BB
BB is an abbreviation of Bolted Bonnet. A bolted bonnet, or cover of a valve, is fastened (by bolts) to the valve body to complete the pressure-retaining shell.
BBE
BBE is an abbreviation of Beveled Both Ends. Beveled Both Ends means that both ends of e.g. a pipe nipple are beveled.
TOE / POE = Treaded One End / Plain One End
TOE / BOE = Treaded One End / Beveled One End
POE / BOE = Plain One End / Beveled One End
TBE = Treaded Both Ends
PBE = Plain Both Ends
BE
BE is an abbreviation of Beveled Ends.
Beveled Ends are applied to all diameters of buttweld pipes, flanges, fittings, valves etc. and will be directly welded (with a small gap 3-4 mm) to each other. Ends are mostly be beveled to angle 30° (+5° / -0°) with a root face of 1.6 mm (± 0.8 mm).
BOM
BOM is an abbreviation of Bill Of Materials.
A Bill Of Materials is a detailed item by item tabulated list of the project requirements for piping. It specifies the required item by the reference grade and standard to which it must be made, by the size and its rating. The information on this table is entirely extracted from the material take-off documents.
BW
BW is an abbreviation of Butt Weld(ing).
A Butt Weld is a circumferential butt welded joint, and the most common type of joint employed in the fabrication of welded pipe systems. A butt joint is the most universally used method of joining pipe to itself, fittings, flanges, valves, and other equipment. This welding technique is widely applied in situations where a quality weld desired, and the weld by X-ray technically should be investigated.
