Socket Weld Flange Manufacturer
- High-strength connection
- Excellent sealing performance
- Suitable for small-diameter, high-pressure pipelines
High Quality Socket Weld Flange
The SSM Socket Weld Flange is designed for use with small-diameter, high-pressure pipes. It creates a secure pipe connection through socket and welding. This type of flange is commonly used in industrial piping systems that demand strong connections and effective sealing.
SSM offers a variety of socket weld flanges covering different sizes, pressure ratings, connection surface types, and materials to meet the needs of various customers.
- Size: 1/2″ to 48″
- Pressure Rating: Class 150, 300, 600, 900, 1500, 2500
- Joint Type: Flat Face (FF), Raised Face (RF), Ring Type Joint (RTJ)
- Material: Carbon steel, stainless steel, nickel alloy, duplex stainless steel, aluminum, copper-nickel alloy
What is a Socket Weld Flange
Socket Weld Flange is a type of flange used to connect pipe systems, especially for joining small-diameter, high-pressure pipes. It has a socket inside the flange where one pipe end is inserted and then secured by welding.
Socket Weld Flange Cross Section
Advantages of Socket Weld Flanges
Economical and practical
The Socket Weld Flange manufactured by SSM is particularly suitable for connecting small-diameter and high-pressure pipes. It provides an efficient solution, is cost-effective, and is easy to install.
High-strength connection
The socket welding method is adopted, and the weld is located outside the pipe. This provides a high-strength connection suitable for high-pressure and high-temperature environments.
Superior sealing performance
Because the welding position is in the outer area where the pipe contacts the flange, there is no weld inside. Hence, the inner diameter remains intact, reducing the possibility of leakage.
Easy installation
After inserting the pipe, only simple welding is required, without complex tools and processes, saving installation time and cost. The strong connection formed after welding reduces the need for daily maintenance and lowers operating costs.
Slip On Flange Dimensions
Below are the dimensions for a Class 300 Socket Weld Flange
| Nominal Pipe Size (NPS) | Flange Outside Diameter (OD) | Flange Thickness (T) | Socket Depth (B) | Hub Diameter (C) | Bolt Circle Diameter | Number of Bolts | Bolt Diameter |
| 1/2″ | 95 mm (3.75″) | 14.3 mm (0.56″) | 16 mm (0.62″) | 37 mm (1.46″) | 70 mm (2.75″) | 4 | 12.7 mm (0.5″) |
| 3/4″ | 117 mm (4.62″) | 15.9 mm (0.62″) | 16 mm (0.62″) | 43 mm (1.69″) | 82.5 mm (3.25″) | 4 | 15.9 mm (0.62″) |
| 1″ | 124 mm (4.88″) | 17.5 mm (0.69″) | 19 mm (0.75″) | 51 mm (2.01″) | 89 mm (3.5″) | 4 | 15.9 mm (0.62″) |
| 1 1/2″ | 155 mm (6.12″) | 20.6 mm (0.81″) | 22 mm (0.87″) | 73 mm (2.87″) | 114 mm (4.5″) | 4 | 19 mm (0.75″) |
| 2″ | 165 mm (6.5″) | 21.4 mm (0.84″) | 22 mm (0.87″) | 92 mm (3.62″) | 127 mm (5″) | 8 | 19 mm (0.75″) |
| 3″ | 210 mm (8.25″) | 24.6 mm (0.97″) | 28 mm (1.12″) | 127 mm (5″) | 168 mm (6.62″) | 8 | 19 mm (0.75″) |
| 4″ | 254 mm (10″) | 26.2 mm (1.03″) | 29 mm (1.13″) | 157 mm (6.18″) | 200 mm (7.88″) | 8 | 22.2 mm (0.88″) |
| 6″ | 318 mm (12.5″) | 31.8 mm (1.25″) | 32 mm (1.25″) | 216 mm (8.5″) | 270 mm (10.62″) | 12 | 22.2 mm (0.88″) |
| 8″ | 381 mm (15″) | 34.9 mm (1.38″) | 35 mm (1.38″) | 270 mm (10.62″) | 330 mm (13″) | 12 | 25.4 mm (1″) |
| 10″ | 445 mm (17.5″) | 39.7 mm (1.56″) | 40 mm (1.56″) | 324 mm (12.75″) | 387 mm (15.25″) | 16 | 28.6 mm (1.13″) |
| 12″ | 521 mm (20.5″) | 44.5 mm (1.75″) | 45 mm (1.75″) | 381 mm (15″) | 451 mm (17.75″) | 16 | 31.8 mm (1.25″) |
Note: Dimensions can vary slightly based on manufacturer specifications, so always consult the specific standards or manufacturer data for precise measurements.
