BS 4568-1:1970

Cooperating organizations
Foreword
Specification
1. Scope
2. General requirements
3. General conditions for the tests described in
    Appendix A
4. Classification
5. Marking
6. Dimensions
7. Construction
8. Mechanical properties of conduit
9. Resistance to corrosion
10. Electrical continuity
11. Test for fittings of malleable cast iron
Appendix
A. Tests
A.1 Test for durability of marking
A.2 Test of mechanical properties of conduit
A.3 Tests for resistance to corrosion
A.4 Requirements for the efficiency of the conduit/
    fitting conducting path
A.5 Tests for malleable cast iron fittings
Figures
1. Screw threads, profile
2. Gauges for screw threads on conduits
3. Gauges for screw threads in fittings
4. Gauges for checking the outside diameter of conduits
5. Gauges for checking permissible ovality of conduits
6. Bending tool
Standard sheets
1. Conduits, light gauge, (plain)
2. Conduits, heavy gauge, (screwed or plain)
3. Couplers, plain
4. Bends, plain
5. Bends, internally plain
6. Couplers, internally screwed
7. Bends, externally screwed

Classification, dimensions and tests for plain and threaded conduit, bends and couplers in metric sizes.