3 off Stainless Steel Heater Housing. With a diameter of 14″ NB designed to PD5500 Category 2. designed and manufactured bespoke to order, they are suitable for 30 bar design pressure at 20°C to +180°C as a result, they have 300# RFWN Flanged connections. To comply with PD5500 category 2 they had NDT performed on them, 10% Radiography and 100% DPI. Finished with a pickle and passivation giving a clean bright finish.