Rope rollers, pulleys, mountings and assemblies for colliery track haulage, Specification for vertical spindle pulleys, mountings and assemblies— 12 стр.
Rope rollers, pulleys, mountings and assemblies for colliery track haulage, Specification for parallel barrel rollers, mountings and assemblies— 18 стр.
Specification for approval testing of welders working to approved welding procedures, Arc welding of tube to tube-plate joints in metallic materials— 16 стр.
Design and construction of small kits for oxy-fuel gas welding and allied processes, Specification for kits using refillable gas containers for oxygen and fuel gas— 8 стр.