GratingStandard

Material Standard

HDGStandard

Handrail Standard

YB/T4001-2007

GB704-88

GB/T13912-92

4053.3-93

ANSI/NAAMM

ASTM (A36)

ASTM (A123)

BS4592-1995

BS4360 (43A)

BS729

BS6399/BS6180

AS1657-1992

AS3679

AS1650

1650-1985

       No

Item

Description trench drain grating cover 

1

Bearing bar

25x3,25x4,30x3,30x4,30x5,32x5,40x5,50x5,.....75x10mm

2

Bear bar pitch

12.5, 15, 20, 23.85, 25, 30, 30.16, 30.3, 34.3, 35, 40,41,60mm. US standard: 1"x3/16", 1 1/4"x3/16", 1 1/2"x3/16",  1"x 1/4", 1 1/4"x 1/4", 1 1/2"x 1/4" etc.

3

Cross bar pitch

30.38.1, 40,50, 60,76,100,101.6mm

4

Material

Q235, Q235, A36, SS304,SS316,

5

Surface treatment

Black, hot dipped galvanizing, painting 

       Items

Features

1

Good appearance: simple line, silvery surface, modern design.

2

Optimized drainage effect: water leakage area upto to 83.3% which is twice of the iron castings.

3

HDG: superior rust protection, free of maintenance and replacement. 

4

Anti-theft design: Covers and frames are connected by hinges providing safe and convenient application

5

Save project investment: lower price and lower maintenance cost compared to iron castings.

6

High strength: higher strength and durability than iron castings, suitable for using in larger spacing and heavier loading conditions such as the docks and airports.

7

They are available in various types to satisfy the need for different environment, loading, spacing, and configuration.