Model Number: xby-sg-#0570 Brand Name: xinboyuan Key Specifications/Special Features: Specifications of steel grating:Item descriptions:Bearing bar: 20x5, 25x3, 25x4, 25x5, 30x3, 30x4, 30x5, 32x3, 32x5, 40x5, 50x75x8mmUS standard:1x3/16, 1 1/4x3/16, 1 1/2x3/16, 1x1/4, 1 1/4x1/4, 1 1/2x1/4, 1x1/8, 1 1/4x1/8, 1 1/2x1/8''Bearing bar pitch: 25, 30, 30.16, 32.5, 34.3, 40, 50, 60, 62, 65mm
US standard:19-w-4, 15-w-4, 11-w-4, 19-w-2, 15-w-2
Cross bar: 5x5, 6x6, 8x8mm (twisted bar or round bar)
Cross bar pitch: 40, 50, 60, 65,76,100,101.6,120,130mm or as customers’requirement
Flat bar type: plain, serrated (tooth-like), I bar (I section)
Materials: low carbon steel (Q275/Q235/Q195,ASTM A36, A1011, A569, S275JR, SS304, SS400,UK: 43A), Stainless steel, aluminum-alloy
Galvanizing standard: CN: GB/T13912, US: ASTM (A123), UK: BS729
Steel grating standards:
A. China: YB/T4001-1998
B. USA: ANSI/NAAMM (MBG 531-88)
C. UK: BS4592-1987
D. Australia: AS1657-1988
E. Japan: JJS
Surface treatment: black, electro galvanized (cold dipped galvanized), hot-dippedgalvanized, painted, powder coated or as customer’srequirements and hot-dipped galvanizing is generally recommended