One-Stop Flange Provider for All Your Needs
SSM has significant product advantages in manufacturing socket weld flanges. Whether it’s quality or price, we will meet your needs.
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Additional information on Socket Weld Flange
Socket weld flange is one of the most commonly used flanges. Please continue reading for information on flange size, installation, and more.
Installation Process of Socket Weld Flange
The installation steps for the socket welding flange are as follows:
Step 1. Preparation
Check the integrity of the flange, pipe, and welding materials.
Cut the pipe to the appropriate length, ensuring a flat and burr-free cut.
Step 2. Alignment
Insert the pipe into the flange’s socket, leaving a 1/16-inch (1.6-mm) gap to allow for thermal expansion during welding.
Ensure the pipe is correctly aligned with the flange.
Step 3. Spot Welding and Final Welding
Begin by spot welding to secure, then conduct peripheral welding to ensure a smooth and defect-free weld.
Step 4. Inspection and Assembly
Conduct a visual inspection or non-destructive testing to guarantee welding quality.
Align the mating flanges, insert and tighten the bolts, and add gaskets if necessary.
Step 5. Testing and Recording
Perform a pressure test to confirm a leak-free connection.
Document the installation process and test results for future reference.
Proper installation of socket welding flanges demands precise alignment, correct welding, and thorough inspection to establish a secure and reliable connection.
Socket Weld Flange vs. Weld Neck Flange
| Feature | Socket Weld Flange | Weld Neck Flange |
| Design | Has a socket into which the pipe is inserted and welded. | Features a long neck that is welded to the pipe, creating a gradual transition. |
| Welding Method | Pipe is inserted into the flange socket and welded, typically with a fillet weld. | The neck of the flange is welded to the pipe, often with a full penetration weld. |
| Advantages | – Cost-effective | – High strength |
| – Suitable for low to medium pressure and temperature | – Better stress distribution | |
| – Simple installation | – Suitable for high pressure and temperature applications | |
| – More durable | ||
| Disadvantages | – Stress concentration at the pipe-flange junction | – Higher cost |
| – Weld quality directly affects reliability | – More complex installation | |
| – Requires higher technical expertise | ||
| Applications | – General industrial applications | – Oil and gas industries |
| – Construction | – Chemical processing | |
| – Lower pressure systems | – High pressure and temperature systems |
Socket Weld Flange vs. Lap Joint Flange
| Feature | Socket Weld Flange | Lap Joint Flange |
| Design | Features a socket into which the pipe is inserted and welded. | Consists of a loose flange that fits over a stub end, allowing for rotation. |
| Welding Method | Pipe is inserted into the flange socket and welded, typically with a fillet weld. | The stub end is welded to the pipe, while the flange itself is bolted to the stub end. |
| Advantages | – Cost-effective | – Allows for easy alignment and adjustment |
| – Suitable for low to medium pressure and temperature | – Suitable for applications requiring frequent disassembly | |
| – Simple installation | – Good for misalignment correction | |
| Disadvantages | – Stress concentration at the pipe-flange junction | – Not suitable for high-pressure applications |
| – Weld quality directly affects reliability | – Larger space requirements | |
| – May have potential for leakage if not properly aligned | ||
| Applications | – General industrial applications | – Piping systems requiring frequent maintenance or alignment |
| – Construction | – Systems with frequent disassembly needs | |
| – Lower pressure systems | – Low to medium pressure systems |
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