T2 Steel Grating Stair Treads
T2 Steel Grating Stair Treads,food Steel Grating Stair Treads,ISO 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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