1. Full range in bearing bar size and mesh size 2. Largest production capability 3. Best Price 4. Reliable manufacturer

1. Comprehensive type and broadest range in dimension.

1.1  Material Q235 , or other equivalent material

1.2  Grating Conformity Standard: YB/T4001, ANSI/NAAMM-MBG531, BS4592, AS1657, JS3101

1.3  Grating Dimension

Load Bearing Flat Bar size	Thickness≥3mm, depth ≥19mm
	19X3,19X5,20X3, 20X5, 25X3, 25X4, 25X4.5, 25X4.7, 25X5…..40X6, 40X8, 40X10,….90X6….
Pitch of Load bearding flat bars(mm)	12.5,15, 20, 30, 30.6,  32.5, 34,  34.8,  35.3, 40, 60, 80……
Pitch of cross bars(mm)	38.1, 50, 50.8, 70, 75, 80, 99,100, 101.6, 102……

The sizes and dimension is not limited to above.

1.4  Grating type:  Bearing bar: Plain type, Plain I type, Serratd type, Serrated I type;

       Cross bar:  Square twisted cross bar, Round cross bar

2. Types of Drainage/Ditch Cover: a. Normal type; b. U type; c. Security type (anti-theft)

2.1 Normal type of Drainage/Ditch Cover

     Embedded installation, safe and reliable, anti-thrust (not easy to shed)

2.2 U type of Drainage/Ditch Cover

      Both ends welded with angle steel, so no need pre-embedded supporting part.

 

 

2.3 Security type of Drainage/Ditch Cover

      Both ends connected with steel frame through gemel, so anti-theft and safe , easy to open.

3. Eleven (11) sets of press welded (electro-forged welding) production lines creat largest production capability, flexible and controlled delivery to cater to the variety of needs of customers.

4. The high-tec techneque and equipment guarantee high quality of gratings. Most of machine were imported from Japan, Germany,Switzerland,etc.

5. Capable design can make grating customized according to site requirement.

Drainage / Ditch Cover used at airport