SS 304 Elbow – Seamless & Welded Elbow Manufacturer in India | AstroForge Fitting Industries
AstroForge Fitting Industries is one of the most reliable and trusted manufacturers, exporters, and suppliers of Stainless Steel 304 Elbows in India.
We manufacture and stock SS 304 Seamless Elbows and SS 304 Welded Elbows that are engineered for long service life, excellent corrosion resistance, and high performance under pressure and temperature variations.
Also known as 18/8 Stainless Steel or UNS S30400, SS 304 is an austenitic stainless steel containing approximately 18% chromium and 8% nickel, offering superior strength and oxidation resistance.
Our elbows are available in both Long Radius (LR) and Short Radius (SR) designs with angles of 45°, 90°, and 180° to suit diverse piping requirements.
Manufacturing Range & Standards
Our manufacturing covers a wide range of elbow types including:
SS 304 Seamless Elbow
SS 304 Welded Elbow
SS 304 Long Radius Elbow
SS 304 Short Radius Elbow
SS 304 45° / 90° / 180° Elbows
Manufacturing Standards:
ASTM A403 / ASME SA403 (WP304 / WP304L / WP304H)
ASME B16.9 / ASME B16.28
MSS-SP-43 / DIN 2605 / JIS B2311 / BS 1640
Production Range of SS 304 Seamless & Welded Elbows
| Type | Size Range | Wall Thickness | Radius Type | Angle Options |
|---|---|---|---|---|
| Seamless Elbow | ½” NB – 24” NB | SCH 10s to XXS | LR / SR | 45°, 90°, 180° |
| Welded Elbow | ½” NB – 48” NB | SCH 10s to XXS | LR / SR | 45°, 90°, 180° |
Custom elbows can also be produced as per customer drawings, dimensions, and design codes.
What is an SS 304 Elbow?
A pipe elbow is a key component used to change the direction of flow between two connecting pipes.
SS 304 Pipe Elbows are manufactured by hot forming, mandrel bending, or welding processes and are suitable for use in various temperature and pressure conditions.
They are widely used in chemical plants, refineries, shipbuilding, food processing, water treatment systems, and pharmaceutical industries.
SS 304 Elbows are known for their excellent corrosion resistance, formability, and strength, making them ideal for piping systems where hygiene and durability are essential.
Types of SS 304 Elbows
| Type | Description |
|---|---|
| Long Radius | The center-to-end dimension is 1.5 times the nominal pipe size, offering smooth flow with minimal pressure drop. |
| Short Radius | The center-to-end dimension equals the pipe size, ideal for compact spaces where installation area is limited. |
| Seamless Elbow | Manufactured from a single piece of seamless pipe for high pressure and temperature applications. |
| Welded Elbow | Fabricated by welding stainless steel plates or pipes; cost-effective for large sizes. |
Chemical Composition of SS 304 Elbow (ASTM A403 WP304)
| Element | Composition (%) |
|---|---|
| Carbon (C) | ≤ 0.08 |
| Manganese (Mn) | ≤ 2.00 |
| Silicon (Si) | ≤ 1.00 |
| Chromium (Cr) | 18.00 – 20.00 |
| Nickel (Ni) | 8.00 – 10.50 |
| Phosphorus (P) | ≤ 0.045 |
| Sulfur (S) | ≤ 0.030 |
| Nitrogen (N) | ≤ 0.10 |
| Iron (Fe) | Balance |
Mechanical Properties of SS 304 Elbow
| Property | Metric | Imperial |
|---|---|---|
| Tensile Strength | 515 MPa | 75,000 psi |
| Yield Strength (0.2% offset) | 205 MPa | 30,000 psi |
| Elongation | 40% min | — |
| Hardness (Brinell) | ≤ 201 HB | — |
| Density | 8.0 g/cm³ | — |
Heat Resistance of SS 304 Elbow
Good oxidation resistance in intermittent service up to 870°C and continuous service up to 925°C.
Prolonged exposure between 425°C – 860°C may lead to carbide precipitation.
