We have obtained wide recognition and generous returns, and the Metal Grate Stairs, Platform And Walkway Grating, Mild Steel Grating share in the domestic and foreign markets is growing rapidly. We set up the enterprise culture system and take the enterprise culture as the carrier and entry point of quality management. Our company has established long-term and stable cooperative relations with many retailers and agents. We provide you with high-quality and considerate service, make progress hand in hand with customers, and strive to realize the enterprise dream of 'quality creates legend, integrity makes future'! We can automatically determine whether the products are qualified or not in any stage of production process and eliminate the defective products.
The heavy duty bar grating is resistance welded to ensure maximum strength, durability, and safety. And it can withstand repeatedly heavy loads. We provide heavy duty carbon steel grating and heavy duty stainless steel grating to meet customer needs. The heavy duty grating is considered to be ideal grids for heavy-duty areas such as highways, parking lots, loading docks, ramps, airports, truck and bus terminals, buses, freight stations, subways and industrial plants.
The Specification is As Follows:
* Standard Widths: 2′, 3′, and 4′ in 20′ lengths.
* Standard bearing bars: 1/4″, 5/16″, and 3/8″ thick.
* Bars range from 1″ to 8″ deep.

Main Features
* High load-bearing capacity
* Good slip resistance
* Easy to install and remove
* Various surface treatments
Applications
* Machinery Protection – Can be used to protect machinery from being damaged by falling objects.
* Ventilation Grilles – Ensure the smooth flow of air.
* Stairs Treads – Provide good slip resistance.
* Fencing – Protect people and property from being damaged by falling objects.
* Handrails – Good load-bearing capacity and can be used as handrails.

Technical Parameters
15 Space (15/16") Load Table
Bearing Bar Size (inches) | Section Modulus Per Foot of Width | Moment of Inertia Per Foot of Width | Approx. Weight psf | Maximum Safe Span | ||||||
H-25 Load | H-20 Load | H-15 Load | Auto Traffic | 5 Ton Forklift | 3 Ton Forklift | 1 Ton Forklift | ||||
1x1/4 | 0.533 | 0.267 | 12.0 | 1'-1" | 1'-0" | 0'-10" | 1'-2" | 0'-8" | 0'-7" | 0'-8" |
1x5/16 | 0.667 | 0.333 | 14.7 | 1'-3" | 1'-2" | 1'-0" | 1'-5" | 0'-9" | 0'-8" | 0'-9" |
1x3/8 | 0.800 | 0.400 | 17.4 | 1'-4" | 1'-3" | 1'-1" | 1'-7" | 0'-10" | 0'-8" | 0'-11" |
1-1/4x1/4 | 0.833 | 0.521 | 14.7 | 1'-4" | 1'-3" | 1'-1" | 1'-8" | 0'-10" | 0'-9" | 0'-11" |
1-1/4x5/16 | 1.042 | 0.651 | 18.1 | 1'-6" | 1'-5" | 1'-3" | 1'-11" | 1'-0" | 0'-10" | 1'-1" |
1-1/4x3/8 | 1.250 | 0.781 | 21.5 | 1'-8" | 1'-6" | 1'-4" | 2'-1" | 1'-1" | 0'-11" | 1'-4" |
1-1/2x1/4 | 1.200 | 0.900 | 17.4 | 1'-8" | 1'-6" | 1'-4" | 2'-3" | 1'-1" | 0'-11" | 1'-3" |
1-1/2x5/16 | 1.500 | 1.125 | 21.5 | 1'-10" | 1'-8" | 1'-6" | 2'-6" | 1'-3" | 1'-1" | 1'-7" |
