Division .3 Pipes penetrating ‘A’ or ‘B’ class divisions shall be of approved materials having regard to the temperature such divisions are required to withstand.F1

In ships constructed on or after 1 January 2003 , no-insulated metallic pipes penetrating ‘ A ’ or ‘ B ’ class divisions shall be of materials having a melting temperature which exceeds 950 °C for ‘ A-0 ’ and 850 °C for ‘ B-0 ’ class divisions.