Import Socket Weld Flanges

Buy Import Socket Weld Flanges for High Pressure Piping

Import Socket Weld Flanges are a practical choice for small diameter, high pressure lines where a tight, reliable connection is needed. Many engineers prefer this style when they want a clean fit-up and a weld joint that holds steady during demanding service. When you shop these flanges for plant maintenance or new construction work, you’re typically looking for consistent machining, correct socket depth, and a smooth bore transition so crews can move quickly during installation.

How Socket Weld Connections Work in Real Plant Conditions

A socket weld flange uses a single external fillet weld to join the pipe. Before the weld is made, the pipe is set into the socket, then pulled back roughly 1/16 inch as called out in ASME B31.1. This small gap helps reduce stress during weld cooling. Most maintenance teams already know this step saves trouble later when systems run at elevated temperature or frequent cycling.

These flanges line up well with small bore stainless steel pipe, but crews keep an eye on the expansion gap. When the piping system handles corrosive service, that gap can collect fluid and create long-term corrosion concerns. It’s one reason many plants match the flange grade carefully to the process. If you’re looking for stainless options, you can browse our stainless steel pipe flange collections for additional grades and configurations.

Choosing Import Socket Weld Flanges for Your Budget and Timeline

Budget Socket Weld Flanges are popular across refineries, chemical plants, and fabrication shops where cost is part of the decision. Many procurement teams balance price with machining accuracy to keep projects on schedule. Import Socket Weld Flanges give you that cost control while still meeting the dimensional standards needed for trouble-free assembly.

If you’re building out a full spool, you can also shop companion products like Slip On Flanges or Weld Neck Flanges in our catalog. Pairing these helps standardize your BOM and simplifies purchasing.

Applications That Fit Your Operation

Most crews use socket weld connections for steam lines, hydraulic skids, compressed air service, and small branch takeoffs running in the 150 to 600 class range. They’re easy to align in tight rack spaces where access is limited. Fabricators appreciate that the single weld saves time during fit-up and testing.

Browse our full line of Import Socket Weld Flanges to match your spec, material grade, and pressure class. If you need other flange types to complete a package, explore our full Flanges section for more options you can buy or shop as needed.

Sizes

Size & Dimension table for Flanges

Materials

A105 - The standard forged carbon steel piping components for ambient and high temperature / pressure systems

SS304 - A common standard for stainless steel due to its malleability, high corrosive resistance weld-ability  

SS316 - A molybdenum stainless steel that provides excellent tensile, creep and stress-rupture strengths at elevated temperatures

Material Description for Flanges

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