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 food Steel Grating Stair Treads 

T2 Steel Grating Stair Treadsfood Steel Grating Stair TreadsISO Steel Grating Stair TreadsOur 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

Type of Stair Treads

Checkered plate nosing

Structure Characteristics

T2

NO

For anchoring with bolts, the two ends are closed with 65 x5 mm flat bars with holes. Without checkered plate nosing.

T1 Welded Fixingwithout NosingRecommended Stair Treads Width

T1,T2,T3,T4Bearingbarat30mmpitch

95

125

155

185

215

245

275

T1,T2Bearingbars40mmpitch

125

165

205

245

285

T3,T4Bearingbars40mmpitch

115

155

195

235

275

Fixingholecenters

45

75

100

150

GratingSize

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, ISO14001, 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.

Galvanization Standard

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

Color

Silver/Black

Application

petroleum and chemical, port, power, transportation, papermaking, medicie, steel and iron, food, municipality, real estate, manufacturing

SURFACE TREATMENT

Three ways of surface treatment can be adopted: galvanizing, painting and untreated, of which hot- dip galvanizing is recommended.

Hot-dip galvanizing

It is a form of galvanization. It is a process of coating steel grating with a thin zinc layer. By passing the metal through a molten bath of zinc, the average coating thickness is 70μm when steel bards range from 3mm to 5mm in thickness.

Painting

It is also a good way to get surface protective film. Coating thickness depends on the customer's choice.



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