Classification opinions
… of securing, by means of special bolts, various types of equipment (machines, railway track, conveyor track, … of up to 10 m and a width of from 0.30 to 1 m, used in buildings, (in casting concrete floors, etc.). Adoption : … ceilings, etc. and for attaching electric cables or other conduits, junction boxes, etc. Adoption : 1967 … 7. …