Product Selection

Types of Flanges: Selection by Connection and Service

The main types of flanges differ by how they connect to pipe, how they seal, and what function they perform. Common examples include weld neck, slip-on, blind, socket weld, threaded, lap joint, orifice, long weld neck, plate, and line-blank arrangements....

Jul 25, 2026

What Is a Flange? Function, Parts, and Selection

A flange is a rimmed or disc-shaped component used to make a bolted connection, close an opening, or connect pipe to valves, equipment, and fittings. A complete flanged joint normally includes two mating faces or a flange and closure, a gasket where...

Jul 25, 2026

Blind Flange vs Spectacle Blind: Which Isolation Fits?

In blind flange vs spectacle blind selection, the key difference is location and operating function. A blind flange closes the end of a flanged opening. A spectacle blind sits between two flanges and can be rotated between a solid blank and an open spacer...

Jul 25, 2026

Raised Face vs Flat Face Flange: Joint Compatibility

The difference in raised face vs flat face flange joints is the gasket seating geometry. A raised face has a defined raised contact area. A flat face is substantially flat across the flange face. The correct choice depends on the flange standard, equipment...

Jul 25, 2026

Socket Weld Flange Welding: Fit-Up and Inspection

Correct socket weld flange welding starts with a clean, dimensionally compatible socket and pipe. The pipe is positioned according to the approved fit-up detail, the flange is aligned, and the fillet weld is deposited under a qualified welding procedure....

Jul 25, 2026

Weld Neck Flange vs Slip-On Flange: Practical Selection

The choice in weld neck flange vs slip-on flange selection is mainly a choice between a butt-welded tapered hub and a flange that slides over the pipe and is fillet welded. Neither type is universally correct. The approved piping class, service, loads,...

Jul 25, 2026

Weld Neck Flange Welding: Fit-Up, WPS, and Inspection

Successful weld neck flange welding depends on a matched flange bore, correct bevel preparation, controlled root alignment, a qualified WPS, and inspection suited to the service. The flange hub and pipe end form a butt-welded transition, so mismatch should...

Jul 25, 2026

ASTM A105 Class 150 Flange Guide: Material, Rating, and Selection

A practical explanation of ASTM A105 material combined with ASME Class 150 dimensions and ratings, including flange type, facing, temperature, inspection, and ordering details.

Jul 22, 2026

What Is a Flange? Meaning, Definition, Types, and Uses

A practical definition of pipe flanges, including how flanged joints work, major flange types, facing options, materials, standards, inspection points, and selection guidance.

Jul 22, 2026

Types of Flanges: Selection by Connection and Service

What Is a Flange? Function, Parts, and Selection

Blind Flange vs Spectacle Blind: Which Isolation Fits?

Raised Face vs Flat Face Flange: Joint Compatibility

Socket Weld Flange Welding: Fit-Up and Inspection

Weld Neck Flange vs Slip-On Flange: Practical Selection

Weld Neck Flange Welding: Fit-Up, WPS, and Inspection

ASTM A105 Class 150 Flange Guide: Material, Rating, and Selection

What Is a Flange? Meaning, Definition, Types, and Uses

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