Explosive atmospheres. Technical requirements and test methods for endurance to environmental factors influencing the peculiarities of operation of equipment in explosive atmospheres
Steel pattern plates with changeable metal inserts for moulding boxes having inside dimensions 1000x800 mm for moulding machines without turn of half mould without squeezing. Design and dimensions
Tests for electric and optical fibre cables under fire conditions. Circuit integrity. Part 21. Procedures and requirements. Cables of rated voltage up to and including 0,6/1,0 kV
