Our Multilayer Design has many Advantages

The internationally proven multilayer construction promoted by SBN can be used to advantage anywhere where high pressures are combined with large-dimensioned high-pressure vessels and shell lengths (for example in Urea Reactors, Pool Condensers und Pool Reactors or Ammonia Converters).

Particular Advantages of the SBN Multilayer Design
Manufacturing the shell from elements of low thickness (approx. 8 - 10 mm) produces better metallurgical characteristics such as higher yield strength and stability.

For processes involving high corrosion attack, either the core shell is made of corrosion-resistant material or an appropriate loose lining is installed.

The higher the operational pressures and pressure vessel diameter or length, the more favorable the weight ratio between multilayer and monowall design.

Considerably greater safety reserves are achieved by the more elastic overall behavior of the shell, by ventilation holes through all layers and a special system in the vicinity of the longitudinal and circumferential welding seams.

Spatial stresses and susceptibility to brittle fracture are virtually negligible. Furthermore, even on initial loading, behavior is similar to that of a solid wall.