1-1/2x3/8 | 1.800 | 1.350 | 25.6 | 2'-0" | 1'-10" | 1'-8" | 2'-9" | 1'-4" | 1'-3" | 1'-10" |
1-3/4x1/4 | 1.633 | 1.429 | 20.2 | 1'-11" | 1'-9" | 1'-7" | 2'-10" | 1'-3" | 1'-2" | 1'-8" |
1-3/4x5/16 | 2.042 | 1.786 | 24.9 | 2'-2" | 2'-0" | 1'-10" | 3'-2" | 1'-6" | 1'-5" | 2'-1" |
1-3/4x3/8 | 2.450 | 2.144 | 29.7 | 2'-5" | 2'-3" | 2'-1" | 3'-6" | 1'-9" | 1'-8" | 2'-6" |
2x1/4 | 2.133 | 2.133 | 22.9 | 2'-3" | 2'-0" | 1'-10" | 3'-6" | 1'-7" | 1'-5" | 2'-2" |
2x5/16 | 2.667 | 2.667 | 28.3 | 2'-6" | 2'-4" | 2'-2" | 3'-11" | 1'-10" | 1'-9" | 2'-8" |
2x3/8 | 3.200 | 3.200 | 33.8 | 2'-10" | 2'-8" | 2'-6" | 4'-3" | 2'-1" | 2'-1" | 3'-2" |
2-1/4x1/4 | 2.700 | 3.038 | 25.6 | 2'-7" | 2'-4" | 2'-2" | 4'-2" | 1'-10" | 1'-9" | 2'-8" |
2-1/4x5/16 | 3.375 | 3.797 | 31.7 | 2'-11" | 2'-9" | 2'-7" | 4'-5" | 2'-2" | 2'-2" | 3'-4" |
2-1/4x3/8 | 4.050 | 4.556 | 37.8 | 3'-4" | 3'-2" | 3'-0" | 4'-9" | 2'-7" | 2'-6" | 3'-11" |
2-1/2x1/4 | 3.333 | 4.167 | 28.3 | 2'-11" | 2'-9" | 2'-7" | 4'-7" | 2'-2" | 2'-2" | 3'-4" |
2-1/2x5/16 | 4.167 | 5.208 | 35.1 | 3'-5" | 3'-3" | 3'-1" | 4'-11" | 2'-8" | 2'-7" | 4'-1" |
2-1/2x3/8 | 5.000 | 6.250 | 41.9 | 3'-10" | 3'-9" | 3'-7" | 5'-3" | 3'-1" | 3'-1" | 4'-5" |
3x1/4 | 4.800 | 7.200 | 33.8 | 3'-9" | 3'-7" | 3'-6" | 5'-6" | 3'-0" | 3'-0" | 4'-8" |
3x5/16 | 6.000 | 9.000 | 41.9 | 4'-5" | 4'-4" | 4'-2" | 5'-11" | 3'-7" | 3'-8" | 5'-0" |
3x3/8 | 7.200 | 10.800 | 50.1 | 4'-8" | 4'-7" | 4'-7" | 6'-4" | 4'-3" | 4'-4" | 5'-4" |
3-1/2x1/4 | 6.533 | 11.433 | 39.2 | 4'-9" | 4'-7" | 4'-6" | 6'-5" | 3'-11" | 3'-11" | 5'-5" |
3-1/2x5/16 | 8.167 | 14.292 | 48.7 | 5'-1" | 5'-1" | 5'-1" | 6'-11" | 4'-9" | 4'-10" | 5'-10" |
3-1/2x3/8 | 9.800 | 17.150 | 58.2 | 5'-5" | 5'-4" | 5'-5" | 7'-4" | 5'-2" | 5'-3" | 6'-3" |
4x1/4 | 8.533 | 17.067 | 44.6 | 5'-4" | 5'-4" | 5'-4" | 7'-4" | 4'-11" | 5'-1" | 6'-3" |
4x5/16 | 10.667 | 21.333 | 55.5 | 5'-9" | 5'-9" | 5'-9" | 7'-11" | 5'-6" | 5'-8" | 6'-8" |
4x3/8 | 12.800 | 25.600 | 66.4 | 6'-1" | 6'-1" | 6'-2" | 8'-5" | 5'-11" | 6'-0" | 7'-2" |
4-1/2x1/4 | 10.800 | 24.300 | 50.1 | 6'-0" | 6'-0" | 6'-0" | 8'-3" | 5'-9" | 5'-11" | 7'-0" |
4-1/2x5/16 | 13.500 | 30.375 | 62.3 | 6'-6" | 6'-6" | 6'-6" | 8'-11" | 6'-3" | 6'-4" | 7'-7" |
4-1/2x3/8 | 16.200 | 36.450 | 74.6 | 6'-10" | 6'-10" | 6'-11" | 9'-6" | 6'-7" | 6'-9" | 8'-0" |
5x1/4 | 13.333 | 33.333 | 55.5 | 6'-8" | 6'-8" | 6'-9" | 9'-2" | 6'-5" | 6'-7" | 7'-9" |
5x3/8 | 20.000 | 50.000 | 82.7 | 7'-7" | 7'-8" | 7'-8" | 10'-6" | 7'-4" | 7'-6" | 8'-11" |
5x1/2 | 26.667 | 66.667 | 109.9 | 8'-4" | 8'-5" | 8'-5" | 11'-7" | 8'-1" | 8'-3" | 9'-10" |
6x1/4 | 19.200 | 57.600 | 66.4 | 8'-0" | 8'-0" | 8'-1" | 11'-1" | 7'-8" | 7'-10" | 9'-4" |
6x3/8 | 28.800 | 86.400 | 99.0 | 9'-1" | 9'-2" | 9'-2" | 12'-8" | 8'-10" | 9'-0" | 10'-9" |
6x1/2 | 38.400 | 115.200 | 131.7 | 10'-0" | 10'-1" | 10'-2" | 13'-11" | 9'-9" | 9'-11" | 11'-10" |
7x1/4 | 26.133 | 91.467 | 77.3 | 9'-3" | 9'-4" | 9'-5" | 12'-11" | 9'-0" | 9'-2" | 10'-11" |
