Beijing Silk Road Enterprise Management Services Co.,LTD
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Hot Dipped Galvanized Heavy Duty Steel Grating 70mm x 6mm Bearing Bar
Welded Heavy Duty Gratings are designed to service applications subject to heavy rolling and static loads such as highways, plant floors, loading docks, inlet covers and airports. Since these conditions can range from light-duty forklifts to heavy-duty truck or aircraft traffic, heavy duty gratings are manufactured in a wide range of bar sizes and spacings. Our most popular products are described on the following pages.
Heavy duty gratings are manufactured in carbon steel and 300 series stainless steels. Carbon steel products are available bare (no finish), painted with manufacturers standard paint, or hot dip galvanized. Stainless steel products are available mill finish, commercially cleaned or electro-polished.
Table of Spacings
| 15-w-4 | Bearing Bars at 15/16" O.C. Cross Bars at 4" O.C. | 15-w-2 | Bearing Bars at 15/16" O.C. Cross Bars at 2" O.C. |
| 19-w-4 | Bearing Bars at 1-3/16" O.C. Cross Bars at 4" O.C. | 19-w-2 | Bearing Bars at 1-3/16" O.C. Cross Bars at 2" O.C. |
| 22-w-4 | Bearing Bars at 1-3/8" O.C. Cross Bars at 4" O.C. | 22-w-2 | Bearing Bars at 1-3/8" O.C. Cross Bars at 2" O.C. |
| 30-w-4 | Bearing Bars at 1-7/8" O.C. Cross Bars at 4" O.C. | 30-w-2 | Bearing Bars at 1-7/8" O.C. Cross Bars at 2" O.C. |
| 38-w-4 | Bearing Bars at 2-3/8" O.C. Cross Bars at 4" O.C. | 38-w-2 | Bearing Bars at 2-3/8" O.C. Cross Bars at 2" O.C. |
Heavy duty gratings are commonly subjected to shock and impact loads and it is highly recommended that all open ends be banded. The welded band bar helps distribute impact loads and minimizes distortion when subjected to repetitive traffic patterns. Banding details can be found under
Optional serrated bearing bars enhance skid resistance. Consider this surface for applications subject to the accumulation of liquids or lubricants or inclined grating installations.
| Maximum Traffic Conditions | Wheel Load (Ibs) (1/2 axle load +30% Impact)
| Load Distribution Parallel With Axle Perpendicular to Axle | |
| H-25 Truck Traffic 40000lb.Axle Load Dual Wheels Modified AASHTD H-25 | 26,000 | 2(C)+25" | 25" |
| H-20 Truck Traffic 32000lb.Axle Load Dual Wheels Modified AASHTD H-20 | 20,800 | 2(C)+20" | 20" |
| H-15 Truck Traffic 24000lb.Axle Load Single Wheels Modified AASHTD H-15 | 15,600 | 2(C)+15" | 15" |
| Automobile Automobile Traffic 6,322 Ib Vehicle 3,578 Ib.Load 60%Drive Axle Load | 3,861 | 2(C)+9" | 9" |
| 5Ton Forklift 10000 Ib.Cap.LiftTruck 14000Ib.Vehicle 24,000 Ib.Table Load 85% Drive Axle Load | 13,480 | 2(C)+11" | 11" |
| 3Ton Forklift 6,000 Ib.Cap.Lift Truck 9000Ib.Vehicle 15800 Ib.Table Load 85% Drive Axle Load | 8.730 | 2(C)+7" | 7" |
| 1Ton Forklift 2,000 Ib.Cap.Lift Truck 4200Ib.Vehicle 6200 Ib.Table Load 85% Drive Axle Load | 3,425 | 2(C)+4" | 4" |
