Wisconsin Stainless Head Mfg., Inc. has the dies to press a 20″ manway into Stainless Steel tank heads. The same tooling can also be used for Aluminum Tank heads. This allows the heads to be used as surge baffles and stiffening heads with out wasting the man hours welding in a ring to put the strength back in the head after cutting the manway. They also allow a large enough opening for visual inspections of the completed tank.
If laserflim is used the dies do not directly touch the material.
Close up. Stainless Steel tank heads with pressed manway.