Elbow
What is a Socket Weld Elbow?
A Socket Weld Elbow is a high-pressure pipe fitting used to change the direction of fluid flow in a piping system—typically by 90 degrees or 45 degrees. Designed for small-bore piping, these elbows have a socket or recessed area into which the pipe is inserted and welded externally for a strong, leak-proof joint.
Socket weld elbows are widely used in high-pressure, high-temperature environments, such as oil & gas processing, chemical plants, steam systems, and shipbuilding, where joint integrity and precision are crucial. They are commonly available in carbon steel, stainless steel, and alloy steel, and conform to ASME B16.11 and related global standards.
Key Features
- Precision Angle Turns – Available in 90° and 45° angles for directional flow changes.
- Reinforced Welding Socket – Enhances joint strength and eliminates leakage.
- Compact for Tight Spaces – Ideal for limited-area pipe layouts.
- High-Pressure Tolerance – Withstands Class 3000/6000/9000 ratings.
- Corrosion-Resistant Options – Offered in stainless steel and alloy grades for harsh environments.
Types of Socket Weld Elbows
- 90° Socket Weld Elbow
- 45° Socket Weld Elbow
- Reducing Elbow (Socket Weld)
- Street Elbow (Male-Female SW Ends)
Specifications
Mechanical Properties
Chemical Composition
Equivalent Grades
Weight Chart
Specifications
| Parameter | Details |
|---|---|
| Sizes | ½" to 4" (DN15 to DN100) |
| Angle Options | 45°, 90° |
| Pressure Classes | Class 3000 / 6000 / 9000 |
| Material Options | ASTM A105 (CS), A182 F304/316 (SS), Alloy Steel |
| Standards | ASME B16.11, MSS-SP-79, SP-83 |
| End Connection | Socket Weld (SW) |
| Property | Typical Value |
|---|---|
| Tensile Strength | 485 – 700 MPa |
| Yield Strength | 250 – 450 MPa |
| Elongation | 20% – 30% |
| Operating Temp Range | -46°C to +600°C |
| Element | Composition (%) |
|---|---|
| Carbon (C) | 0.08 – 0.35 |
| Manganese (Mn) | 0.60 – 1.65 |
| Silicon (Si) | 0.15 – 0.80 |
| Chromium (Cr) | 18.0 – 20.0 (SS Only) |
| Nickel (Ni) | 8.0 – 10.5 (SS Only) |
| Molybdenum (Mo) | 2.0 – 3.0 (For 316 Only) |
| Phosphorus (P) | ≤ 0.035 |
| Sulfur (S) | ≤ 0.040 |
| Iron (Fe) | Balance |
| Standard | Equivalent Grade |
|---|---|
| ASTM | A105, A182 F304/316, A350 LF2 |
| ASME | B16.11 |
| MSS-SP | SP-79, SP-83 |
| DIN | 2950, 2975 |
| Elbow Type | Size (inches) | Weight per 100 pcs (kg) |
|---|---|---|
| 90° Elbow | ½" | 8.50 |
| 90° Elbow | 1" | 12.00 |
| 45° Elbow | ¾" | 10.30 |
| Reducing Elbow | 1½" | 14.80 |
| Street Elbow | 2" | 18.40 |
Applications of Socket Weld Elbows
Construction &
Infrastructure
Automotive & Heavy
Equipment
Manufacturing &
Fabrication
Medical & Laboratory
Equipment
Electrical &
Electronics Assembly
Oil, Gas & Petrochemical
Installations
Do you have questions?
What’s the advantage of socket weld elbows over threaded elbows?
Socket weld elbows offer better structural strength and leak protection, especially under high pressure or vibration conditions.
Are reducing socket weld elbows available?
Yes, we provide both standard and reducing elbows to accommodate mismatched pipe diameters in your layout.
Can socket weld elbows be used for corrosive services?
Absolutely. We manufacture elbows in SS 316, Duplex, and other corrosion-resistant alloys for aggressive environments.
Are elbows tested for quality assurance?
Yes, all socket weld elbows are supplied with Mill Test Certificates (MTCs) and can be offered with third-party inspections like TUV, BV, or SGS.