7x3/8 | 39.200 | 137.200 | 115.4 | 10'-7" | 10'-8" | 10'-9" | 14'-9" | 10'-4" | 10'-6" | 12'-6" |
7x1/2 | 52.267 | 182.933 | 153.4 | 11'-8" | 11'-9" | 11'-10" | 16'-3" | 11'-4" | 11'-7" | 13'-9" |
19 Space (1-3/16") Load Table
Bearing Bar Size (inches) | Section Modulus Per Foot of Width | Moment of Inertia Per Foot of Width | Approx. Weight psf | Maximum Safe Span | ||||||
H-25 Load | H-20 Load | H-15 Load | Auto Traffic | 5 Ton Forklift | 3 Ton Forklift | 1 Ton Forklift | ||||
1x1/4 | 0.421 | 0.211 | 9.7 | 1'-0" | 0'-10" | 0'-9" | 1'-0" | 0'-7" | 0'-6" | 0'-7" |
1x5/16 | 0.526 | 0.263 | 11.9 | 1'-1" | 1'-0" | 0'-10" | 1'-2" | 0'-8" | 0'-7" | 0'-8" |
1x3/8 | 0.632 | 0.316 | 14.0 | 1'-2" | 1'-1" | 0'-11" | 1'-4" | 0'-9" | 0'-8" | 0'-9" |
1-1/4x1/4 | 0.658 | 0.411 | 11.9 | 1'-3" | 1'-1" | 1'-0" | 1'-5" | 0'-9" | 0'-8" | 0'-10" |
1-1/4x5/16 | 0.822 | 0.514 | 14.5 | 1'-4" | 1'-3" | 1'-1" | 1'-8" | 0'-10" | 0'-9" | 1'-0" |
1-1/4x3/8 | 0.987 | 0.617 | 17.2 | 1'-6" | 1'-4" | 1'-2" | 1'-11" | 1'-0" | 0'-10" | 1'-2" |
1-1/2x1/4 | 0.947 | 0.711 | 14.0 | 1'-6" | 1'-4" | 1'-2" | 1'-11" | 0'-11" | 0'-10" | 1'-1" |
1-1/2x5/16 | 1.184 | 0.888 | 17.2 | 1'-8" | 1'-6" | 1'-4" | 2'-3" | 1'-1" | 0'-11" | 1'-4" |
1-1/2x3/8 | 1.421 | 1.066 | 20.4 | 1'-10" | 1'-8" | 1'-6" | 2'-6" | 1'-2" | 1'-1" | 1'-7" |
1-3/4x1/4 | 1.289 | 1.128 | 16.2 | 1'-9" | 1'-7" | 1'-5" | 2'-5" | 1'-2" | 1'-0" | 1'-5" |
1-3/4x5/16 | 1.612 | 1.410 | 19.9 | 1'-11" | 1'-9" | 1'-7" | 2'-11" | 1'-4" | 1'-3" | 1'-9" |
1-3/4x3/8 | 1.934 | 1.692 | 23.7 | 2'-2" | 1'-11" | 1'-9" | 3'-2" | 1'-6" | 1'-5" | 2'-1" |
2x1/4 | 1.684 | 1.684 | 18.3 | 2'-0" | 1'-10" | 1'-8" | 3'-1" | 1'-4" | 1'-3" | 1'-10" |
2x5/16 | 2.105 | 2.105 | 22.6 | 2'-3" | 2'-1" | 1'-11" | 3'-6" | 1'-7" | 1'-6" | 2'-4" |
2x3/8 | 2.526 | 2.526 | 26.9 | 2'-6" | 2'-4" | 2'-2" | 3'-10" | 1'-10" | 1'-9" | 2'-9" |
2-1/4x1/4 | 2.132 | 2.398 | 20.4 | 2'-3" | 2'-1" | 1'-11" | 3'-9" | 1'-7" | 1'-6" | 2'-4" |
2-1/4x5/16 | 2.664 | 2.998 | 25.3 | 2'-7" | 2'-5" | 2'-3" | 4'-2" | 1'-11" | 1'-10" | 2'-11" |
2-1/4x3/8 | 3.197 | 3.597 | 30.1 | 2'-10" | 2'-8" | 2'-7" | 4'-5" | 2'-2" | 2'-2" | 3'-5" |
2-1/2x1/4 | 2.632 | 3.289 | 22.6 | 2'-6" | 2'-4" | 2'-3" | 4'-4" | 1'-10" | 1'-10" | 2'-10" |
2-1/2x5/16 | 3.289 | 4.112 | 28.0 | 2'-11" | 2'-9" | 2'-7" | 4'-8" | 2'-3" | 2'-3" | 3'-6" |
2-1/2x3/8 | 3.947 | 4.934 | 33.3 | 3'-4" | 3'-2" | 3'-0" | 4'-11" | 2'-7" | 2'-7" | 4'-2" |
3x1/4 | 3.789 | 5.684 | 26.9 | 3'-3" | 3'-1" | 2'-11" | 5'-2" | 2'-6" | 2'-6" | 4'-1" |
3x5/16 | 4.737 | 7.105 | 33.3 | 3'-9" | 3'-7" | 3'-6" | 5'-7" | 3'-0" | 3'-1" | 4'-9" |
3x3/8 | 5.684 | 8.526 | 39.8 | 4'-4" | 4'-2" | 4'-1" | 5'-11" | 3'-7" | 3'-8" | 5'-1" |
3-1/2x1/4 | 5.158 | 9.026 | 31.2 | 4'-0" | 3'-10" | 3'-9" | 6'-0" | 3'-3" | 3'-4" | 5'-2" |
3-1/2x5/16 | 6.447 | 11.283 | 38.7 | 4'-9" | 4'-8" | 4'-7" | 6'-6" | 4'-0" | 4'-1" | 5'-7" |
