificate 3.1
- NABL Lab Report
- Packing List
- Certificate Of Origin
SUS 347 Tee Origin
- Indian Origin
- European Origin
- Heat-Number Traceable
- EIL / IBR Approved Sources
ASTM A403 Gr WP347 Pipe Fittings Schedule Chart
| Nominal Pipe Size | Schedule 10S | Schedule 80S | Schedule 40S | ||||||
|---|---|---|---|---|---|---|---|---|---|
| Elbow 45 Deg | B16.9 Equal Tee | Elbow 90 Deg | B16.9 Equal Tee | Elbow 90 Deg | Elbow 45 Deg | B16.9 Equal Tee | Elbow 90 Deg | Elbow 45 Deg | |
| 15 | 0.03 | 0.09 | 0.06 | 0.14 | 0.10 | 0.05 | 0.10 | 0.08 | 0.04 |
| 8 | 0.01 | 0.03 | 0.02 | 0.07 | 0.04 | 0.03 | 0.06 | 0.03 | 0.02 |
| 150 | 2.72 | 8.07 | 5.45 | 13.61 | 16.32 | 8.16 | 10.99 | 10.89 | 5.44 |
| 90 | 0.75 | 2.67 | 1.70 | 5.44 | 4.00 | 2.00 | 4.08 | 2.83 | 1.42 |
| 20 | 0.03 | 0.13 | 0.07 | 0.20 | 0.11 | 0.05 | 0.17 | 0.08 | 0.04 |
| 10 | 0.02 | 0.05 | 0.03 | 0.09 | 0.06 | 0.04 | 0.03 | 0.03 | 0.02 |
| 50 | 0.25 | 0.85 | 0.50 | 1.59 | 0.91 | 0.59 | 1.28 | 0.70 | 0.4 |
| 32 | 0.11 | 0.49 | 0.23 | 0.68 | 0.40 | 0.23 | 0.59 | 0.26 | 0.17 |
| 100 | 1.08 | 3.46 | 2.10 | 7.71 | 6.18 | 2.81 | 5.27 | 4.47 | 2.09 |
| 80 | 0.63 | 1.77 | 1.25 | 4.45 | 2.97 | 1.50 | 3.31 | 2.20 | 1.08 |
| 40 | 0.17 | 0.68 | 0.30 | 1.02 | 0.51 | 0.29 | 0.86 | 0.40 | 0.23 |
| 200 | 5.33 | 15.65 | 10.20 | 28.12 | 33.11 | 16.56 | 20.91 | 21.54 | 10.77 |
| 25 | 0.08 | 0.28 | 0.14 | 0.38 | 0.22 | 0.14 | 0.29 | 0.15 | 0.11 |
| 250 | 9.75 | 26.46 | 18.15 | 49.90 | 51.71 | 25.86 | 35.38 | 38.56 | 19.27 |
| 300 | 13.62 | 39.46 | 25.80 | 83.91 | 79.38 | 39.69 | 62.14 | 59.42 | 29.71 |
| 65 | 0.48 | 1.41 | 0.85 | 3.13 | 1.81 | 0.99 | 2.19 | 1.40 | 0.77 |
Produce SS 347 Tee and Reducer With Size Range 1/2 to 10″ (seamless) and 1/2 to 48″ (welded)
UNS S34700 Elbow Size Chart
| Nominal Diameter | Equivalent Decimal | Inside / Outside Diameter | Typical Threads In Inch |
|---|---|---|---|
| 1-1/2″ | 1.900 | 1-29/32 | 11-1/2 |
| 1/16″ | 0.313 | 5/16 | 27 |
| 2-1/2″ | 2.875 | 2-7/8 | 8 |
| 1/4″ | 0.540 | 35/64 | 18 |
| 3/8″ | 0.675 | 43/64 | 18 |
| 1/8″ | 0.405 | 13/32 | 27 |
| 1-1/4″ | 1.660 | 1-21/32 | 11-1/2 |
| 3/4″ | 1.050 | 1-3/64 | 14 |
| 3″ | 3.500 | 3-1/2 | 8 |
| 2″ | 2.375 | 2-3/8 | 11-1/2 |
| 3-1/2″ | 4.000 | 4 | 8 |
| 1″ | 1.315 | 1-5/16 | 11-1/2 |
| 4″ | 4.500 | 4-1/2 | 8 |
| 1/2″ | 0.840 | 27/32 | 14 |
Types Of ASTM A403 WP347 Pipe Fittings
SS 347 Elbow
ASME B16.9
UNS S34700 Tee
ASME B16.9
WNR 1.4550 Reducer
Conc. / Ecc.
