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1.full range in type and dimention 2.applicable steel equipment 3.excellent quality of steel grating 4.reasonable price

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Detail description of stair tread

Plain steel grating is one of the most widely used steel gratings, the bearing bar comes in the form of a plain surface flat bar commonly used for platforms, trench gratings and stair treats.

Features.

1>     Bearing bar specification:20×3 to 100×6

2>     Bearing bar pitch:12.5,15,25,30,40,60mm etc. also be according to clients requirement and 30,40,60mm are recommended

3>     Cross bar pitch:38,50,76,100mm,also be according to clients requirement and 50,100mm are recommended.

4>     The Maximum length of black panel is 7350mm

5>     Materials:mild steel or stainless steel

6>     Surface treatment:untreated,painting or hot dip galvanizing

7>     Steel grating with America standard can also be fabricated

Guide to Selection of steel Grid Plate

Light  &  Medium Duty                                                  Maximum recommended spans(mm)

Load bar size(mm)	Maintenance floors no public use UDL=2.5kPa			Pedestrain traffic public, residential and light use UDL=3kPa			Pedestrain traffic publicommercial and crowd use USD=4kPa
	Deflection=5mm			Deflection=5mm			Deflection=5mm
	Beflection bar pith(mm)			Beflection bar pith (mm)			Beflection bar pith (mm)
	30	40	60	30	40	60	30	40	60
20 x 3	1190	1110	1000	1140	1060	960	1060	980	890
25 x 3	1410	1310	1180	1350	1250	1130	1250	1170	1050
32 x 3	1700	1580	1430	1620	1510	1360	1510	1400	1270
40 x 3	2010	1870	1690	1920	1780	1610	1780	1660	1500
20 x 5	1350	1260	1140	1290	1200	1090	1200	1120	1010
25 x 5	1600	1490	1350	1530	1420	1290	1420	1320	1200
32 x 5	1930	1790	1620	1840	1710	1550	1710	1590	1440
40 x 5	2280	2120	1920	2180	2030	1830	2030	1890	1700

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