3-1/2x3/8 | 7.737 | 13.539 | 46.2 | 5'-0" | 5'-0" | 5'-0" | 6'-11" | 4'-8" | 4'-10" | 5'-11" |
4x1/4 | 6.737 | 13.474 | 35.5 | 4'-11" | 4'-10" | 4'-9" | 6'-11" | 4'-2" | 4'-3" | 5'-11" |
4x5/16 | 8.421 | 16.842 | 44.1 | 5'-5" | 5'-5" | 5'-5" | 7'-5" | 5'-1" | 5'-3" | 6'-4" |
4x3/8 | 10.105 | 20.211 | 52.7 | 5'-8" | 5'-8" | 5'-9" | 7'-11" | 5'-6" | 5'-8" | 6'-9" |
4-1/2x1/4 | 8.526 | 19.184 | 39.8 | 5'-7" | 5'-7" | 5'-8" | 7'-9" | 5'-1" | 5'-4" | 6'-8" |
4-1/2x5/16 | 10.658 | 30.375 | 49.4 | 6'-0" | 6'-0" | 6'-1" | 8'-4" | 5'-10" | 6'-0" | 7'-2" |
4-1/2x3/8 | 12.789 | 28.776 | 59.1 | 6'-5" | 6'-5" | 6'-5" | 8'-11" | 6'-2" | 6'-4" | 7'-7" |
5x1/4 | 10.526 | 26.316 | 44.1 | 6'-3" | 6'-3" | 6'-3" | 8'-8" | 6'-0" | 6'-2" | 7'-5" |
5x3/8 | 15.789 | 39.474 | 65.5 | 7'-1" | 7'-1" | 7'-2" | 9'-11" | 6'-11" | 7'-1" | 8'-6" |
5x1/2 | 21.053 | 52.632 | 87.0 | 7'-10" | 7'-10" | 7'-11" | 10'-11" | 7'-7" | 7'-9" | 9'-4" |
6x1/4 | 15.158 | 45.474 | 52.7 | 7'-5" | 7'-5" | 7'-6" | 10'-4" | 7'-3" | 7'-5" | 8'-11" |
6x3/8 | 22.737 | 68.211 | 78.4 | 8'-6" | 8'-6" | 8'-7" | 11'-10" | 8'-3" | 8'-6" | 10'-2" |
6x1/2 | 30.316 | 90.947 | 104.2 | 9'-4" | 9'-4" | 9'-5" | 13'-1" | 9'-1" | 9'-4" | 11'-2" |
7x1/4 | 20.632 | 72.211 | 61.2 | 8'-8" | 8'-8" | 8'-9" | 12'-1" | 8'-5" | 8'-8" | 10'-4" |
7x3/8 | 30.947 | 108.316 | 91.3 | 9'-11" | 9'-11" | 10'-0" | 13'-10" | 9'-8" | 9'-11" | 11'-10" |
7x1/2 | 41.263 | 144.421 | 121.4 | 10'-10" | 10'-11" | 11'-0" | 15'-3" | 10'-7" | 10'-11" | 13'-1" |
22 Space (1-3/8") Load Table
Bearing Bar Size (inches) | Section Modulus Per Foot of Width | Moment of Inertia Per Foot of Width | Approx. Weight psf | Maximum Safe Span | ||||||
H-25 Load | H-20 Load | H-15 Load | Auto Traffic | 5 Ton Forklift | 3 Ton Forklift | 1 Ton Forklift | ||||
1x1/4 | 0.364 | 0.182 | 8.5 | 0'-11" | 0'-10" | 0'-9" | 0'-11" | 0'-7" | 0'-6" | 0'-6" |
1x5/16 | 0.455 | 0.227 | 10.4 | 1'-0" | 0'-11" | 0'-10" | 1'-1" | 0'-8" | 0'-6" | 0'-7" |
1x3/8 | 0.545 | 0.273 | 12.2 | 1'-1" | 1'-0" | 0'-11" | 1'-3" | 0'-9" | 0'-7" | 0'-9" |
1-1/4x1/4 | 0.568 | 0.355 | 10.4 | 1'-2" | 1'-0" | 0'-11" | 1'-4" | 0'-9" | 0'-7" | 0'-9" |
1-1/4x5/16 | 0.710 | 0.444 | 12.7 | 1'-3" | 1'-2" | 1'-0" | 1'-6" | 0'-10" | 0'-8" | 0'-11" |
1-1/4x3/8 | 0.852 | 0.533 | 15.0 | 1'-5" | 1'-3" | 1'-1" | 1'-9" | 0'-11" | 0'-9" | 1'-1" |
1-1/2x1/4 | 0.818 | 0.614 | 12.2 | 1'-5" | 1'-3" | 1'-1" | 1'-9" | 0'-11" | 0'-9" | 1'-0" |
1-1/2x5/16 | 1.023 | 0.767 | 15.0 | 1'-7" | 1'-5" | 1'-3" | 2'-1" | 1'-0" | 0'-11" | 1'-3" |
1-1/2x3/8 | 1.227 | 0.920 | 17.8 | 1'-8" | 1'-6" | 1'-4" | 2'-5" | 1'-1" | 1'-0" | 1'-6" |
1-3/4x1/4 | 1.114 | 0.974 | 14.1 | 1'-8" | 1'-6" | 1'-3" | 2'-3" | 1'-1" | 0'-11" | 1'-4" |
1-3/4x5/16 | 1.392 | 1.218 | 17.3 | 1'-10" | 1'-8" | 1'-6" | 2'-8" | 1'-2" | 1'-1" | 1'-8" |
1-3/4x3/8 | 1.670 | 1.462 | 20.6 | 2'-0" | 1'-10" | 1'-8" | 3'-0" | 1'-4" | 1'-3" | 1'-11" |
2x1/4 | 1.455 | 1.455 | 16.0 | 1'-10" | 1'-8" | 1'-6" | 2'-10" | 1'-3" | 1'-2" | 1'-9" |
