drainage cover grating-hot dip galvanized gully grating

Model:	JW010
Brand:	JW
Origin:	Made In China
Category:	Metallurgy , Mining & Energy / Metallurgy & Mining / Metal Mineral
Label:	manhole cover , gully grating , trench cover
Price:	US $5 / pc
Min. Order:	1000 pc

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Product Description

The usage of drain grate covers - fabricated gully grating,hatch board

As a cover in a variety of passer-by, driveway, yard and construction for water leakage, Trenching, underpass subway, light well, inspection well and etc

Trench Covers are widely used in Mass transportation, subways, playground, industrial areas, parks and high ways...etc

Trench Covers are ideal for sub-stations, waste-water treatment plants, and chemical facilibility

Material- fabricated gully grating,hatch board

Bearing bar	Q235A or stainless steel
Cross bar	Q235A or 304 stainless steel

Steel grating standards - fabricated gully grating,hatch board

Country	Steel grating standars	steel standard	Hot dipped galvazising standard
China	YB/T4001.1-2007	GB700-88	GB/T13912-2002
U.S.A	NASI/NAAMM(MBG531-88)	ASTM(A36)	ASTM(A123)
U.K	BS4592-1987	BS4360(43A)	BS729
Australia	AS1657-1992	AS3679	AS1650

Example for specification- fabricated gully grating,hatch board

Item No	Bearing bar pitch	Cross bar pitch	specification os bearing bar(width*thickness)
Item No	Bearing bar pitch	Cross bar pitch	20*3	25*3	32*3	40*3	20*5	25*5
1	30	100	G203/30/100	G253/30/100	G323/30/100	G403/30/100	G205/30/100	G255/30/100
1	30	50	G203/30/50	G253/30/50	G323/30/50	G403/30/50	G205/30/50	G255/30/50
2	40	100	G203/40/100	G253/40/100	G323/40/100	G403/40/100	G205/40/100	G255/40/100
2	40	50	G203/40/50	G253/40/50	G323/40/50	G403/40/50	G205/40/50	G255/40/50
3	60	50	G203/60/50	G253/60/50	G323/60/50	G403/60/50	G205/60/50	G255/60/50

A drainage that is constructed across a road is called a ‘Transverse Trench’. Relation between car and the grating of the trench cover: The car passes through parallel with the bearing bars.