ISO9001 Professional Steel Grating Manufacturer Hot DIP Galvanized Drain Grating Covers
Steel grating is made of bearing bar and cross bar, placed horizontally and vertically, and at an equal pitch apart, by welding with 200-ton hydraulic resistance automatic welding equipment, then cutting, punching and banding ends.
| Type of bearing bar | 25x5x3, 32x5x3, 38x5x3, 50x7x4, 60x7x4,...75x7x4mm |
|---|---|
| Pitch of bearing bar | 12.5, 15, 20, 23.85, 25, 30, 30.16, 30.3, 34.3, 35, 40, 41, 60 mm |
| Pitch of cross bar | 38, 50, 76, 100, 101.6mm |
- Serrated bearing bar
- Plain bearing bar
- I type bearing bar
| Type | GT type, GU type, GM type or customization |
|---|---|
| Material | Low Carbon Steel or Stainless Steel |
| Surface treatment | Hot-dip galvanizing or painted |
| Standard | YB/T4001.1-2007, ANSI/NAAMM, BS4592, AS1657 |
| Application | Draining well, park and civil projects, etc |
Galvanized steel Grating is extremely strong and durable for all load bearing applications and is primarily used for pedestrian and light vehicle traffic. Our galvanized coating process provides for years of corrosion resistance in acidic and high moisture environments.
Galvanized Steel Expanded Metal is a sheet product that has been slit and stretched to diamond shaped openings. Galvanized expanded metal offers savings in weight and allows free passage of light, liquid, sound and air while providing corrosion resistance in harsh environments.
| Material | 1. Carbon Steel Q235 2. Stainless Steel 304 / 316 |
|---|---|
| Type | Press locked / 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 | from 18.5 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 |
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