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c.Common Specifications :
Flat Steel Space : 30mm , 40mm , 50 mm
Twisted Steel Space : 50mm , 100mm
Platform Steel Grating :303/30/100 ; 405/30/100
Stair Treads :255/30/100 ; 325/30 /100
Drainage Trench Cover :405/30/100 ; 505/30 /100 ; 255 /30/100 ; 325 /30 /100
d.Characteristics:
1.Light weight, high bearing capacity, safe , skid-proof, easily fixed and dismantled,
2.Economical ,long life and durable, ventilated and penetration of light,
easily to be cleaned, beautiful in appearance.