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.Cross References:BS 350BS 427:Part 1BS 970:Part 1BS 1133:Section 6BS 1387BS 1408BS 1449BS 2789BS 5216BS 6681BS EN 10083