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BS EN 10218-2:2012
Steel wire and wire products. General. Wire dimensions and tolerances (British Standard)
This European Standard specifies the tolerances on diameter of round wire and, where applicable, on the length of round wire cut to length, for bright steel wire, (i.e. uncoated), metallic coated steel wire and non-metallic coated steel wire.
This European Standard should not be applied where other requirements for dimensions and tolerances are specified in a particular product standard.
British Standards Institution [bsi]