2x5/16 | 1.818 | 1.818 | 19.7 | 2'-1" | 1'-11" | 1'-9" | 3'-4" | 1'-5" | 1'-5" | 2'-1" |
2x3/8 | 2.182 | 2.182 | 23.4 | 2'-4" | 2'-1" | 2'-0" | 3'-8" | 1'-8" | 1'-7" | 2'-6" |
2-1/4x1/4 | 1.841 | 2.071 | 17.8 | 2'-1" | 1'-11" | 1'-9" | 3'-5" | 1'-6" | 1'-5" | 2'-2" |
2-1/4x5/16 | 2.301 | 2.589 | 22.0 | 2'-4" | 2'-2" | 2'-0" | 4'-0" | 1'-9" | 1'-8" | 2'-8" |
2-1/4x3/8 | 2.761 | 3.107 | 26.2 | 2'-8" | 2'-6" | 2'-4" | 4'-3" | 2'-0" | 2'-0" | 3'-2" |
2-1/2x1/4 | 2.273 | 2.841 | 19.7 | 2'-4" | 2'-2" | 2'-0" | 4'-2" | 1'-8" | 1'-8" | 2'-7" |
2-1/2x5/16 | 2.841 | 3.551 | 24.3 | 2'-8" | 2'-6" | 2'-5" | 4'-6" | 2'-0" | 2'-0" | 3'-3" |
2-1/2x3/8 | 3.409 | 4.261 | 28.9 | 3'-0" | 2'-10" | 2'-9" | 4'-9" | 2'-4" | 2'-4" | 3'-10" |
3x1/4 | 3.273 | 4.909 | 23.4 | 2'-11" | 2'-9" | 2'-8" | 5'-0" | 2'-3" | 2'-3" | 3'-8" |
3x5/16 | 4.091 | 6.136 | 28.9 | 3'-5" | 3'-3" | 3'-2" | 5'-4" | 2'-9" | 2'-9" | 4'-7" |
3x3/8 | 4.909 | 7.364 | 34.5 | 3'-11" | 3'-9" | 3'-8" | 5'-8" | 3'-2" | 3'-4" | 4'-11" |
3-1/2x1/4 | 4.455 | 7.795 | 27.1 | 3'-8" | 3'-6" | 3'-5" | 5'-10" | 2'-11" | 3'-0" | 5'-0" |
3-1/2x5/16 | 5.568 | 9.744 | 33.6 | 4'-4" | 4'-2" | 4'-1" | 6'-3" | 3'-7" | 3'-8" | 5'-5" |
3-1/2x3/8 | 6.682 | 11.693 | 40.1 | 4'-10" | 4'-10" | 4'-10" | 6'-8" | 4'-2" | 4'-5" | 5'-9" |
4x1/4 | 5.818 | 11.636 | 30.8 | 4'-5" | 4'-4" | 4'-3" | 6'-8" | 3'-9" | 3'-10" | 5'-9" |
4x5/16 | 7.273 | 14.545 | 38.2 | 5'-2" | 5'-2" | 5'-2" | 7'-2" | 4'-6" | 4'-9" | 6'-2" |
4x3/8 | 8.727 | 17.455 | 45.6 | 5'-6" | 5'-6" | 5'-6" | 7'-7" | 5'-3" | 5'-5" | 6'-7" |
4-1/2x1/4 | 7.364 | 16.568 | 34.5 | 5'-4" | 5'-3" | 5'-3" | 7'-6" | 4'-7" | 4'-10" | 6'-5" |
4-1/2x5/16 | 9.205 | 20.710 | 42.8 | 5'-9" | 5'-9" | 5'-10" | 8'-1" | 5'-7" | 5'-9" | 6'-11" |
4-1/2x3/8 | 11.045 | 24.852 | 51.2 | 6'-2" | 6'-2" | 6'-2" | 8'-7" | 5'-11" | 6'-1" | 7'-5" |
5x1/4 | 9.091 | 22.727 | 38.2 | 5'-11" | 6'-0" | 6'-0" | 8'-4" | 5'-7" | 5'-11" | 7'-2" |
5x3/8 | 13.636 | 34.091 | 56.8 | 6'-9" | 6'-10" | 6'-10" | 9'-6" | 6'-7" | 6'-10" | 8'-3" |
5x1/2 | 18.182 | 45.455 | 75.3 | 7'-6" | 7'-6" | 7'-7" | 10'-6" | 7'-3" | 7'-6" | 9'-1" |
6x1/4 | 13.091 | 39.273 | 45.6 | 7'-1" | 7'-2" | 7'-2" | 10'-0" | 6'-11" | 7'-2" | 8'-7" |
6x3/8 | 19.636 | 58.909 | 67.9 | 8'-1" | 8'-2" | 8'-3" | 11'-5" | 7'-11" | 8'-2" | 9'-10" |
6x1/2 | 26.182 | 78.545 | 90.1 | 8'-11" | 9'-0" | 9'-1" | 12'-7" | 8'-9" | 9'-0" | 10'-10" |
7x1/4 | 17.818 | 62.364 | 53.1 | 8'-3" | 8'-4" | 8'-5" | 11'-8" | 8'-1" | 8'-4" | 10'-1" |
7x3/8 | 26.727 | 93.545 | 79.0 | 9'-5" | 9'-6" | 9'-7" | 13'-4" | 9'-3" | 9'-6" | 11'-6" |
7x1/2 | 35.636 | 124.727 | 105.0 | 10'-5" | 10'-6" | 10'-7" | 14'-8" | 10'-2" | 10'-6" | 12'-8" |
30 Space (1-7/8") Load Table
Bearing Bar Size (inches) | Section Modulus Per Foot of Width | Moment of Inertia Per Foot of Width | Approx. Weight psf | Maximum Safe Span | ||||||
