... required light structure-Firm mesh welding structure endows ISO9001:2000 Bar grating1. type: plain, serrated, 1,press-locked2. ... FB405/30/100,3. 1m*6m4. surface:untreatment, galvanizedsteel bar gratingMaterial specification:1,mild steel : ASTM A36,BS4306,JIS ... 304SUS316Specification of steel grating: Item No.Bearing bar pitchCross bar pitchSpecification of bearing bar load(width * thickness) 20*325*332 ...