Custom Hot DIP Galvanized Steel Grating with 30mm 40mm 60mm Pitch Bearing Bars for Trench Drain and Ground Walkway

SURFACE PROCESS OF GRATING
HOT GALVANIZING
Normally,Hot galvanizing will be carried out after end welding process,For 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 galvanizing are subject to the standards of GB/T 13912.

LACQUERING
To again protection layer through the ways of spraying,brushing and soaking.

SERVICE LIFE OF HOT GALVANIZING
Coated zinc thickness of 100um,the anticipated life of products in various circumstances.

ANTI-ACID AND ALKALI CORROSSION CAPACITY
The range of PH6 to PH12.5,a stable protective film will be formed on the zinc surface.it has good
anti-corrosive property.

CALCULATION OF WEIGHT AND AREA
1.The weight of gratings varies after end welded and hot galvanizing process. For normal industrial platform using 30mm pitch bearing bars,the weight will increase 12%;14% for 40mm pitch bearing bars and 16% for 60mm pitch bearing bars.
2.For those gratings processed according to the size supplied by customer,calculation will based on the actual area(including cutout and tap)
3.For those gratings processed according to customer's drawing,calculation will be based on the
total outside size(including cutout and tap)
4.For unusual size of grating cutouts shall not deduct from the length and width.

Vertical Bar Spacing	Horizontal Bar Spacing	Specification of Supporting Flat Steel (Width X 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
Vertical Bar Spacing	Horizontal Bar Spacing	Specification of Supporting Flat Steel (Width X 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

Product Tags:

30mm Pitch Bearing Bars Steel Grating

      

40mm Pitch Bearing Bars Platform Grating

      

60mm Pitch Bearing Bars Metal Grating

      

Custom Hot DIP Galvanized Steel Grating with 30mm 40mm 60mm Pitch Bearing Bars for Trench Drain and Ground Walkway Images