Industry trends and buying guides for pipe fittings, valves, and flanges for B2B buyers.
A slip-on flange slides over the pipe and is normally attached with fillet welds. It is widely used because fit-up is straightforward and the flange can be positioned before welding. Correct selection still requires the standard, size, rating, material,...
A socket weld flange has a machined socket that receives the pipe end. The pipe is inserted, positioned to the approved fit-up detail, and attached by a fillet weld at the hub. The socket helps locate the pipe, but correct bore, socket depth, pipe...
A spectacle blind combines a solid blank and an open spacer in one figure-eight component. It is installed between two flanges and rotated so the line is either positively blocked or open. Its visible position helps operators confirm the isolation state.
A weld neck flange connects to pipe with a butt weld at the tapered hub. The hub provides a gradual transition from the flange body to the pipe, so this type is often selected where pressure, temperature, cyclic loading, or joint reliability is important....
An anchor flange is a pipeline component used to transfer axial and other design loads from the pipe into an anchor block, structure, or restraint system. Unlike common bolted pipe flanges, many anchor flanges are project engineered and manufactured to an...
Flange standards define controlled systems for dimensions, ratings, tolerances, marking, materials, and testing within a stated scope. The purchase order must identify the exact standard and contract edition. “ANSI flange” by itself is usually incomplete...
A flat face flange has a gasket contact surface that is substantially flat across the flange face according to its design standard. It is used in specific piping and equipment systems where the joint design calls for an FF facing.
A long weld neck flange has an extended neck that can form part of a vessel, tank, or equipment nozzle. Unlike a standard weld neck flange used at a pipe joint, its neck length, bore, outside profile, and transition may be defined by an equipment drawing.
Nominal pipe size is a standardized designation used to identify pipe and matching components. NPS is not a direct measurement of pipe inside diameter, and for most sizes it is not equal to the actual outside diameter. DN is a metric nominal designation...
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