Product Details

Galvanized Flat Welded Open Steel Grating

Product Description

Brief Introduction

This galvanized steel grating is a welded steel grating product which is munufactured from steel strand and steel bar.And it always be used as a part of flooring,walkway,platform,grating deck.

We get two different designs regarding to the loading capacity, the gratings is theoretical and is based on a uniformly distributed load of 300 kg/m² (3KPa)

Light and Medium Duty Steel Grating --- Bearing bar spacing is 30 mm
Heavy Duty Steel Grating --- Bearing bar spacing is 40 mm

Application

Flooring
Strair trends
sun shades
Drain covers
Security screens
Manhole covers
Mezzanine flooring
Earth mats
Shelving
Stanchions

Specification

Light and Medium Duty Steel Grating --- Bearing bar spacing is 30 mm

Model	Bearing bar	Serrated Bar Factors
Model	Bearing bar	Stress	Deflection
G193/30	19 x 3	—	—
G253/30	25 x 3	0.88	1.21
G255/30	25 x 5	0.82	1.30
G323/30	32 x 3	0.91	1.16
G325/30	32 x 5	0.84	1.25
G445/30	44 x 5	0.89	1.16
G505/30	50 x 5	0.92	1.12
G657/30	65 x 7	—	—
G757/30	75 x 7	—	—

Heavy Duty Steel Grating --- Bearing bar spacing is 40 mm

Model	Bearing Bar Size	Serrated Bar Factors
Model	Bearing Bar Size	Stress	Deflection
G253/40	25 x 3	0.88	1.21
G255/40	25 x 5	0.82	1.30
G323/40	32 x 3	0.91	1.16
G325/40	32 x 5	0.84	1.25
G445/40	44 x 5	0.89	1.16
G505/40	50 x 5	0.92	1.12
G657/40	65 x 7	—	—
G757/40	75 x 7	—	—

The shaped area of the table indicates grating with deflection less than span / 300 mm

If serrated bar grating is selected,use the factors S and D to calculate stress and deflection

For uniformly distributed loads other than 30 kg/m² (3KPa) grating stress and deflection ca be caculated using the factor shown in the following table

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