Special Shape Grating Manholes Gullies Covers and Manhole Steps Metal Channel Grating Steel Drainage Cover Steel Manhole Cover Floor Drain Cover Ditch Cover

• After-sales Service: Any Time
• Warranty: Any Time
• Product Name: Customized Serrated Grating
• Shipping Cost: Estimated freight per unit.: about shipping cost and estimated delivery time.
• Currency: US$
• Return&refunds: You can apply for a refund up to 30 days after receipt of the products.
• Model NO.: G255/30/100
• Material: Q235 Carbon Steel
• Place of Origin: Hebei Anping
• Surface Treatment: Hot-Dipped Galvanized, Painted, Untreated
• Bearing Bar Type: Plain, I and Serrated
• Transport Package: Steel Belt
• Specification: ANSI/NAAMM(MBG531-88)
• Trademark: JIUWANG
• Origin: Hebei Anping
• HS Code: 7308900000
• Production Capacity: 1000PCS/Month

Product Description

 
This sector steel gratings is standard, and twisted square steel is normal straight-line. It is mainly used on the chemical tower equipment platform, which is made as sector so that can fit equipment better. Also, we can manufacture all kinds of sectors with twisted square steel according to clients'request for attractive external form. Are recommended
1) Cross bar pitch: 38, 50, 76, 100mm, also be according to client's requirement and 50, 100mm are recommended
2) Material: Mild steel or stainless steel
3) Surface treatment: Untreated, painting or hot DIP galvanizing
4) Steel Grating Standards:
A) China: YB/T4001-1998
B) USA: ANSI / NAAMM (MBG531-88)
C) UK: BS4592-1987
D) Australia: AS1657-1985


1.what is steel grating ?(  platform passageway floor grating  )    -- Steel grating is made by bearing bar and cross bar according to the flat-steel weft arrangement, in high-pressure spacing on resistance welder welded by cutting, incision, opening, overlock process such as processing and into customer requirements finished products.
 
how to calculate the galvanized grating weight?
Galvanized grating weight consist of bearing bar weight and cross bar weight.
Bearing bar weight =bearing bar PCS quanity: (width of grating/bearing bar pitch)+1 *weight of each PCS:length of bearing bar*height*thickness*density of steel
cross bar weight=cross bar PCS quantity*weight of each PCS: diameter square *density of steel
                                 

2.steel grating specification-   platform passageway floor grating
panel size available(black grating): 1000X5800mm or 1000X6000mm
 

Bearing bar pitch	Cross bar pitch	load steel size ( 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
Bearing bar pitch	Cross bar pitch	load steel size (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

3 galvanized grating size   introduction--  platform passageway floor grating
Type bearing bar 

Bearing bar type	Flat bar	I bar	Serrated bar
Cross bar type	Twisted bar	Round bar	flat bar
Production process	welded	Pressure locked
Surface treatment	Self-colour	Galvanized	painted
application	Platform	walkway&floor	Trench cover	Steel stair treads
	Suspended ceiling	Barrier fence

4.  platform passageway floor grating international standard

Steel Grating  Standard
	Steel Grating Standard	Steel Standard	Galvanizing Standard
China Standard	YB/T 4001.1-2007	GB700-88	GB/T13912-2002
USA Standard	ANSI/NAAMM (MBG531)	ASTM (A36)	ASTM (A123)
U.K. Standard	BS4592	BS4360 (43A)	BS729
Australia Standard	AS1657	AS3679	AS1650
Deutsche Standard	DIN24537	DIN17100-80	DIN50976

5.  platform passageway floor grating standard size manufacture process
 steel grating platform

steel grating fence

steel trench cover grating

steel stair treads grating

steel car washing station

6.our company profile
Hebei Jiuwang Metal Wire Mesh Co.,Ltd.(original Anping County Jintai Metal Mesh Co.,Ltd.).Established in 1992,our company is a manufacturer of large steel structure and steel gratings,integrating development,production and distribution.The company register capital is 10,080,000 Yuan,and take an area of 34,680 square meters.In 2003,we have got the ISO9001:2000 certification by BQR.
 
7.CHOOSE US BECAUSE WE HAVE
1.Independent automatic steel grating product line with huge workshop and devices to ensure delivery time. 
2. Over 20 years' experience in hot-dipped galvanized steel grating manufacture 
3. Quality guarantee under the control of ISO9001 2000 quality system 
4.Professional technology and design teams, chart as customers' requirements.