Steel Bar Grating Manufacturer

Name: Steel Bar Grating
Brand: Sino Composite Structures Co., Ltd.
Price: 150-800 USD
Rating: 4.8 (50 reviews)

Hot-dip galvanized steel grating also called bar grating, is made of load-bearing flat steel and cross bars arranged in a certain interval, welded into original plates by high-voltage resistance welding machines, and then processed into finished products through cutting, notching, opening holes, hemming and other processes. The welded steel grating is immersed in molten zinc liquid, and a dense zinc layer is formed on the surface of the steel grating through the zinc-iron alloy reaction. This process can greatly improve the corrosion resistance of the steel grating and extend its service life.

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Hot Dip Galvanized Steel Grating with Plain Surface

Hot Dip Galvanized Steel Grating with Serrated Surface

Steel Grating Raw Material Steel Rolls & Bars

Steel Grating Raw Material Twisted Bars

Steel Production Process

Pressed welded steel grating. The cross bar is pressed into the bearing bar by an automatic resistance welding machine.

Penetration welding grating. Pre-drill holes in the bearing bars, usually in the middle. Insert the cross bar, usually a round bar. Weld it into shape.

Press locked steel grating. The pressed locked steel grating is made of bearing bars through processes such as grooving (holes), plug-in cross flat or serrated bars pressing, welding, and finishing.

Swage locked grating. The cross bar is pre-threaded and then clamped into shape using special equipment. Usually used in the production of aluminum gratings.

Riveted steel grating. The connecting bar(cross bar) is bent and fixed with rivets in a direction parallel to the bearing bar.

Steel Grating Material & Manufacture Standard

Standard	Manufacture Standard	Steel Material Standard
Standard	Manufacture Standard	Bearing Bar	Cross Bar	Stainless Steel
China	YB/T 4001.1-2019	GB/T 700 Q235 Q235B	GB/T 700 Q235	ASTM A240 GR304(L) or GR316(L)
USA	ANSI/NAAMM(MBG531-00)	ASTM A1011 CS Type B or ASTM A36	ASTM A510	ASTM A240 GR304(L) or GR316(L)
British	BS4592	BS EN 10025	BS EN 10025	BS EN 10258
Germany	DIN24537-1	DIN EN 10025	DIN EN 10025	DIN EN 10088
Australia	AS1657	BS EN 10025	BS EN 10025	BS EN 10258

Conventional Grating Specifications

Bear Bar(mm)	Cross Bar(mm)			Bearing Bar Spacing(mm)			Cross Bar Spacing(mm)			Width(mm)	Length(mm)
20x3	5x5	6x6	8x8	30	34	40	38	50	100	993	6000	others
20x5	5x5	6x6	8x8	30	34	40	38	50	100	995	6000	others
25x3	5x5	6x6	8x8	30	34	40	38	50	100	993	6000	others
25x5	5x5	6x6	8x8	30	34	40	38	50	100	995	6000	others
30x3	5x5	6x6	8x8	30	34	40	38	50	100	993	6000	others
30x5	5x5	6x6	8x8	30	34	40	38	50	100	995	6000	others
32x3	5x5	6x6	8x8	30	34	40	38	50	100	993	6000	others
32x5	5x5	6x6	8x8	30	34	40	38	50	100	995	6000	others
40x3	5x5	6x6	8x8	30	34	40	38	50	100	993	6000	others
40x5	5x5	6x6	8x8	30	34	40	38	50	100	995	6000	others
50x3	5x5	6x6	8x8	30	34	40	38	50	100	993	6000	others
50x5	5x5	6x6	8x8	30	34	40	38	50	100	995	6000	others
* The table is of regular specifications. If other models are required, we will customize them for customers.

Hot Dip Galvanization Standard

Galvanized Standard	China	USA
Galvanized Standard	GB/T 13912	ASTM A123/A 123M
Material Thickness	3≤t≤6	1.6≤t≤3.2	3.2≤t≤4.8	4.8≤t≤6.4
Minimum Average Thickness (μm)	70	65	75	75
Conversion	mils=μmx0.03937 oz/ft²=μmx0.02316 g/m²=μmx7.067
*The thickness of the galvanized layer can be customized according to customer needs