Stair Tread 1.Metal grating 2.ASTM A123,SS400 3.Common pitch:30mm&40mm 4.Used in flooring,walkway ect. Stair Tread

Stair Tread Description

Stair tread is made of steel grating, and widely used  of different types of steel ladders, featuring easy installation, strong structure and aesthetic appearance, and good water permeability. We can fabricate according to customers sizes.

Stair Tread Specification

1. Forge Welded Grating Standardizations:

Countries	National Standards for Grating	Materials	Galvanizing Standards
China	YB/T 4001.1-2007	GB 700-88	GB/T13912-2002
America	ANSI/NAAMM(MBG531-00)	ASTM(A36)	ASTM(A123)
Britain	BS4592-1995	BS4360(43A )	BS729
Australia	AS1657-1992	AS3679	AS1650

2. Stair tread Bearing Bar Sizes: 1"x1/8",1-1/4"x1/8",1-1/4"x3/16",1-1/2"x3/16",2"x3/16",2"x1/4".

3. Stair tread Bearing Bar Pitches:12.5mm,15mm,24mm,25mm,30mm,30.16mm(1-3/16"),32.5mm,34.33mm,35.33mm,38mm,40mm,41.25mm,50mm,60mm

4. Stair tread Cross Bar Pitches: 38.1mm, 50mm, 75mm, and 100mm,101.6mm(4").

5. Stair tread Standard Grating Panels Sizes: 3'x12', 3'x20', 3'x24'.