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EN 1092-1 TİP 11 PN 16 Welded Neck Flange
Type : Kaynak Boyunlu Flanş
Malterial:ST 37-42 Karbon Çelik,304/316 Paslanmaz Çelik
Measurement Scale : DN 15 - DN 2000
Pressure Class : PN 16
Ts En 1092 - 1 +A1 Tip 11
Dın 2633 
The biggest feature of welded neck flanges is to have a tall and conical neck and that differs them from the other flanges. Wall thickness of this neck section,  decrases from bottom to tip of it which will be welded. In this flange type pipe and flange getting connected end to end and then welding process is operating. Conical neck gains strenght to flange and keeps the system lives longer against the disinformation which can happen in the pipe systems. Type 11 flanges are mostly prefered in heavy usage circumctances.