H-25 Load | H-20 Load | H-15 Load | Auto Traffic | 5 Ton Forklift | 3 Ton Forklift | 1 Ton Forklift | ||||
1x1/4 | 0.267 | 0.133 | 6.6 | 0'-9" | 0'-9" | 0'-8" | 0'-10" | 0'-6" | 0'-5" | 0'-6" |
1x5/16 | 0.333 | 0.167 | 7.9 | 0'-11" | 0'-10" | 0'-8" | 0'-11" | 0'-7" | 0'-6" | 0'-7" |
1x3/8 | 0.400 | 0.200 | 9.3 | 1'-0" | 0'-11" | 0'-9" | 1'-1" | 0'-8" | 0'-6" | 0'-8" |
1-1/4x1/4 | 0.417 | 0.260 | 7.9 | 1'-0" | 0'-11" | 0'-10" | 1'-1" | 0'-8" | 0'-6" | 0'-8" |
1-1/4x5/16 | 0.521 | 0.326 | 9.6 | 1'-1" | 1'-0" | 0'-11" | 1'-3" | 0'-9" | 0'-7" | 0'-9" |
1-1/4x3/8 | 0.625 | 0.391 | 11.3 | 1'-3" | 1'-1" | 1'-0" | 1'-6" | 0'-10" | 0'-8" | 0'-11" |
1-1/2x1/4 | 0.600 | 0.450 | 9.3 | 1'-2" | 1'-1" | 1'-0" | 1'-5" | 0'-9" | 0'-8" | 0'-11" |
1-1/2x5/16 | 0.750 | 0.563 | 11.3 | 1'-4" | 1'-3" | 1'-1" | 1'-9" | 0'-10" | 0'-9" | 1'-1" |
1-1/2x3/8 | 0.900 | 0.675 | 13.4 | 1'-6" | 1'-4" | 1'-2" | 2'-0" | 1'-0" | 0'-10" | 1'-3" |
1-3/4x1/4 | 0.817 | 0.715 | 10.6 | 1'-5" | 1'-3" | 1'-2" | 1'-10" | 0'-11" | 0'-10" | 1'-2" |
1-3/4x5/16 | 1.021 | 0.893 | 13.0 | 1'-7" | 1'-5" | 1'-3" | 2'-2" | 1'-0" | 0'-11" | 1'-5" |
1-3/4x3/8 | 1.225 | 1.072 | 15.4 | 1'-9" | 1'-7" | 1'-5" | 2'-7" | 1'-2" | 1'-1" | 1'-8" |
2x1/4 | 1.067 | 1.067 | 12.0 | 1'-7" | 1'-6" | 1'-4" | 2'-3" | 1'-1" | 1'-0" | 1'-6" |
2x5/16 | 1.333 | 1.333 | 14.7 | 1'-10" | 1'-8" | 1'-6" | 2'-9" | 1'-3" | 1'-2" | 1'-10" |
2x3/8 | 1.600 | 1.600 | 17.4 | 2'-0" | 1'-10" | 1'-8" | 3'-3" | 1'-5" | 1'-4" | 2'-2" |
2-1/4x1/4 | 1.350 | 1.519 | 13.4 | 1'-10" | 1'-8" | 1'-6" | 2'-10" | 1'-3" | 1'-2" | 1'-10" |
2-1/4x5/16 | 1.688 | 1.898 | 16.4 | 2'-0" | 1'-10" | 1'-9" | 3'-5" | 1'-5" | 1'-5" | 2'-3" |
2-1/4x3/8 | 2.025 | 2.278 | 19.5 | 2'-3" | 2'-1" | 1'-11" | 3'-11" | 1'-8" | 1'-8" | 2'-8" |
2-1/2x1/4 | 1.667 | 2.083 | 14.7 | 2'-0" | 1'-10" | 1'-8" | 3'-5" | 1'-5" | 1'-5" | 2'-3" |
2-1/2x5/16 | 2.083 | 2.604 | 18.1 | 2'-3" | 2'-1" | 2'-0" | 4'-2" | 1'-8" | 1'-8" | 2'-9" |
2-1/2x3/8 | 2.500 | 3.125 | 21.5 | 2'-6" | 2'-5" | 2'-3" | 4'-5" | 1'-11" | 2'-0" | 3'-3" |
3x1/4 | 2.400 | 3.600 | 17.4 | 2'-6" | 2'-4" | 2'-2" | 4'-7" | 1'-11" | 1'-11" | 3'-2" |
3x5/16 | 3.000 | 4.500 | 21.5 | 2'-10" | 2'-8" | 2'-7" | 5'-0" | 2'-3" | 2'-4" | 3'-11" |
3x3/8 | 3.600 | 5.400 | 25.6 | 3'-3" | 3'-1" | 3'-0" | 5'-3" | 2'-7" | 2'-9" | 4'-8" |
3-1/2x1/4 | 3.267 | 5.717 | 20.2 | 3'-0" | 2'-10" | 2'-9" | 5'-5" | 2'-5" | 2'-6" | 4'-3" |
3-1/2x5/16 | 4.083 | 7.146 | 24.9 | 3'-6" | 3'-5" | 3'-4" | 5'-10" | 2'-11" | 3'-1" | 5'-1" |
3-1/2x3/8 | 4.900 | 8.575 | 29.7 | 4'-0" | 3'-11" | 3'-10" | 6'-2" | 3'-5" | 3'-7" | 5'-5" |
4x1/4 | 4.267 | 8.533 | 22.9 | 3'-7" | 3'-6" | 3'-7" | 6'-2" | 3'-0" | 3'-2" | 5'-5" |
4x5/16 | 5.333 | 10.667 | 28.3 | 4'-1" | 4'-2" | 4'-2" | 6'-8" | 3'-8" | 3'-11" | 5'-10" |
4x3/8 | 6.400 | 12.800 | 33.8 | 4'-11" | 4'-10" | 4'-10" | 7'-1" | 4'-4" | 4'-8" | 6'-2" |
4-1/2x1/4 | 5.400 | 12.150 | 25.6 | 4'-4" | 4'-3" | 4'-2" | 6'-11" | 3'-8" | 3'-11" | 6'-1" |
