... pitch:50,100mm 4.manufacturer Steel Grating 1) Material: Mild Steel (Low Carbon Steel) or Stainless Steel.2) Surface Treatment: Hot dip galvanized , Painted , Untreated.3) ... section Type: 25 x 5 x 3mm, 32 x 5 x 3mm, 38 x 5 x 3mm, 40 x 5 x 3mm, 50 x ... 5 x 3mm, 50 x ... x 7 x 4mm, 75 x 7 x 4mm, etc.5) Bearing bar pitch: 15mm, 25mm, 30mm, 33. 5mm, 37. ...