Socket Weld Cap

Need a dependable fitting? Socket Weld Cap on MetalMitra comes in standard and custom sizes to ASME B16.11, ready for changes in direction, branching and size transitions.

Through MetalMitra you can source Socket Weld Cap in stainless steel, carbon steel, alloy steel, duplex, nickel alloy and other grades, across a broad range of sizes and pressure ratings.

A socket weld cap closes the end of a small-bore pipe permanently with a fillet-welded joint.

Socket weld fittings are forged fittings with a socket bore into which the plain-end pipe is inserted and fillet welded. They are widely used for small-bore process, steam, instrument and hydraulic lines where a strong, leak-tight joint is needed.

Available forms & variants

• Elbows & Tees — 45° and 90° elbows, equal and reducing tees.
• Couplings — Full, half and reducing couplings.
• Unions & Caps — Unions, caps and reducer inserts.
• Bosses — Socket weld bosses for branch connections.

Performance highlights

• Pipe End Closure — Seals the end of a pipe.
• Pressure Rated — Rated as per class.
• Forged Strength — Dense forged grain flow for high-pressure duty.
• Easy Alignment — Socket ends hold the pipe true while welding.

Socket Weld Cap Material & Grades

Pressure Class vs Pipe Schedule

As per ASME B16.11, the pressure class of socket weld fittings is matched to the wall thickness of the connecting pipe:

Typical applications

• Oil & Gas
• Petrochemical
• Chemical Processing
• Refineries
• Power Generation
• Fertilizer Plants
• Pharmaceutical
• Marine & Offshore
• Water Treatment
• Sugar Industry
• Pulp & Paper
• Heat Exchangers
• Fabrication
• General Engineering

Quality checks & certification

Every lot of Socket Weld Cap sourced through MetalMitra can be inspected and documented to the governing standard and your purchase order.

• Dimensional inspection as per ASME B16.11
• Socket bore and depth check
• Visual inspection
• Positive Material Identification (PMI)
• Hardness testing as applicable
• EN 10204 3.1 Mill Test Certificate
• Third-party inspection (TPI) on request

Why buy through MetalMitra

• Checked sellers only — Every supplier profile is screened by MetalMitra before it goes live.
• Faster sourcing — Post one requirement and receive competitive offers without chasing calls.
• Paperwork sorted — MTC 3.1, test reports and TPI arranged as your project demands.
• Global logistics — Seaworthy packing and dispatch to project sites across the world.

Ready to buy?

Send your size, grade, quantity and delivery location for Socket Weld Cap, and matching suppliers on MetalMitra will come back with offers.

Technical note: Figures shown are indicative. Final acceptance should be based on the applicable standard, approved drawings and the MTC supplied with the material.