No

Item

Description

1

Bearing bar

20x5, 25x3, 25x4, 25x5, 30x3, 30x4, 30x5, 32x3, 32x5, 40x5, 50…75x8mm, etc.

US standard: 1''x3/16'', 1 1/4''x3/16'', 1 1/2''x3/16'', 1''x1/4'', 1 1/4''x1/4'', 1 1/2''x1/4'', 1''x1/8'', 1 1/4''x1/8'', 1 1/2''x1/8'' etc

2

Bearing bar pitch

25, 30, 30.16, 32.5, 34.3, 40, 50, 60, 62, 65mm, etc.

US standard: 19-w-4, 15-w-4, 11-w-4, 19-w-2, 15-w-2 etc.

3

Cross bar

5x5, 6x6, 8x8mm (twisted bar or round bar)

4

Cross bar pitch

40, 50, 60, 65, 76, 100, 101.6, 120, 130mm or as customers’ requirement.

5

Surface treatment

Black, Hot dip galvanized, Cold dip galvanized, Painted, Powder coated, or as customers’ requirement.

6

Material standard

Low carbon steel (ASTM A36, A1011, A569, S275JR, SS304, SS400,UK: 43A)

7

Galvanized standard

CN: GB/T13912, US: ASTM (A123), UK: BS729

8

Steel grating standards

A. China: YB/T4001.1-2007

B. USA:   NAAMM-MBG531-00

C. UK: BS4592-2005