ED Decision 2003/13/RM
The following materials are accepted as fireproof, when used in firewalls or shrouds, without being tested -
(1) stainless steel sheet, 0.38 mm thick;
(2) mild steel sheet (coated with aluminium or otherwise protected against corrosion) 0.5 mm thick;
(3) steel or copper base alloy firewall fittings.
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