Tubes
Insulating and structural tubes
for transformer applications
Tubes are essential components in power and distribution transformers, serving a variety of mechanical and insulation functions. Whether used to guide oil flow, insulate conductors, or form part of a winding cylinder, these tubes are designed to support reliable and efficient transformer operation.
Manufactured from high-quality Transformerboard or cellulose paper, tubes can be produced in rigid or flexible formats to suit specific application needs. A wide range of dimensions and geometries – including custom forms such as S-shaped or T-shaped designs – are available to meet diverse transformer design requirements.
Tubes and Corrugated Tubes (molded from wet sheet)
Crepe Paper Tubes
Wound Paper Tubes
Weidmann Tubes
Crepe Paper Tubes are provided with a minimum inside diameter of 2mm, a minimum wall thickness of 0.50 mm, and a maximum length of 1828 mm. In imperial dimensions, the minimum inside diameter is 3/16″, the minimum wall thickness is 1/32″, and the standard length is 6 feet (1828 m).
Wound Paper Tubes usually insulate conductors, but with a large inside diameter and wall thickness they also serve as winding cylinders in distribution transformers. Depending on the apparatus involved, tubes made of different raw materials are required.
Weidmann Tubes are made of insulating paper, diamond-dotted paper, and bakelite paper (phenolic resin/paper combination), in all diameters.
