... material:low carbon steel 2.Bearing bar pitch:30,40,60mm 3.Cross bar pitch:50,100mm 4. ... Steel (Low Carbon Steel) or Stainless Steel.2) Surface Treatment: Hot dip galvanized , Painted , Untreated.3) Shape of bearing bars: Plain style ... x 5 x 3mm, 38 x 5 x 3mm, 40 x 5 x 3mm, 50 x 5 x 3mm, ... pitch: 15mm, 25mm, 30mm, 33. 5mm, 37. 5mm, 40mm, 50mm, etc. and 30, 40, 60mm are recommended.& 60mm6) Cross bar pitch ...