4-1/2x5/16 | 6.750 | 15.188 | 31.7 | 5'-2" | 5'-1" | 5'-1" | 7'-6" | 4'-6" | 4'-10" | 6'-7" |
4-1/2x3/8 | 8.100 | 18.225 | 37.8 | 5'-7" | 5'-7" | 5'-8" | 7'-11" | 5'-4" | 5'-8" | 7'-0" |
5x1/4 | 6.667 | 16.667 | 28.3 | 5'-1" | 5'-0" | 5'-0" | 7'-8" | 4'-6" | 4'-10" | 6'-9" |
5x3/8 | 10.000 | 25.000 | 41.9 | 6'-3" | 6'-3" | 6'-4" | 8'-10" | 6'-1" | 6'-4" | 7'-9" |
5x1/2 | 13.333 | 33.333 | 55.5 | 6'-10" | 6'-10" | 6'-11" | 9'-8" | 6'-9" | 7'-0" | 8'-7" |
6x1/4 | 9.600 | 28.800 | 33.8 | 6'-6" | 6'-6" | 6'-7" | 9'-3" | 6'-3" | 6'-8" | 8'-2" |
6x3/8 | 14.400 | 43.200 | 50.1 | 7'-5" | 7'-6" | 7'-7" | 10'-7" | 7'-4" | 7'-7" | 9'-4" |
6x1/2 | 19.200 | 57.600 | 66.4 | 8'-2" | 8'-3" | 8'-4" | 11'-8" | 8'-1" | 8'-5" | 10'-3" |
7x1/4 | 13.067 | 45.733 | 39.2 | 7'-7" | 7'-7" | 7'-9" | 10'-9" | 7'-6" | 7'-9" | 9'-6" |
7x3/8 | 19.600 | 68.600 | 58.2 | 8'-8" | 8'-8" | 8'-10" | 12'-4" | 8'-7" | 8'-11" | 10'-11" |
7x1/2 | 26.133 | 91.467 | 77.3 | 9'-6" | 9'-7" | 9'-9" | 13'-7" | 9'-5" | 9'-9" | 12'-0" |
38 Space (2-3/8") Load Table
Bearing Bar Size (inches) | Section Modulus Per Foot of Width | Moment of Inertia Per Foot of Width | Approx. Weight psf | Maximum Safe Span | ||||||
H-25 Load | H-20 Load | H-15 Load | Auto Traffic | 5 Ton Forklift | 3 Ton Forklift | 1 Ton Forklift | ||||
1x1/4 | 0.211 | 0.105 | 5.4 | 0'-8" | 0'-8" | 0'-7" | 0'-9" | 0'-6" | 0'-5" | 0'-5" |
1x5/16 | 0.263 | 0.132 | 6.5 | 0'-10" | 0'-9" | 0'-8" | 0'-10" | 0'-6" | 0'-5" | 0'-6" |
1x3/8 | 0.316 | 0.158 | 7.6 | 0'-10" | 0'-10" | 0'-8" | 0'-11" | 0'-7" | 0'-6" | 0'-7" |
1-1/4x1/4 | 0.329 | 0.206 | 6.5 | 0'-11" | 0'-10" | 0'-9" | 1'-0" | 0'-8" | 0'-6" | 0'-7" |
1-1/4x5/16 | 0.411 | 0.257 | 7.8 | 1'-0" | 0'-11" | 0'-10" | 1'-2" | 0'-8" | 0'-7" | 0'-9" |
1-1/4x3/8 | 0.493 | 0.308 | 9.2 | 1'-1" | 1'-0" | 0'-11" | 1'-4" | 0'-9" | 0'-7" | 0'-10" |
1-1/2x1/4 | 0.474 | 0.355 | 7.6 | 1'-1" | 1'-0" | 0'-10" | 1'-3" | 0'-9" | 0'-7" | 0'-10" |
1-1/2x5/16 | 0.592 | 0.444 | 9.2 | 1'-3" | 1'-1" | 1'-0" | 1'-6" | 0'-10" | 0'-8" | 1'-0" |
1-1/2x3/8 | 0.711 | 0.533 | 10.8 | 1'-4" | 1'-3" | 1'-1" | 1'-9" | 0'-11" | 0'-9" | 1'-2" |
1-3/4x1/4 | 0.645 | 0.564 | 8.6 | 1'-4" | 1'-2" | 1'-0" | 1'-7" | 0'-10" | 0'-9" | 1'-0" |
1-3/4x5/16 | 0.806 | 0.705 | 10.5 | 1'-5" | 1'-3" | 1'-2" | 1'-11" | 0'-11" | 0'-10" | 1'-3" |
1-3/4x3/8 | 0.967 | 0.846 | 12.4 | 1'-7" | 1'-5" | 1'-3" | 2'-3" | 1'-1" | 1'-0" | 1'-6" |
2x1/4 | 0.842 | 0.842 | 9.7 | 1'-5" | 1'-4" | 1'-2" | 2'-0" | 1'-0" | 0'-11" | 1'-4" |
2x5/16 | 1.053 | 1.053 | 11.9 | 1'-8" | 1'-6" | 1'-4" | 2'-5" | 1'-1" | 1'-0" | 1'-7" |
2x3/8 | 1.263 | 1.263 | 14.0 | 1'-9" | 1'-8" | 1'-6" | 2'-10" | 1'-3" | 1'-2" | 1'-11" |
2-1/4x1/4 | 1.066 | 1.199 | 10.8 | 1'-8" | 1'-6" | 1'-4" | 2'-5" | 1'-1" | 1'-1" | 1'-8" |
2-1/4x5/16 | 1.332 | 1.499 | 13.2 | 1'-10" | 1'-8" | 1'-6" | 3'-0" | 1'-3" | 1'-3" | 2'-0" |
2-1/4x3/8 | 1.599 | 1.799 | 15.6 | 2'-0" | 1'-10" | 1'-8" | 3'-6" | 1'-5" | 1'-5" | 2'-5" |
