Socket Weld
Flanges Manufacturer
At Steel Icon Stainless Pvt. Ltd., we are a trusted manufacturer and exporter of stainless steel socket weld flanges, designed for high-pressure, high-temperature systems with small pipe diameters. Manufactured in compliance with ASTM, ASME, DIN, and EN standards, our socket weld flanges are known for their compact design, ease of welding, and strong sealing capability.
These flanges are ideal for high-integrity fluid systems in industries such as petrochemical, oil & gas, marine, pharmaceutical, and power generation.
What is a Socket Weld Flange?
A socket weld flange is a type of flange where the pipe is inserted into a recessed socket and then fillet welded around the outer edge. This design ensures smooth bore alignment, minimizes pressure drops, and enhances flow efficiency. Socket weld flanges are best suited for small-bore piping systems (typically under 2 inches) and provide high fatigue resistance in vibration-prone or high-pressure systems.
| Products |
|---|
|
Stainless Steel Bar |
|
Fasteners |
|
Forged Products |
|
Flanges |
|
Forged Fittings |
|
Stainless Steel Billets |
|
Round Corner Square Billets |
|
Stainless Steel Pipes |
|
Pipe Fittings |
|
Valve |
Socket Weld Flanges Specifications
| Property | Specification |
|---|---|
|
Material Grades |
SS 304, SS 316, SS 321, SS 347, SS 410, Duplex 2205 |
|
Sizes |
½” to 4” (DN 15 to DN 100)
|
|
Pressure Ratings |
Class 150, 300, 600, 900, 1500 |
|
Face Types |
RF (Raised Face), FF (Flat Face), RTJ (Ring Type Joint) |
|
Standard Compliance |
ASTM A182 / A240, ASME B16.5, EN 1092-1, DIN 2623 |
|
Manufacturing Process |
Forged / CNC Machined / Heat Treated |
|
Finish Options |
Machined, Pickled, Passivated, Anti-Rust Coated |
Stainless Steel Grades & Equivalent Standards
| Grade | UNS | EN / WNR |
|---|---|---|
|
SS 304 |
S30400 |
1.4301 / X5CrNi18-10 |
|
SS 316 |
S31600 |
1.4401 / X5CrNiMo17-12-2 |
|
SS 321 |
S32100 |
1.4541 / X6CrNiTi18-10 |
|
SS 410 |
S41000 |
1.4006 / X12Cr13 |
|
Duplex 2205
|
S31803 / S32205 |
1.4462 |
Chemical Composition (Typical – SS 304 / SS 316)
| Element | SS 304 (%) | SS 316 (%) |
|---|---|---|
|
Carbon (C) |
0.08 max |
0.08 max |
|
Manganese (Mn) |
2.00 max |
2.00 max |
|
Silicon (Si) |
1.00 max |
1.00 max |
|
Chromium (Cr) |
18.0 – 20.0 |
16.0 – 18.0 |
|
Nickel (Ni) |
8.0 – 10.5 |
10.0 – 14.0 |
|
Molybdenum (Mo) |
— |
2.00 – 3.00 |
Mechanical Properties
| Property | SS 304 / SS 316 |
|---|---|
|
Tensile Strength |
515 – 750 MPa |
|
Yield Strength |
205 – 310 MPa |
|
Elongation (%) |
≥ 40% |
|
Hardness (HRB) |
≤ 95 |
|
Working Temp Range |
-200°C to 870°C |
|
Pressure Handling |
Up to1500 |
Applications of Socket Weld Flanges
Socket weld flanges are used in small-diameter, high-pressure systems where leak-tight and vibration-resistant joints are essential:
- Oil & Gas Installations: Compact piping systems, manifolds, and flow control assemblies
- Petrochemical Plants: High-pressure processing lines with small bore diameters
- Marine & Offshore: Engine room piping, fuel supply systems, and compact pump lines
- Power Generation: Boiler feedwater, steam condensate, and auxiliary systems
- Chemical Industry: Corrosive, high-integrity fluid transfer and process lines
- Pharmaceutical & Food Plants: Sanitary and hygienic fluid control systems
Benefits of Socket Weld Flanges
- Ideal for small diameter, high-pressure systems
- Provides strong, leak-proof connections with excellent fatigue resistance
- Ensures accurate pipe alignment with minimal internal bore turbulence
- Reduces welding time compared to full butt-welded flanges
- Available in a variety of face finishes and material grades
- Durable in corrosive, thermal cycling, and vibration-heavy environments
Frequently Asked Questions
Explore our FAQs for insights on materials, customization, and delivery.
Why are socket weld flanges preferred for small-bore piping?
Socket weld flanges allow accurate pipe positioning and clean bore alignment, which reduces turbulence and improves flow in smaller diameter pipelines.
Can socket weld flanges handle high pressure?
Yes, they are designed to perform well in high-pressure systems up to Class 1500, especially when combined with proper welding techniques.
What’s the difference between socket weld and weld neck flanges?
Socket weld flanges are used for smaller pipes (below 2″) with a fillet weld, while weld neck flanges are used for larger, critical systems with a butt-weld for higher integrity.
Do you provide custom socket weld flange solutions?
Absolutely. We manufacture custom bore sizes, special face types, and provide test certificates and documentation as required.
GET IN TOUCH
Our factory’s complete control ensures top-notch quality, prices, and service, reflecting our pride in what we do.
Get the Best Flanges from India's Top Manufacturer
Looking for high-quality stainless steel bars?
People Also Search For
- SS 304 Socket Weld Flange Manufacturer
- Socket Weld Flanges for Small Diameter Pipes
- ANSI B16.5 SW Flange Supplier
- Duplex Socket Weld Flanges for Offshore Use
- RTJ Socket Weld Flanges Exporters India
- Stainless Steel Socket Flanges for Oil Refineries
- Slip-On Flanges with Raised Face Finish
2025 Steel Icon Stainless |
