Tianjin Shunjinhua Machinery Manufacturing Co Ltd
+86-022-68900512
+86-022-68900512
+86-022-68900512
Galvanized Steel Grating
Steel grating are widely used in various plants at home and abroad, like power plants, chemical plants, oil refinery, iron and steel works, machine factories, paper mills,cement mills, hospitals and and food processing factories, tec.
Applications
-Rotation ways, channels, and platforms for pump rooms and engine rooms in various ships;
-flooring in various bridges such as railway bridge sidewalks, over-bridges across the street;
-platforms for oil extraction sites, car washing sites and air towers;
-fencings for car-parks, buildings and roads; drainage trench covers and drainage pit covers for highways.
-The steel grid with flat steel spacing of 30mm is the most widely used variety in the industrial field.In the series of commonly used steel grid plate, it has the strongest resistance to surface impact.
-flat steel spacing of 40mm steel grid for the most economical, the most portable varieties.In the case of the smallest span, is the most ideal choice.
-flat steel spacing of 40mm, bar spacing of 50mm steel grid plate is designed for mining applications and development of varieties, it solves the mineral splashdown on the plate, often designated for mining processing plants, transfer stations, crushing system plate.
Manufacturing process
Steel grating is made by the world first-class Italian ORSOGRIL equipment, which can arrange the bearing bar and cross bar in longitude and latitude order to certain distance. Cross bar is pressed into the bearing bar by high tension resistance weldingring which is controlled by computer. So we can produce high quality gratings with firm welding, smooth surface and high strength.
Surface process of grating
Hot-dipped Galvanizing
Normally, hot-dipped galvanizing will be carried out after end welding process. When the thickness of bearing bars is not less than 5mm, the weight of average Zinc Layer will not be less than 610g/m2.
When the thickness of bearing bars is less than 5mm, the weight of average Zinc Layer will not be less than 460g/m2. The quality and requirements after hot-dipped galvanizing are according to the standards of GB/T13912.
Specification in Guidance
| Cross Rod Pitch | load Bar Pitch | load Bar Specification(Width×Thickness) | |||||
| 20×3 | 25×3 | 32×3 | 40×3 | 20×5 | 25×5 | ||
| 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 | |
| 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 | |
| 60 | 50 | - | G253/60/50 | G253/60/50 | G403/60/50 | G205/60/50 | G255/60/50 |
| Cross Rod Pitch | load Bar Pitch | load Bar Specification(Width×Thickness) | |||||
| 32×5 | 40×5 | 45×5 | 50×5 | 55×5 | 60×5 | ||
| 30 | 100 | G325/30/100 | G405/30/100 | G455/30/100 | G505/30/100 | G555/30/100 | G605/30/100 |
| 50 | G325/30/50 | G405/30/50 | G455/30/50 | G505/30/50 | G555/30/50 | G605/30/50 | |
| 40 | 100 | G325/40/100 | G405/40/100 | G455/40/100 | G505/40/100 | G555/40/100 | G605/40/100 |
| 50 | G325/40/50 | G405/40/50 | G455/40/50 | G505/40/50 | G555/40/50 | G605/40/50 | |
| 60 | 50 | G325/60/50 | G405/60/50 | G455/60/50 | G505/60/50 | G555/60/50 | G605/60/50 |
Quality standards
Standard for steel grating |
Standard for steel material |
Standard for hot dipped galvanization |
|
China |
YB/T4001-1998 |
GB700-88 |
GB/T13912-92 |
USA |
ANSI/NAAMM(MBG531-88) |
ASTM(A36) |
ASTM(A123) |
UK |
BS4592-1987 |
BS4360(43A) |
BS729 |
AUSTRALIA |
AS1657-1985 |
AS3679 |
AS1650 |
Our Workshop
+86-022-68900512 
152 kilometers of national highway 104, east side of gaogaolou village, jinghai town, jinghai district, Tianjin,China Tianjin Shunjinhua Machinery Manufacturing Co Ltd
