Stair tread Standard type: 1m*6m (special sizes or American standard sizes available) Material: Carbon Steel Stair tread Pitch of Bearing barCross-bar PitchSpecification of bearing bar load(width×thickness)20×325×332×340×320×525×5 30100G203/30/100G253/30/100G323/30/100G403/30/100G205/30/100G255/30/10050G203/30/50G253/30/50G323/30/50G403/30/50G205/30/50G255/30/50 40100G203/40/100G253/40/100G323/40 ...
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