Industrial step ladder: 1. P ,S ,I type 2. easy installation and anti slip ... 3. fix by welding or bolts 4. width:125-305mm Industrial step ladder ... black and hot dip Galvanizing / and stainless gratingUsage: ladder, flooring walkway, platform ,steel structures, stair tread, ... easy be installation, teardown and can be skid.2) Material: Mild Steel (Low Carbon Steel) or ...