| Drainage steel grating cover Drainage ditch material | Steel,Low carbon steel,stainless steel&Q235,A36,SS304,SS316L, S235JR | | Surface treatment | Black, hot dipped galvanized, paint | | Bearing bar width*thickness | 25x3,25x4,30x3,30x4,30x5,32x5,40x5,50x5,.....75x10mm | | Bearing bar pitch | 12.5, 15, 20, 23.85, 25, 30, 30.16, 30.3, 34.3, 35, 40, 41, 60mm. US standard: 1"x3/16", 1 1/4"x3/16", 1 1/2"x3/16", 1"x 1/4", 1 1/4"x 1/4", 1 1/2"x 1/4" etc. | | Bearing bar shape | Plain Style Steel Grating, Serrated Style Steel Grating and I Bar Type Steel Grating. | | Drainage steel grating cover drainage ditch standard | China: YB/T 4001.1-2007, USA: ANSI/NAAMM(MBG531-88), UK: BS4592-1987, Australia: AS1657-1985, Japan: JJS. | | Cross bar shape | round,twisted,bar shape | | Cross bar pitch | 38,50,76,100,101.6mm | | Galvanizing standard | US: ASTM (A123), CN: GB/T13912, UK: BS729 | | Market distribution | America45%,Europe26%,Middle east38%,Other place27% |
main categories
Classification according to the shape of flat steel: flat steel
grid plate, tooth flat steel grid plate, I flat steel grid plate,
etc. According to the form of the bar classification: twisted square
steel bar steel grid plate, round steel bar steel grid plate, flat
steel bar steel grid plate. Classified by surface treatment: hot-dip galvanized steel grid,
cold galvanized steel grid, spray painted steel grid, etc. Hot-dip
galvanized steel grid plate has strong impact resistance and
corrosion resistance. The cost of cold galvanized steel grid is
relatively low, but the rust prevention ability is medium; The
color of the painted steel grid is diverse, but the anti-rust
ability is weak and afraid of wear. Classification by use: platform steel grid plate, ditch cover plate
steel grid plate, stair step plate steel grid plate, etc. These
steel grids are designed according to specific application
scenarios to meet different load bearing, anti-slip, drainage and
other requirements. According to the welding method and other categories: pressure
welding type, insert type, lock type and weld type. In addition,
there are stainless steel grid plate and carbon steel grid plate,
according to the different material, its corrosion resistance,
strength and other properties are also different. |