ASTM A403 WP347 Pipe Cap
ASME B16.9
347 SS Stub End
MSS SP-43
INOX 347 Collar
Custom Drawing
SUS 347 Cross
ASME B16.9
347 Stainless Steel Pipe Bend
3D / 5D
Need Mill-Certified 347 Elbows & Tees On Short Notice?Share size & quantity — get factory price with MTC 3.1 in 24 hours.
WNR 1.4550 Tee Weight Chart
| NPS Of ASTM A403 WP347 Tee | Weight In (KG) Kilogram | Weight In LBS |
|---|---|---|
| 3/4 | 0.2 | 0.45 |
| 1/2 | 0.16 | 0.35 |
| 1.1/4 | 0.59 | 1.3 |
| 1 | 0.34 | 0.75 |
| 2 | 1.59 | 3.5 |
| 1.1/2 | 0.91 | 2 |
| 3 | 3.18 | 7 |
| 2.1/2 | 2.72 | 6 |
| 4 | 5.44 | 12 |
| 3.1/2 | 4.08 | 9 |
| 6 | 15.42 | 34 |
| 5 | 9.53 | 21 |
| 10 | 38.56 | 85 |
| 8 | 24.95 | 55 |
| 14 | 74.84 | 165 |
| 12 | 54.43 | 120 |
| 18 | 112.94 | 249 |
| 16 | 88.45 | 195 |
| 22 | 187.79 | 414 |
| 20 | 155.13 | 342 |
| 26 | 349.27 | 770 |
| 24 | 239.5 | 528 |
| 36 | 675.85 | 1490 |
| 30 | 480.81 | 1060 |
What Actually Moves The Price
SS 347 Pipe Fittings PriceQuoted per kg or per piece, factory-direct, no trader markup.
Application Of SUS 347 Lap Joint Stub Ends
We are a trusted Stainless Steel 347 Pipe Fittings Supplier in India, serving refinery, power and high-temperature process industries.
Petrochemical & Refinery Piping
High-Temperature Furnace Systems
Aircraft Exhaust & Manifold Lines
Boiler & Superheater Piping
Heat Exchanger & Vessel Fabrication
Pulp & Paper Processing Plants
Power Generation Piping
Pharma & Food Processing Skids
AISI 347 Pipe Bend Pressure Rating
We are a leading Stainless Steel 347 Pipe Fittings Manufacturer in India, delivering fittings rated for reliable high-pressure, high-temperature service.
| Temperature Ratings | Pressure Class | ||||
|---|---|---|---|---|---|
| 150 | 300 | ||||
| 2 1/2 – 3 inch. | 1 1/4 – 2 inch. | 1/4 – 1 inch. | |||
| (°F) | (°C) | ||||
| 200 | 93 | 265 | 910 | 1350 | 1785 |
| 450 | 232 | – | 475 | 600 | 725 |
| 400 | 204 | – | 560 | 750 | 935 |
| 300 | 149 | 185 | 735 | 1050 | 1360 |
| -20 to 150 | -29 to 66 | 300 | 1000 | 1500 | 2000 |
| 250 | 121 | 225 | 825 | 1200 | 1575 |
| 500 | 260 | – | 385 | 450 | 510 |
| 550 | 288 | – | 300 | 300 | 300 |
| 350 | 177 | 150 | 650 | 900 | 1150 |
Stainless Steel 347 Pipe Fittings Delivered Weekly to the Following Countries
| Export to | Countries | Continent | Ports | Shipping time |
|---|---|---|---|---|
| Argentina | South America | Bahía Blanca | 45 | |
| Bahrain | Asia | Mina Salman | 9 | |
| Colombia | South America | Cartagena | 45 |
Monthly Delivery of ASTM A403 WP347 Elbow to Below Countries
| Export to | Countries | Continent | Ports | Shipping time |
|---|---|---|---|---|
| Nigeria | Africa | Calabar | 30 | |
| Netherlands | Europe | Moerdijk | 30 |
Chemical Composition Of UNS S34700 Pipe Cap
We are a trusted Stainless Steel 347 Pipe Fittings Supplier in India, maintaining precise chemical composition for every heat as per ASTM A403
ChromiumCr
17.00–19.00%
NickelNi
9.00–12.00%
ManganeseMn
≤ 2.00%
Niobium + TantalumCb+Ta
10×C–1.10%
CarbonC
≤ 0.08%
IronFe
Balance
Mechanical Properties Of INOX 347 Cross
Tensile Strength
515 MPa Min
ASTM A403 WP347
Yield Strength
205 MPa Min
0.2% Proof Stress
Hardness
≤ 201 HB
92 HRB Max
Elongation
35% Min
In 50 mm Gauge
Buying In Bulk For A Refinery Or Power Project?Send your BOQ — factory price, MTC 3.1, dispatch same week.
