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There are mainly four types bearing bars as belowing which are frequently used for steel gratings.
Here we mainly introduce the I bar gratings. Same as normal bearing bars, there are two type of the I bars, plain type I bar and serrated type I bar. The main advantage of I bar steel grating is it is with high strength – to- weight ratio.
1) Hot dip galvanized as per ASTM A123 or EN ISO 1461 or special requirement
2) Painted or Powder Coated
3) HDG plus painted/powder coated
Galvanized serrated bar grating size:
Pitch of Bearing bar | Cross-bar Pitch | Specification of bearing bar(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 | |
Pitch of Bearing bar | Cross-bar Pitch | Specification of bearing bar(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 |
Steel grating has light weight,large strength,bearing capacity,cost saving economy ,airy and light,modern style,beautiful appearance,anti-silo safety and easy to clean,easy to install,wear well and so on.
Steel grating is widely used in power factory,chemical factory,oil factory,steel factory,paper factory,machinery factory,cement factory,municipal works,sewage treatment pharmaceutical industry,food processing industries .Mainly used to make drain cover ,steel platform board,staircase stepping board,with ventilation lighting,heatoutput,deslip,explosion-proof properties.