Supplier of ASTM A403 Grade WP 304 Stainless Steel Pipe Fittings
Stainless steel pipes and tubes play an essential role in numerous industrial and domestic applications. Among the various grades available, ASTM A403 Grade WP 304 Stainless Steel Pipe Fittings stand out for their exceptional performance, durability, and versatility.
These fittings, including 90° elbows, are engineered to deliver high tensile strength, superior corrosion resistance, and a smooth, flawless finish. The DIN 1.4301 / AISI 304 Long Radius Elbow, in particular, is widely used in applications requiring reliable weldability and strong mechanical performance. With its reduced carbon content and robust resistance to oxidation, this alloy performs well even in demanding environments such as chemical processing, power generation, and gas systems.
Overview of Stainless Steel 304 Pipe Fittings
Our range of Stainless Steel 304 Pipe Fittings includes various types such as elbows, tees, reducers, bends, caps, and stub ends, each designed for specific flow and connection requirements.
These fittings exhibit:
Excellent ductility
Forming and drawing capabilities
Resistance to corrosion, chemicals, and high temperatures (up to 889°C)
Attractive surface finish and weldability
The alloy used, UNS S30400, is one of the most adaptable and widely used stainless steels in the world — ideal for both industrial and decorative applications.
Common uses include auto trims, kitchenware, hose clamps, enclosures, and wheel covers.
Types of ASTM A403 WP 304 Fittings Available
90° & 45° Elbows (Short and Long Radius)
Tees (Equal and Reducing)
Reducers (Concentric and Eccentric)
Pipe Caps and End Caps
180° Return Bends
Socket Weld and Threaded Fittings
Crosses and Stub Ends
Each fitting type serves a unique function, such as:
Elbows for changing the direction of flow.
Tees for connecting three pipes for distribution or mixing.
Reducers for connecting pipes of different diameters.
End Caps to terminate or close pipe ends safely.
Technical Specifications
| Specifications | Details |
|---|---|
| Standard | ASTM A403 / ASME SA403 |
| Dimensions | MSS-SP-43, ASME/ANSI B16.9, ASME B16.28, BS4504, BS1560 |
| Thickness | SCH 10 to SCH 160, STD, XS, XXS |
| Size Range | Seamless: ½” to 10″, Welded: ½” to 48″ |
| Manufacturing Process | Cast, Forge, Push, Press |
| Connection Type | Welding |
| Bending Radius | 1D, 2D, 3D, 5D, 6D, 8D, 10D |
| Certification | EN 10204/3.1B, NACE MR 01-75 |
| Origin | Indian, Japanese, Korean, European, USA, Russian mills |
Chemical Composition of Stainless Steel 304
| Element | C | Mn | Si | P | S | Cr | Ni | N |
|---|---|---|---|---|---|---|---|---|
| Minimum | – | – | – | – | – | 18.0 | 8.0 | – |
| Maximum | 0.08 | 2.0 | 0.75 | 0.045 | 0.030 | 20.0 | 10.5 | 0.10 |
Mechanical Properties
| Property | Value |
|---|---|
| Tensile Strength | 515 MPa (min) |
| Yield Strength (0.2% Proof) | 205 MPa (min) |
| Elongation (in 50mm) | 40% (min) |
| Hardness (Rockwell B) | 92 (max) |
| Hardness (Brinell) | 201 (max) |
Equivalent Material Grades
| Standard | Grade |
|---|---|
| UNS | S30400 |
| BS | 304S31 / 58E |
| EN | 1.4301 (X5CrNi18-10) |
| JIS | SUS 304 |
| Swedish SS | 2332 |
Physical Properties
| Property | Value |
|---|---|
| Density | 8000 kg/m³ |
| Elastic Modulus | 193 GPa |
| Thermal Expansion (0–100°C) | 17.2 µm/m°C |
| Thermal Conductivity | 16.2 W/m·K |
| Specific Heat (0–100°C) | 500 J/kg·K |
| Electrical Resistivity | 720 nΩ·m |
Applications
Stainless Steel 304 fittings are used extensively in industries such as:
Oil and Gas Processing
Chemical and Petrochemical
Food and Beverage
Pharmaceutical
Power Generation
Water Treatment
Architectural Structures
Common Dimensions and Tolerances
We supply fittings as per ASME B16.9 standards, ensuring precise dimensional accuracy and mechanical performance.
Available in nominal sizes from ½” NB to 48” NB, our fittings are manufactured with strict tolerance controls for wall thickness, ovality, angularity, and alignment.
Why Choose Us
As a leading supplier and stockist of ASTM A403 WP 304 Stainless Steel Fittings, we offer:
A wide inventory covering all sizes and types
Competitive pricing and timely delivery
Third-party inspection reports and full traceability certificates
Customization options for special dimensions or finishes
Our products are trusted globally by wholesalers, fabricators, distributors, and EPC contractors for quality and reliability.
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Explore moreFAQs - Stainless Steel 304 Pipe Fittings
Stainless Steel 304 Pipe Fittings are components used to connect, redirect, or terminate piping systems. Made from SS 304, they offer excellent corrosion resistance, durability, and strength, making them ideal for various industrial applications.
Common types include:
Elbows (90°, 45°)
Tees
Reducers
Caps
Couplings
Crosses
They are manufactured as per standards like ASTM A403, ASME B16.9, MSS-SP-43, and EN 10253, ensuring quality and reliability in piping systems.
Widely used in oil & gas, chemical, petrochemical, food & beverage, pharmaceutical, water treatment, and marine industries due to their high resistance to corrosion and ability to withstand high pressure.
Sizes range from ½ inch to 48 inches, and schedules include SCH 10s, SCH 40s, SCH 80s, SCH 160, XXS, with custom sizes available on request.
SS 304L has lower carbon content than SS 304, making it ideal for welding applications, minimizing the risk of carbide precipitation and intergranular corrosion.SS 304L has lower carbon content than SS 304, making it ideal for welding applications, minimizing the risk of carbide precipitation and intergranular corrosion.
SS 304 contains chromium and nickel, providing excellent resistance to oxidation and corrosion, particularly in environments exposed to water, air, and mild chemicals.
Yes, SS 304 fittings can be easily welded using standard welding techniques, making them suitable for custom piping systems.
Routine cleaning with mild detergents, avoiding harsh chemicals, and regular inspections can help maintain long-term performance and prevent corrosion.
SS 304 offers a perfect balance of strength, corrosion resistance, and cost-effectiveness, making it the preferred choice for industrial, commercial, and residential piping systems.