Specifications 1. Supplier of complete grating equipments2. Full ranges of gratings3. Supplier of top 500 companies4. Capability 6000M/T Products Description: 1) Bearing Bar (Load Bar) Specifications (mm):The specification of plain type and serrated type bearing bar is 20 x 3 to 100 x 9;the specification of I-section type is 25 x 5 x 3, 32 x 5 x 3, 38 x 5 x 3, 40 x 5 x 3, 50 x 5 x 3, 50 x 7 x 4, 55 x 7 x 4, 60 x 7 x 4, 65 x 7 x 4, 70 x 7 x 4, 75 x 7 x 4, etc. 2) Bearing Bar Pitch (center to center):12.5 to 100 mm etc, also be according to client's requirement and 30, 40, 60mm are recommended, America standard is available. 3) Cross Bar Pitch (center to center):from18.5 to 101.6mm etc, also be according to client's requirement and 50, 100mm are recommended, America standard is available. 4) Material: Mild Steel (Low Carbon Steel) or Stainless Steel 5) Surface Treatment:Untreated, Painting or Hot Dipped Galvanizing 6) Steel grating standards:A) China: YB/T4001.1-2007B) U.S.A.: ANSI/NAAMM (MBG531-88)C) U.K.: BS4592-1987D) Australia: AS1657-1985E) Japan: JJS 7) Hot Dipped Galvanizing Standards: A) China: YB/T 13912-2002 B) U.S.A.:ASTM A123