Weld neck, slip-on, socket weld, blind, lap joint, threaded & orifice flanges in carbon (A105), stainless and alloy (A182) grades. ASME B16.5 / B16.47 and EN 1092-1, Class 150–2500 / PN6–PN400, with RF, RTJ & FF facings — available across the GCC with 3.1 / 3.2 certificates.
A flange joins pipes, valves and equipment with a bolted, gasketed joint that can be dismantled for maintenance. The type is chosen by how it attaches to the pipe and the service; the class (or PN rating) sets the pressure-temperature limit; and the facing (RF, RTJ, FF) sets the sealing method. AAM Steel supplies every combination to ASME and EN standards.
Butt-welded to pipe; best for high-pressure & cyclic service.
Slides over pipe & fillet-welded; easy alignment, lower cost.
Small-bore high-pressure lines; pipe inserted & welded.
Solid disc to close a line, valve or vessel; pressure-test & access.
With stub end; ideal where frequent dismantling or stainless economy needed.
Screwed onto threaded pipe; no welding, utility & low-pressure.
With meter tappings for flow measurement across an orifice plate.
Long weld neck, reducing, spectacle blind, AWWA C207.
| ASME class | EN equivalent (approx.) | Typical facing | Typical service |
|---|---|---|---|
| Class 150 | PN20 / PN16 | RF / FF | Low pressure, utilities, water |
| Class 300 | PN50 / PN40 | RF / RTJ | General process piping |
| Class 600 | PN100 / PN64 | RF / RTJ | Higher-pressure process, oil & gas |
| Class 900 | PN150 | RTJ | High-pressure hydrocarbon |
| Class 1500 | PN250 | RTJ | High-pressure / high-temp |
| Class 2500 | PN420 | RTJ | Extreme pressure service |
EN equivalents are approximate — confirm the exact rating for your design temperature and material group.
Tell us the type, class, facing, size, grade and quantity — we'll quote with MTC and delivery terms across the GCC.
