charpy impact test for welding Specifications JB-300B JBS-300B JBW-300B JB-500B JBS-500B JBW-500B Type Type B Impact energy (J) 150,300 250,500 Impact velocity (m/s) 5.2 5.4 5.24 Raised angle 150º Power supply 3phs, 380V, 50Hz/60Hz or Specified by users Dimensions (mm) 2124 x 600 x 1340 2144 x 736 x 1390 Gross weight(KG) 550 750