JWT Technology


1005 N Washington St.   Lisbon, IA  52253 USA   1-319-408-1111


Spiral duct connections using clamp band  



Clamp bands produced from coil

Spiral flange
Clamp bands

resize photos      

Spiral Pipe Model STF-1250


Vanstone connection


Spiral Pipe

Horizontal and vertical models available

Forms a flange on the ends of spiral duct or fittings 
For duct diameters from 8" to 48"  / 200 to 1250 mm

Maximum thickness 18 gauge / 1.2 mm

A real time saver for Vanstone connections

Spiral Duct Flanger
​Model STF-1250

Spiral Duct Flanger Model STF 1250