Heavy duty Galvanized Steel Grating Drain Cover Free Sample
Customized
Heavy Duty trench cover is applied on walkway, carriageway,
courtyard etc; used as cover for drainage trench, wire ditch,
subway, and air pit, hot-dip-galvanizing finish is used as
antiseptic. Grating trench cover is composed of fixed frame &
movable grating. It can be classified to Type T, U and M according
to structures.
The usage of drain grate covers - sewer grating,crni trench cover
As a cover in a variety of passer-by, driveway, yard and
construction for water leakage, Trenching, underpass subway, light
well, inspection well and etc
Trench Covers are widely used in Mass transportation, subways,
playground, industrial areas, parks and high ways...etc
Trench Covers are ideal for sub-stations, waste-water treatment
plants, and chemical facilibility
Material- sewer grating,crni trench cover
| Bearing bar | Q235A or stainless steel |
| Cross bar | Q235A or 304 stainless steel |
Steel grating standards - sewer grating,crni trench cover
| Country | Steel grating standars | steel standard | Hot dipped galvazising standard |
| China | YB/T4001.1-2007 | GB700-88 | GB/T13912-2002 |
| U.S.A | NASI/NAAMM(MBG531-88) | ASTM(A36) | ASTM(A123) |
| U.K | BS4592-1987 | BS4360(43A) | BS729 |
| Australia | AS1657-1992 | AS3679 | AS1650 |
Example for specification- fabricated gully grating,hatch board
| Item No | Bearing bar pitch | Cross bar pitch | specification os bearing bar(width*thickness) |
| 20*3 | 25*3 | 32*3 | 40*3 | 20*5 | 25*5 |
| 1 | 30 | 100 | G203/30/100 | G253/30/100 | G323/30/100 | G403/30/100 | G205/30/100 | G255/30/100 |
| 50 | G203/30/50 | G253/30/50 | G323/30/50 | G403/30/50 | G205/30/50 | G255/30/50 |
| 2 | 40 | 100 | G203/40/100 | G253/40/100 | G323/40/100 | G403/40/100 | G205/40/100 | G255/40/100 |
| 50 | G203/40/50 | G253/40/50 | G323/40/50 | G403/40/50 | G205/40/50 | G255/40/50 |
| 3 | 60 | 50 | G203/60/50 | G253/60/50 | G323/60/50 | G403/60/50 | G205/60/50 | G255/60/50 |
| Bearing Bars | Cross Bars | Type 19-W-4 | Type 19-W-2 | Type 15-W-4 | Type 15-W-2 |
| 3/4 x 1/8 | 1/4 | 3.99 | 4.63 | 4.95 | 5.59 |
| 3/4 x 316 | 1/4 | 5.67 | 6.31 | 7.11 | 7.75 |
| 1 x 1/8 | 1/4 | 5.15 | 5.79 | 6.44 | 7.08 |
| 1 x 3/16 | 1/4 | 7.35 | 7.99 | 9.27 | 9.91 |
| 1-1/4 x 1/8 | 1/4 | 6.20 | 6.84 | 7.79 | 8.43 |
| 1-1/4 x 3/16 | 1/4 | 9.03 | 9.67 | 11.43 | 12.07 |
| 1-1/2 x 1/8 | 1/4 | 7.35 | 7.99 | 9.27 | 9.91 |
| 1-1/2 x 3/16 | 5/16 | 10.94 | 11.80 | 13.82 | 14.68 |
| 1-3/4 x 3/16 | 5/16 | 12.62 | 13.48 | 15.98 | 16.84 |
| 2 x 3/16 | 5/16 | 14.30 | 15.16 | 18.14 | 19.00 |
| 2-1/4 x 3/16 | 5/16 | 15.87 | 16.74 | 20.16 | 21.03 |
