Carbon steel weld neck flanges PN100 type 11 B1 according EN1092-1 are used in pipelines and systems working under higher pressure. Weld neck flanges are the preferred way of connection in installations with high requirements, high pressures and temperatures, and in applications where flow continuity is required. Flanges type 11 can be easily butt welded in place and provide rigid and robust assembly. Weld neck flanges provide easy access for further mounting in place of valves and equipment. Standard EN1092-1 and especially the WN flanges PN100 inherits the old standard DIN2637 PN100 and other similar standards. According to EN1092-1, unification of flanges with different types of nominal pressure is made, only for certain sizes. The marking of these unified flanges with the corresponding nominal pressure range is standardized accordingly. For example, the designation PN100/63 means that PN63, PN100 are covered by the same flange.
We can supply carbon or alloy steel flanges in various steel grades and various sealing surfaces such as, but not limited to:
– Grade P245GH, S235JR, P265GH, P280GH, P355GH, 16Mo3 and more
– We can deliver from stock or after additional mechanical work sealing surfaces like A, B1 (RF), B2, D, E, F, and more
– Also Bulmar Trade Ltd keeps on stock weld neck flanges in different neck thicknesses. Even square cut necks with higher than standard thickness are available.
We can perform final machining according customer’s request!