Yantai Wanjie Steel Grating Co., Ltd.

ditch cover_steel grating for gutterway and walkway

ditch cover_steel grating for gutterway and walkway
Product Detailed

1.ISO9001:2008 quality systems
2. 4 running lines
3. full range of steel gratings


Trench covers

Unique features:

1.Attractive appearance : clear and smooth figure, silvery appearance, modern-styled.


2.Optimal drainage: Leaking area can reach 83.3%, which is as twice as cast iron.


3.Galvanized surface: rust-proof, anti-corrosion,Maintenance convenient.


4.Economical: much more cheaper than cast iron.


5.Heavy-duty and large loading-bearing capacity, can be used in wharf,airport etc.


urban road, public squares, gardens, wharf, airport, parking, highway, railway, industrial 

engineering and so on.

Type of bearing bar

W--welded steel grating   L-- pressure-locked   C-- socket-welding

Bearing bar centers:

15-30, 40, 60, 80, 90 mm etc. with 30, 40 mm recommended.

Cross bar centers:

any greater than 30mm is ok. with 50, 100mm recommended.

Surface treatment:

G - galvanized

P - painted

U - untreated

Grating standard:

China:   YB/T4001.1-2007(YB/T4001.1-1998)

Britain:   BS4592-1:1995

US:      ANSI/NAAMM(MBG531-93)

Austrilia:  AS1657-1992


Example: G 325/30/100 WFG





A variety of specifications can meet all demands of shapes, sizes, spans, load capability in different conditions.

1. Drainage cover with embedded parts:



2. U-type: 

As to ditches without edge, U-type Trench covers are very easy and economical.


3. Security type: steel grating hinged pit cover

theftproof design: the cover and the frame are connected with hinges, so it's convenient for opening- up and very safe.



4. Common ditch covers:


5. Installation type:

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