Galvanized Serrated Road Drainage Steel Grating/Heavy Duty Galvanized Steel Grating for Floor, Manhole Cover, Drainage
Type of steel grating | W-pressure welded grating; L- pressure locked grating; C- socket welding grating |
Pitch of bearing bars | 15-30mm, 40mm, 60mm, 80mm, 90mm etc. with 30, 40mm recommended. |
Pitch of cross bars | 30, 38, 50, 76, 100mm etc. with 50, 100mm recommended. |
Sign of the shape of bearing bar | F-plain surface (F is usually can be omitted); S-serrated surface; I-the section is of "I" type. |
Surface treatment | G- hot dip galvanizing (G is usually omitted); P-painting; U-untreated. |

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% |
Characteristics:
light weight, high bearing capacity, safe , skid-proof, easily fixed and dismantled, economical ,long life and durable, ventilated and penetration of light, easily to be cleaned, beautiful in appearance.

Applications of Hot dip galvanised HDG Heavy Duty Steel Bar Grating:
Galvanizing steel grating / grille / grate is widely used in the platform, corridor, bridge, well covers, stairs,fencing for petroleum, chemical, power plant, waste treatment plant, civil engineering projects and environmental projects.
Packing Details : In bundle, then fixed by steel belt as the general export package and we also could pack it according to customers' requirement.
Delivery Details : within 7-20 work days after confirmation.
Q: WHY SHOULD I CHOOSE YOU?
A: Choose happens because of quality,then price, we can give you both. Additionally, we can also offer professional products inquiry, products knowledge train( for agents), smooth goods delivery, excellent customer solution proposals.
Our service formula:good quality + good price + good service = Customer's trust
Q: HOW LONG IS YOUR DELIVERY TIME?
A: Generally it is 10 days if the goods are in stock. or it is 30 days if the goods are not in stock, it is according to quantity.
Q: DO YOU PROVIDE SAMPLES ? IS IT FREE OR EXTRA ?
A: Yes, we could offer the sample for free charge but do not pay the cost of freight.