Bolted Manholes
Portex bolted manholes provide secure access to pressure vessels. Their peripheral bolting ensures excellent mechanical strength and long‑lasting sealing.
Characteristics
Type: Circular bolted manholes
Available diameters: Standard DN 400, 450, 500, 600, 640 (According on the model)
Materials: Carbon steel S235JR
Closing systems: Peripheral bolting
Applications: Portex bolted manholes are used for:
• Pressure vessels
• Chemical and petrochemical industry