Grating Types

Trench cover by the Dutch for 25 × 2 mm thick flat steel; 10 × 2 mm flat steel bar for the center spacing of 50 mm; Angle iron framework of the length of the supplier according to 3 m.

A type Grating frame load bar piton
width B C D E angle
200 TGD-A200-25 1002 300 25 315 30 ∠30 × 30 × 3 20
250 TGD-A250-25 1002 350 25 365 30 ∠30 × 30 × 3 20
300 TGD-A300-25 1002 400 25 415 30 ∠30 × 30 × 3 20
350 TGD-A350-25 1002 450 25 465 30 ∠30 × 30 × 3 20
400 TGD-A400-25 1002 500 25 515 30 ∠30 × 30 × 3 20
450 TGD-A400-25 1002 550 25 565 30 ∠30 × 30 × 3 20
200 TGD-B200-25 992 300 25 315 30 ∠30 × 30 × 3 15
250 TGD-B250-25 992 350 25 365 30 ∠30 × 30 × 3 15
300 TGD-B300-25 992 400 25 415 30 ∠30 × 30 × 3 15
350 TGD-B350-25 992 450 25 465 30 ∠30 × 30 × 3 15
400 TGD-B400-25 992 500 25 515 30 ∠30 × 30 × 3 15
450 TGD-B450-25 992 550 25 565 30 ∠30 × 30 × 3 15

TG type grating

TRENCH COVERS & SUMP COVERS is used in municipal engineering, walkway, park, water & sewage treatment system etc. The entire range has been designed with a view to maximizing the grate open area thus achieving the most hydraulically efficient grates available, it can be manufacture the widest range of sizes for various load requirements.

Class A Type Grating Frame
Width B C D E Angle
TG type Grating 200 TG200-20 995 300 20 320 25 ∠50 × 25 × 5
250 TG250-20 995 350 20 370 25 ∠50 × 25 × 5
300 TG300-25 995 400 25 420 30 ∠50 × 25 × 5
350 TG350-25 995 450 25 470 30 ∠50 × 25 × 5
400 TG400-25 995 500 25 520 30 ∠50 × 25 × 5
450 TG450-25 995 550 25 570 30 ∠50 × 25 × 5
500 TG500-25 995 600 25 620 30 ∠50 × 25 × 5
550 TG550-25 995 650 25 670 30 ∠50 × 25 × 5
TG type Grating 200 LHTG200-25 995 300 25 320 30 ∠50 × 25 × 5
250 LHTG250-25 995 350 25 370 30 ∠50 × 25 × 5
300 LHTG300-32 995 400 32 420 37 ∠50 × 37 × 5
350 LHTG350-32 995 450 32 470 37 ∠50 × 25 × 5
400 LHTG400-40 995 500 40 520 45 ∠50 × 45 × 5
450 LHTG450-40 995 550 40 570 45 ∠50 × 45 × 5
500 LHTG500-45 995 600 45 620 50 ∠50 × 50 × 5
550 LHTG550-45 995 650 45 670 50 ∠50 × 50 × 5
TG type Grating 200 HTG200-32 995 300 32 320 37 ∠50 × 37 × 5
250 HTG250-40 995 350 40 370 45 ∠50 × 45 × 5
300 HTG300-45 995 400 45 420 50 ∠50 × 50 × 5
350 HTG350-45 995 450 45 470 50 ∠50 × 50 × 5
400 HTG400-50 995 510 50 530 55 ∠55 × 55 × 5
450 HTG450-50 995 560 50 580 55 ∠55 × 55 × 5
500 HTG500-60 995 630 60 650 65 ∠65 × 65 × 5
550 HTG550-60 995 680 60 700 65 ∠65 × 65 × 5
TG type Grating 200 HHTG200-40 995 300 40 320 45 ∠50 × 45 × 5
250 HHTG250-45 995 350 45 370 50 ∠50 × 50 × 5
300 HHTG300-50 995 410 50 430 55 ∠55 × 55 × 5
350 HHTG350-50 995 460 50 480 55 ∠55 × 55 × 5
400 HHTG400-60 995 530 60 550 65 ∠65 × 65 × 5
450 HHTG450-65 995 590 65 610 70 ∠70 × 70 × 5
500 HHTG500-65 995 640 65 660 70 ∠70 × 70 × 5
550 HHTG550-75 995 710 75 730 80 ∠80 × 80 × 5

The design loads of the moving vehicles such as heavy truck, tram-car, and pedestrian sidewalk are listed as below for reference.

Class Total Load Load of Rear Wheel Impact Load of Rear Whee Contract Length of Rear Wheel Width of Rear Wheel Cars Concerned
1st Class Bridge 20T 8,000 (kg) 11,200 (kg) 20 (cm) 50 (cm) Cement tanker Dump Truck
2nd Class Bridge 14T 5,600 (kg) 7,840 (kg) 20 (cm) 50 (cm) Bus
Degree of Light Truck 6T 2,400 (kg) 3,360 (kg) 20 (cm) 24 (cm) Fork Lift Truck
Degree of Car 2T 800 (kg) 1,120 (kg) 20 (cm) 16 (cm) Car
Sidewalk Distributed Load 500kg/m2

TU bar grating

For sidewalk loading

A Type Grating Frame Load Bar Pithn
Width B C D Angle 30
150 TU150-20 995 130 20 210 ∠40 × 40 × 4 30
200 TU200-25 995 180 25 280 ∠50 × 50 × 5 30
250 TU250-25 995 230 25 330 ∠50 × 50 × 5 30
300 TU300-25 995 280 25 380 ∠50 × 50 × 5 30
350 TU350-32 995 330 32 430 ∠50 × 50 × 5 30
400 TU400-32 995 380 32 480 ∠50 × 50 × 5 30