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What is a Socket Weld Flange

A Socket Weld Flange is designed for small-bore, high-pressure piping systems. The pipe is inserted into a recessed socket area and fillet welded to the flange hub, creating a strong, leak-proof connection.

Key Features

• Socket bore matches pipe outer diameter for precise fit
• Fillet weld provides strong mechanical connection
• Internal crevice minimized for better flow characteristics
• Available in raised face (RF) or ring type joint (RTJ)

ਫਾਇਦੇ

1. Excellent for high-pressure applications
2. Better fatigue strength than slip-on flanges
3. No beveling required for welding
4. Good flow characteristics with proper gap
5. Cost-effective for small diameter piping

ਲਾਗੂਆਂ

• High-pressure steam lines (NPS 2 and below)
• Hydraulic systems
• Chemical injection lines
• Instrument tubing connections
• High-pressure process piping

Installation Guidelines

Important: Leave a 1.6mm (1/16 inch) gap between pipe end and socket bottom to allow for thermal expansion and reduce weld stress.

Standards and Specifications

• ASME B16.5: NPS 1/2 to 3, Class 150-2500
• ASME B16.11: Forged fittings, socket weld and threaded
• EN 1092-1: European standard socket weld flanges

Material Options

• Stainless Steel: 304/304L, 316/316L, 321, 347
• Carbon Steel: ASTM A105, A350 LF2
• Alloy Steel: F11, F22, F91
• Duplex Steel: 2205, 2507

Socket weld flanges are the ideal choice for small-bore, high-pressure piping systems where leak-tight integrity is critical.

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