TAPARIA- pipe range spanner chart for pipe ,Pipe Vices Generally Conforming to IS 6007 - 1971 Body made from malleable cast iron.Jaws are drop forged and differentially Hardened.Hardness on the body of the jaw : 40 to 45 HRC & Teeth of the Jaw is Above 50 HRC.Vertical upright section of the base is provided with holes for mounting of the frame.Accurately machined jaws provide firm grip on the pipe.Buy Hydraulic Pipe Spanners at Cromwell ToolsSearch results for hydraulic pipe spanners. ( 139) Items found. Rate Your Search Experience. Metric Flare Nut Spanners, Chrome Vanadium Steel. Spanner Size 6mm x 8mm. Standards Met ANSI B107.9M. Metric or Imperial Metric. Overall Length 135mm. More Information.