Weldoflange and Nipoflange The Weldoflange and Nipoflange is a combination of a Welding Neck flange and a special Weldolet or Nipolet. A Flange-olet (Flange-outlet) is also called Nipoflange or Weldoflange, its shape looks like a Long weld neck flange. It could be regarded as a combination of a long weld neck flange and a weldolet […]