ASTM A403 WP347 Pipe Bend Material Equivalent
American Standard
- UNS S34700
- ASTM A403 Grade WP347
- ASME B16.9 / B16.11
European Standard
- WNr 1.4550
- EN 10216-5 / EN 10222-5
- DIN 17440 / DIN 17456
Japanese Standard
- SUS347
- JIS G3459
- JIS B2311 / B2312
AISI 347 Pipe Fittings HSN Code
HSN Code
7307.23
Buttweld Fittings Of Stainless Steel
GST Rate
18%
Applicable On Domestic Sale
Export Benefit
RoDTEP Eligible
Duty drawback available on export orders
Today’s SS 347 Pipe Fittings PriceNickel & niobium content, size, wall schedule and testing level decide the final rate — factory-direct, no trader markup.
SS 347 vs SS 321 Stainless Steel Pipe Fittings
SS 321 Pipe Fittings
- Stabiliser: Titanium (Ti)
- Stabiliser Ratio: Ti ≥ 5×C%
- Max Oxidation Temp: 871°C (1600°F)
- Sensitisation-Free Range: 427–816°C
- Nuclear Code Limit: 427°C (Sec. III)
- Relative Cost Index: 100
SS 347 Pipe Fittings
- Stabiliser: Niobium + Tantalum (Cb+Ta)
- Stabiliser Ratio: Nb+Ta = 10×C–1.10%
- Max Oxidation Temp: 900°C (1652°F)
- Sensitisation-Free Range: 427–816°C
- Nuclear Code Limit: Not Recommended
- Relative Cost Index: ≈ 108
What Is The Benefit Of Selecting WNR 1.4550 Pipe Cap?
No Post-Weld Sensitisation
Niobium carbides form ahead of chromium carbides, so welds stay corrosion-free
Higher Creep & Stress-Rupture Life
Outperforms 304 and 321 grade in sustained high-temperature service
Wider Temperature Window
Stable from cryogenic duty up to 1500°F without embrittlement
Single-Grade Standardisation
One material covers both ambient and hot-leg piping, fewer SKUs to stock
Lower Total Ownership Cost
Fewer weld failures and re-inspections over the piping system’s life
Widely Code-Approved
Accepted under ASME B31.1, ASME B31.3 and EIL / IBR piping specifications
How Are 347 SS Pipe Bend Manufactured?
Raw Material & MTC Check
Incoming UNS S34700 billet or plate verified against Mill Test Certificate 3.1
Forging / Hot Forming
Material hammered, pressed or extruded into the rough fitting shape
Precision Machining
Bore, ends and wall thickness machined to ASME B16.9 tolerance
Solution Annealing
Heated to 1040°C minimum and rapid water quenched to dissolve carbides
Pickling & Passivation
Acid-pickled to restore the chromium oxide film for corrosion resistance
Inspection & Packing
PMI, RT & dimensional check, then export-ready packing
Frequently Asked Questions
Why choose SS 347 Pipe Fittings over 304 or 316?
Niobium stabilisation stops carbide precipitation after welding, so 347 fittings resist intergranular corrosion at high temperature where 304 and 316 grades can fail
What is the maximum service temperature of 347 stainless steel fittings?
SS 347 fittings perform well up to about 1500°F (815°C), which is why they are common in furnace, boiler and exhaust piping
Is SS 347 magnetic?
SS 347 Pipe Fittings are essentially non-magnetic in the annealed condition
Can SS 347 Pipe Fittings be used in radioactive service?
Not recommended tantalum present in the alloy has a long half-life, so Type 321 is generally preferred for nuclear radioactive applications
We Collaborate With Traders in the Following Cities
| California (USA) | Texas (USA) |
| Abu Dhabi (UAE) | Dammam (Saudi Arabia) |
| Dubai (UAE) | Al Jubail (Saudi Arabia) |
| Indiana (USA) | Al Khobar (Saudi Arabia) |
| Houston (USA) | Riyadh (Saudi Arabia) |
6 Reasons to choose Ganpat Industrial Corporation
- Distributor of Heat Exchanger parts and Alloys for High Temperature applications.
- Stockholder and importer of Ferrous and non ferrous metals.
- Wide stock of prime quality austenitic and Ferritic Stainless Steel for Extreme pressure environment.
- Marine grade steel at lowest price in Mumbai.
- Compare Price per KG in India and China.
- Offer Resale price to local suppliers, traders and wholesalers in UAE, Saudi Arabia, Egypt, and USA