Steel bar grating is a widely used grating type. It can be used in the trench and drainage system as the trench and drainage cover to ensure the excellent drainage performance and secure the pedestrians safety.
Like most of steel gratings, such as welded steel grating and press-locked grating, the drainage trench grating is made of carbon steel, aluminum steel and stainless steel. Different materials of grating can suit different applications of customers. Carbon steel grating is the most economical grating among the three types and the aluminum grating features lightweight and corrosion resistance, it can be used in the corrosive environments. The stainless steel grating has unique chemical stability, it is the ideal products to be used in the acid or alkali environments and keep a long service life.
Drainage trench grating types
Angle frame can increase the load capacity of drainage trench grate.
Trench grate and angle frame
It is the simplest and most economical types of types of trench covers. It can be installed on the trench and drainage to form a cover. This cover can not only ensure the excellent drainage performance, but allow the traffic passing through. The galvanized angle frame gives the maximum opening and supplies a strong and solid base for the grating. It can bear the load of steel grating can improve the load carrying capacity of grating.
Except for the standard trench grate, there is a type of grate is made of close mesh steel grating. The close mesh steel grating is available for pedestrians wearing high-heel shoes, bicycles and other wheeled equipment easy passing through.
Specification of standard trench grate and frame
Item
Clear opening (mm)
Grate width (mm)
Grate depth (mm)
Bar spacing (mm)
Angle frame (mm)
TGAFS-01
75
100
25
20*
30 × 15 × 3
TGAFS-02
105
150
25
25
30 × 30 × 5
TGAFS-03
120
150
25
20*
30 × 15 × 3
TGAFS-04
150
200
25
20*
30 × 30 ×5
TGAFS-05
150
215
32
25
40 × 40 × 5
TGAFS-06
200
250
25
25
30 × 30 × 5
TGAFS-07
200
275
40
25
45 × 45 × 5
TGAFS-08
235
300
32
25
40 × 40 × 5
TGAFS-09
250
300
25
25
30 × 30 × 5
TGAFS-10
250
325
40
25
45 × 45 × 5
TGAFS-11
300
350
25
25
30 × 30 × 5
TGAFS-12
300
375
40
25
45 × 45 × 5
TGAFS-13
300
395
50
25
55 × 55 × 5
TGAFS-14
400
475
40
25
45 × 45 × 5
TGAFS-15
400
495
50
25
55 × 55 × 5
Specification of close mesh trench grate and frame
Item
Clear opening (mm)
Grate width (mm)
Grate depth (mm)
Bar spacing (mm)
Angle frame (mm)
TGAFC-01
75
100
25
9
30 × 15 × 3
TGAFC-02
120
150
25
9
30 × 15 × 3
TGAFC-03
150
200
25
9
30 × 30 ×5
Angle sided grates
Angle sided grate is a type of drainage trench cover with angle bar on the two side of the grating. It is fit for the concrete trench, which is molded a channel to place the grates. The sided angle bars can bear the load capacity of the grating and ensure the long service life of the grate. The appropriate opening size can not only enable the drainage but also block the large wastes from entering the trench and blocking the trench.
The angle sided grate has smooth and serrated surface for choice. And the common length of angle sided grates are 1m.
Angle sided grate with smooth surface.
Angle sided grate with serrated surface.
Specification of standard angle sided grate
Item
Grate width (mm)
Grate depth (mm)
Angle size (mm)
Bar spacing (mm)
ASGS-01
75
25
25 × 25 × 3
20*
ASGS-02
100
25
25 × 25 × 3
20*
ASGS-03
150
25
25 × 25 × 3
20*
ASGS-04
150
30
30 × 30 × 5
25
ASGS-05
200
25
25 × 25 × 3
20*
ASGS-06
200
30
30 × 30 × 5
25
ASGS-07
250
25
25 × 25 × 5
25
ASGS-08
250
40
40 × 40 × 5
25
ASGS-09
300
25
25 × 25 × 5
25
ASGS-10
300
40
40 × 40 × 5
25
ASGS-11
400
40
40 × 40 × 5
25
Specification of close mesh angle sided grate
Item
Grate width (mm)
Grate depth (mm)
Angle size (mm)
Bar spacing (mm)
ASGC-01
100
25
25 × 25 × 3
9
ASGC-02
150
25
25 × 25 × 3
9
ASGC-03
200
25
25 × 25 × 3
9
Box grates
Box grate is a type of drainage trench cover with galvanized frame. The frame make it easy to install the box grating onto ground. There are hinges connecting the grate and frame. This design is ideal for easy cleaning of trench. The surface of box grate can be smooth and serrated to suit different applications of customers. The grate on the frame is mostly welded steel grating which is the simplest and most widely used grating type.
Smooth surface hinged box grate.
Serrated surface hinged box grate.
Specifications of box grate
Item
Clear opening (mm)
Grate size (mm)
Grate depth (mm)
Frame size (mm)
BG-01
250 × 250
300 × 300
25
30 × 30 × 3
BG-02
300 × 300
350 × 350
25
30 × 30 × 5
BG-03
300 × 300
365 × 365
32
40 × 40 × 5
BG-04
450 × 450
500 × 445
25
30 × 30 × 5
BG-05
450 × 450
525 × 445
40
45 × 45 × 5
BG-06
600 × 600
650 × 595
25
30 × 30 × 5
BG-07
600 × 600
695 × 595
50
55 × 55 × 5
BG-08
750 × 750
845 × 745
50
55 × 55 × 5
BG-09
900 × 600
895 × 650
25
30 × 30 × 5
BG-10
900 × 600
895 × 695
50
55 × 55 × 5
BG-11
900 × 900
895 × 995
50
55 × 55 × 5
BG-12
900 × 900
895 × 980
75
85 × 75 × 6
The box grate have some other types with different accessory and structure, you can refer to it and find the perfect for you. If you have any other drawings, we can customize as your requirement.
Drainage trench box grates without hinge connection.
Drainage trench box grate with handles.
Hinged drainage trench box grate with cross bar.
Drainage trench box grate with supporting bars.
Applications
The drainage trench grating is mainly used in the municipal engineering, factory, garage and residences to drain water and keep ground dry.
Close mesh drainage trench grate is ideal for pedestrian wearing high-heel shoes passing through.
Swage-locked drainage trench grate can supply lateral stiffness for the grating.
Angled trench grates are suitable for concrete ground.
Trench grate and angle frame is widely used to protect the trench and drainage.
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