Welded vs. drawn
Maintenance openings such as manholes, headholes or handholes have various functions in unpressurized vessels, such as inspecting weld seams or carrying out cleaning work. Both welded and drawn versions of maintenance openings are common for stainless steel wine tanks.
The welded variants of maintenance openings have various disadvantages. The separate manufacturing process of the manhole insert, the welding and the subsequent cleaning of the weld seam are very complex work processes. In addition, the homogeneous grinding pattern is lost with the welded version.
Areas of application:
The Manway machine from 4Ming® is ideal for the manufacture of pressure vessels, wine tanks and chemical vessels where precisely formed pipe sockets and manways are required. Its versatility and efficiency make it a valuable addition to any production line aiming for high quality and cost-effective tank structures.