Seamers make longitudinal butt welds on sheet metal parts of various shapes such as cylinders, flat sheets and cones.  They can be used with the TIG, MIG, Plasma and Sub Arc welding processes.  In the seamer the part is clamped between copper fingers and a stationary mandrel with a copper back up bar.  The copper bar provides excellent chilling of the weld area and the precision machined fingers and back up bar ensure accurate even clamping and uniform chilling of the heat affected zone.

As the clamping fingers press down on the part, they also push in to create a tight joint.  Use of large diameter rollers on the carriage and hardened, ground roundways on the beam ensures that torch travel is smooth and straight.  The beam and the track are precisely positioned so the torch travels exactly over the weld joint.

The External Seamer is the most common type of seamer.  The weld is made on the outside of a cylindrically shaped part on material from .005" to 3/8" thick and up to 25 feet in length.

Similar to External Seamers, the Bench Seamer is designed for light gauge material and parts from 12" to 36" in length.

The bed of the Elevating Seamer raises and lowers which makes it ideal for making the longitudinal seams on various larger diameter applications such as tanks.  The motorized lifting mechanism uses dual screw drives for smooth lifting and the redundancy makes it especially safe.  The Elevating Seamer accommodates parts up to 96" in diameter and 20' in length.