steel manhole cover-galvanized trench cover grating

Model:	G255/40/100
Brand:	JW
Origin:	Made In China
Category:	Construction & Decoration / Building Steel & Structure
Label:	trench cover , manhole cover , sewer cover
Price:	US $5 / pc
Min. Order:	100 pc

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Product Description

The usage of drain grate covers - manhole cover

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- steel manhole cover

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

Steel grating standards - steel manhole cover

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- steel manhole cover trench cover

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.

Any inquiry feel free to contact me by dora.jwco at gmail dot com