This standard BS 3958-2:1982 Thermal insulating materials is classified in these ICS categories:
91.100.60 Thermal and sound insulating materials
This Part of this British Standard specifies composition, moisture content, physical and chemical requirements for two types of calcium silicate preformed insulation (see clause 4).
Deals with properties and dimensions of two types of preformed insulation for use up to 650°C and 950°C.