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BS 4841-3:2006

Действует
Rigid polyisocyanurate (PIR) and polyurethane (PUR) products for building end-use applications, Specification for laminated boards (roofboards) with auto-adhesively or separately bonded facings for use as roofboard thermal insulation under built up bituminous roofing membranes — 20 стр.
ICS
91.100.60 Thermal and sound insulating materials / Тепло- и звукоизоляционные материалы