Steel graing can be made by Manual welding,Machine welding,which can arrange the bearing bar and cross bar in longitude and latitude order to certain distance.Cross bar is pressed into the beaing bar by high tension resistance welding which is controlled by mould/computer.
Flat steel is generally cold rolled Q235 flat steel, can also be hot rolled I flat steel, tooth flat steel, inclined flat steel, stainless steel flat steel and other specifications.The bar is generally twisted square steel, square steel, round steel, flat steel, etc.The surface treatment has: hot galvanizing, cold galvanizing, spray model, spray paint, dip anti-rust oil can prevent oxidation rust, (general stainless steel need not above treatment, most stainless steel surface polishing treatment).
Advantages: saving materials, reducing investment, simple construction, durable, modern fashion, anti-fouling, reducing wind resistance, simple design, strong corrosion resistance.
| Material | 1.Carbon Steel Q235 2.Stainless Steel 304 / 316 |
| Type | Press lokced / Flat bar / Serrated bar / I Bar |
| Bearing Bar Size | 20 x 3 to 100 x 9;the specification of "I-section" is 25 x 5 x 3, 32 x 5 x 3, 38 x 5 x 3, 40 x 5 x 3, 50 x 5 x 3, 50 x 7 x 4, 55 x 7 x 4, 60 x 7 x 4, 65 x 7 x 4, 70 x 7 x 4, 75 x 7 x 4, etc |
| Bearing Bar Pitch | 12.5 to 100 mm etc, 30, 40, 60mm are recommended, America standard is available |
| Cross Bar Pitch | from18.5 to 101.6mm etc, 50, 100mm are recommended, America standard is available |
| Specification | Size of bearing flat steel: 25x3mm / the center space: 30mm, 40mm, 50mm, 100mm
Size of horizontal pole: 10x2mm / the center space : 50mm, 100mm |
| Surface Treatment | Untreated / Painting / Hot Dip Galvanizing |
| Steel Standard | China GB700-88 / America ASTM (A36) / Britain ASTM (A36) |
| HDG Standard | China GB/T13912-92 / America ASTM (A123) / Britain BS729 |
| Quality Standard | China YB/T4001-1998 America ANSI/NAAMM (MBG531-88)
Britain BS4592-1987 Australia AS1657-1992 |
| No. | Bearing Bar Pitch
(mm) | Standard Panel Width
(Bearing Bar Thickness 5mm) | Bearing Bar Number
(PC) | Remark |
| 1 | 12.5 | 1005 | 81 | Pitch between the two sides are smaller than normal bearing bar pitch. |
| 2 | 15 | 1010 | 68 | |
| 3 | 20 | 1010 | 51 | |
| 4 | 22 | 995 | 46 | |
| 5 | 23.85 | 1007 | 43 | |
| 6 | 25 | 1005 | 41 | |
| 7 | 30 | 995 | 34 | |
| 8 | 30.16 | 1000 | 34 | |
| 9 | 30.3 | 1005 | 34 | |
| 10 | 32.5 | 1013 | 32 | |
| 11 | 34.3 | 1000 | 30 | |
| 12 | 35 | 1020 | 30 | |
| 13 | 35.3 | 1029 | 30 | |
| 14 | 40 | 1005 | 26 | |
| 15 | 41 | 1030 | 26 | |
| 16 | 41.4 | 999 | 25 | |
| 17 | 50 | 1005 | 21 | |
| 18 | 60 | 965 | 17 | |
| 19 | 62 | 997 | 17 | |
Product Tags:
|
|
Heavy Duty Galvanized Steel Welded Serrated Floor Bar Grating Anti-slip Trench Cover Images
|