2-1/2x1/4 | 1.316 | 1.645 | 11.9 | 1'-10" | 1'-8" | 1'-6" | 2'-11" | 1'-3" | 1'-3" | 2'-0" |
2-1/2x5/16 | 1.645 | 2.056 | 14.5 | 2'-1" | 1'-11" | 1'-9" | 3'-7" | 1'-6" | 1'-6" | 2'-6" |
2-1/2x3/8 | 1.974 | 2.467 | 17.2 | 2'-3" | 2'-1" | 2'-0" | 4'-2" | 1'-8" | 1'-9" | 2'-11" |
3x1/4 | 1.895 | 2.842 | 14.0 | 2'-2" | 2'-1" | 1'-11" | 4'-1" | 1'-8" | 1'-8" | 2'-10" |
3x5/16 | 2.368 | 3.553 | 17.2 | 2'-6" | 2'-4" | 2'-3" | 4'-9" | 1'-11" | 2'-0" | 3'-6" |
3x3/8 | 2.842 | 4.263 | 20.4 | 2'-10" | 2'-8" | 2'-7" | 5'-0" | 2'-3" | 2'-5" | 4'-2" |
3-1/2x1/4 | 2.579 | 4.513 | 16.2 | 2'-8" | 2'-6" | 2'-5" | 5'-1" | 2'-1" | 2'-2" | 3'-9" |
3-1/2x5/16 | 3.224 | 5.641 | 19.9 | 3'-1" | 2'-11" | 2'-10" | 5'-6" | 2'-6" | 2'-8" | 4'-8" |
3-1/2x3/8 | 3.868 | 6.770 | 23.7 | 3'-6" | 3'-4" | 3'-4" | 5'-10" | 2'-11" | 3'-2" | 5'-3" |
4x1/4 | 3.368 | 6.737 | 18.3 | 3'-2" | 3'-0" | 2'-11" | 5'-10" | 2'-7" | 2'-9" | 4'-11" |
4x5/16 | 4.211 | 8.421 | 22.6 | 3'-8" | 3'-7" | 3'-7" | 6'-3" | 3'-2" | 3'-5" | 5'-7" |
4x3/8 | 5.053 | 10.105 | 26.9 | 4'-3" | 4'-2" | 4'-2" | 6'-8" | 3'-8" | 4'-0" | 6'-0" |
4-1/2x1/4 | 4.263 | 9.592 | 20.4 | 3'-9" | 3'-7" | 3'-7" | 6'-7" | 3'-2" | 3'-5" | 5'-10" |
4-1/2x5/16 | 5.329 | 11.990 | 25.3 | 4'-5" | 4'-4" | 4'-4" | 7'-1" | 3'-11" | 4'-3" | 6'-4" |
4-1/2x3/8 | 6.395 | 14.388 | 30.1 | 5'-1" | 5'-0" | 5'-1" | 7'-6" | 4'-7" | 5'-0" | 6'-9" |
5x1/4 | 5.263 | 13.158 | 22.6 | 4'-4" | 4'-3" | 4'-3" | 7'-4" | 3'-10" | 4'-2" | 6'-6" |
5x3/8 | 7.895 | 19.737 | 33.3 | 5'-10" | 5'-10" | 5'-11" | 8'-4" | 5'-6" | 6'-0" | 7'-6" |
5x1/2 | 10.526 | 26.316 | 44.1 | 6'-5" | 6'-5" | 6'-6" | 9'-2" | 6'-4" | 6'-8" | 8'-3" |
6x1/4 | 7.579 | 22.737 | 26.9 | 5'-10" | 5'-10" | 5'-11" | 8'-9" | 5'-4" | 5'-11" | 7'-10" |
6x3/8 | 11.368 | 34.105 | 39.8 | 6'-11" | 7'-0" | 7'-1" | 10'-0" | 6'-11" | 7'-3" | 9'-0" |
6x1/2 | 15.158 | 45.474 | 52.7 | 7'-8" | 7'-8" | 7'-10" | 11'-1" | 7'-7" | 8'-0" | 9'-11" |
7x1/4 | 10.316 | 36.105 | 31.2 | 7'-1" | 7'-2" | 7'-3" | 10'-3" | 7'-1" | 7'-5" | 9'-2" |
7x3/8 | 15.474 | 54.158 | 46.2 | 8'-1" | 8'-2" | 8'-4" | 11'-8" | 8'-1" | 8'-5" | 10'-6" |
7x1/2 | 20.632 | 72.211 | 61.2 | 8'-11" | 9'-0" | 9'-2" | 12'-11" | 8'-11" | 9'-4" | 11'-6" |
We adhere to the tenet of 'Science and technology as the guide, quality for survival, management for development', and strive to provide customers with high-quality Haoyuan Steel Bar Grating for Heavy Duty Use solutions. In the future, our company will continue to overcome difficulties, tap potential and constantly update with determination. We will continue to create brilliance and achieve a new round of take-off with the spirit of "unity, dedication, hard work and enterprise".
Hot Tags: heavy duty bar grating, China, suppliers, manufacturers, factory, custom, for sale, Serrated Press-Locked Steel Grating, Serrated Grating, Steel Stair Steps, Serrated Surface Stair Tread, Open Steel Stair Treads, Anti slip Serrated Steel Grating











