1. BS 4604-2:1970. Specification for The use of high strength friction grip bolts in structural steelwork metric series - Part 2: Higher grade (parallel shank)

2. BS 4607-2:1970. Specification for Non-metallic conduits and fittings for electrical installations - Part 2: Rigid PVC conduits and conduit fittings. Imperial Units

3. BS 4607-3:1971. Specification for Non-metallic conduits and fittings for electrical installations - Part 3: Pliable corrugated, plain and reinforced conduits of self-extinguishing plastics material

4. BS 4607-5:1982 + A3:2010. Non-metallic conduit fittings for electrical installations - Part 5: Specification for rigid conduits, fittings and boxes of insulating material

5. BS 4677:1984. Specification for Arc welding of austenitic stainless steel pipework for carrying fluids

6. BS 4678-1:1971. Specification for Cable trunking - Part 1: Steel surface trunking

7. BS 4678-2:1973. Specification for Cable trunking - Part 2: Steel underfloor (duct) trunking

8. BS 4678-4:1982 . Cable trunking - Part 4: Specification for cable trunking made of insulating material

9. BS 4695:1980 ISO 3841:1977. Method for Determination of melting point of petroleum wax (cooling curve) [ISO title Petroleum waxes - Determination of melting point (cooling curve)] technically equivalent to method ASTM D 87

10. PD CEN/TR 16832:2015. Selection, use, care and maintenance of personal protective equipment for preventing electrostatic risks in hazardous areas (explosion risks)