For maximum corrosion resistance after exposure, annealing at 1050°C followed by rapid quenching is recommended.
Welding & Fabrication
SS 304 can be easily welded by TIG, MIG, Arc, or Resistance welding methods using all standard fusion techniques — both with and without filler metals.
It offers excellent formability, machinability, and post-weld strength for industrial use.
Surface Finish Options
Mill Finish (Black)
Pickled & Passivated
Sand Blasted / Shot Blasted
Electropolished (Mirror Finish)
Applications of SS 304 Elbows
Oil & Gas Transmission Lines
Petrochemical & Refinery Units
Food & Beverage Processing
Marine & Offshore Piping
Power Generation Systems
Water Supply & Wastewater Treatment
Chemical & Fertilizer Plants
Pulp & Paper Industry
Testing & Inspection
Every SS 304 Seamless and Welded Elbow manufactured by AstroForge Fitting Industries undergoes rigorous quality testing, including:
Hydrostatic & Pneumatic Tests
Visual & Dimensional Inspection
Ultrasonic & Radiography Tests
PMI (Positive Material Identification)
Mechanical & Chemical Analysis
Intergranular Corrosion Test (IGC)
Third-Party Inspection (TPI) on request
Certificates & Compliance
EN 10204/3.1B Mill Test Certificates
ISO 9001:2015 Quality Management Certified
IBR & PED Approved (on request)
100% Heat Number Traceability
Packaging & Delivery
To ensure safe transport and easy identification:
Elbows are wrapped with polyethylene sheets or bubble wrap
Ends are protected with plastic caps
Products are packed in wooden cases or pallets
Each package is marked with Grade, Size, Heat Number, and Country of Origin
Why Choose AstroForge Fitting Industries?
Decades of experience in stainless steel fittings manufacturing
Strict quality control & in-house testing facilities
Ready stock of standard sizes for immediate dispatch
Global export network with timely delivery
Custom manufacturing based on client drawings
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Explore moreFAQs - SS 304/304L Elbows & Bends
SS 304 and SS 304L forged flanges are stainless steel connecting components used to join pipes, valves, or equipment. They are made from ASTM A182 grade 304 or 304L materials, known for their corrosion resistance, high strength, and excellent weldability.
The main difference lies in carbon content — SS 304 contains up to 0.08% carbon, while SS 304L (Low Carbon) has a maximum of 0.035%. This makes SS 304L more suitable for welding applications as it minimizes carbide precipitation and improves corrosion resistance after welding.
AstroForge manufactures all major types including Weld Neck, Slip On, Blind, Socket Weld, Threaded, Lap Joint, and Ring Type Joint (RTJ) flanges. Custom flanges are also available based on drawings and project requirements.
Our Stainless Steel 304/304L Flanges are available in Class 150, 300, 600, 900, 1500, and 2500 pressure ratings as per ASME B16.5 and B16.47 standards.
Yes. SS 304 can resist oxidation up to 870°C in intermittent service and 925°C in continuous service. For superior resistance to intergranular corrosion after welding, SS 304L is recommended.
All flanges undergo dimensional inspection, hydrostatic testing, ultrasonic/radiography testing, chemical and mechanical analysis, PMI, and intergranular corrosion (IGC) tests. We also provide EN 10204/3.1B Mill Test Certificates for full traceability.
Absolutely. AstroForge Fitting Industries offers custom manufacturing as per client drawings, dimensions, and specifications for both domestic and export orders.
We supply flanges with machined finish, mirror polish, pickled and passivated, or shot-blasted surfaces, depending on the end-use application and customer requirement.
Each flange is protected with plastic caps, wrapped in bubble sheets or HDPE covers, and packed in fumigated wooden crates. All items are marked with grade, size, pressure rating, heat number, and country of origin.
AstroForge is an ISO 9001:2015 certified manufacturer with modern forging and testing facilities. We ensure high-quality materials, competitive pricing, and prompt delivery to more than 40 countries, making us a trusted partner in the piping industry.