This standard BS 3594-1:1963 Specification for pipe wrenches is classified in these ICS categories:
25.140.30 Hand-operated tools
This British Standard relates to the essential dimensions, quality, finish, testing and marking of pipe wrenches of the Stillson type as illustrated in Figure 1 and Figure 2 in nominal sizes as follows:
8 in; 10 in; 12 in; 14 in; 18 in; 24 in; 36 in and 48 inch.
Specifies requirements for pipe wrenches of the Stillson type having integral teeth, in respect of materials, heat treatment and hardness, manufacture, dimensions and capacities, finish, marking and testing.