The J50 is used when a B-30 class division is required.
These panels are sandwich type, with a total panel thickness of 50 mm, composed by galvanized steel plate, painted or covered with adecorative coat of flame retardant PVC in the exposed side (according to color chart), or withstainless steel plate of different finishing.
The core is made up of mineral wool plates of density 180 kg/m3, faced on each side with 0.7mm galvanized steel sheets.
lt is possible to incorporate an integrated cable track /conduit.
These panels may be reinforced with a galvanized steel plate, by one or both sides.
The reinforcement of this type of panel is usually necessary when the bulkhead has parts fitted on it.
Moreover, they would also have B-15 and B-0 class.