1. suitable for argon arc welding, plasma cutting and for making cathodes for projecting devices 2. made in Luoyang GradeContent La2O3%Diameter(mm)DiameterToleranceLength(mm)blackPolished(mm1.3-1.71.01.5(1.6)2.02.4(2.5)3.0(3.2)4.05.06.06.5±2%±0.03150-500WLa-151.8-2.2±0.051. suitable for argon arc welding, plasma cutting and for making cathodes for projecting devices2. made in Luoyang
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