T1 Steel Grating Stair Treads

 T1 Steel Grating Stair Treads   Serrated Bar Steel Grating   Serrated Bar Steel Grating Supplier   Our company produces complete steel ladders with hand railings which are made of grating treads. According to whether the nosing to be used and the methods of mounting to stringers, grating treads are classified into four types, expressed as T1,T2, T3 and T4. In view of economics it is advisable to use the recommended lengths and widths below   SPECIFICATIONS   T1 Welded Fixing without Nosing        Type of Stair Treads Checkered plate nosing Structure Characteristics T1 NO For installation by welding, the two ends are closed with flat bars which are the same with the bearing bars in length. Without checkered plate nosing. Recommended Stair Treads Width        T1, T2, T3,T4 Bearing bar at 30mm pitch 95 125 155 185 215 245 275 T1, T2 Bearing bars 40mm pitch 125 165 205 245 285 T3,T4 Bearing bars 40mm pitch 115 155 195 235 275 Fixing hole centers 45 75 100 150 Grating Size        Grade CN: Q235, Q345, USA: A36, UK: 43A Standard CN: YB/T4001-1998, USA: ANSI/NAAMM, UK: BS4592-1987, AUS1657-1988, JJS Certification CE, GOST, ISO9001, ISO*, HSE Bearing bar type Plain, Serrated (tooth-like), I bar (I section), Serrated-I Bearing bar size 20X5, 25X3, 25X4, 25X5, 30X3, 30X4, 30X5, 32X3, 32X5, 40X5, 50X4.75X8,100X8mm,etc Bearing bar pitch 20,25,30,32.5,34.3,40,50,60,62,65mm Cross bar size 5X5, 6X6, 8X8mm (twisted bar)/5, 6, 8mm ( round bar) Cross bar pitch 0, 50, 60, 65, 76, 100, 101.6, 120, 130mm, etc. Panel size 3x20ft,3x24ft,3x30ft,5800x1000,6096x1000,6400x1000, as request Surface treatment Untreated, hot dip galvanized, cold dip galvanized, painted, powder coated,pickling, electrolytic polishing, or as customers' requirement. Gal....

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