Hot DIP Galvanized Drain Grating Covers ISO9001 Professional Steel Grating Manufacturer

Specification Parameters of Steel Bar Gratings:

1. Composition of steel bar grating
a. Bearing bar.
The bearing bar is flat steel, characterized by width × thickness. The size of the flat steel directly affects the bearing capacity of the steel bar grating and should be reasonably selected. The common sizes of flat steel are 25×5mm, 30×5mm, 40×5mm, 45×5mm, 50×5mm, etc.
b. Cross bar.
The crossbar is usually either twisted square steel, round steel or flat steel, and its function is to hold the bearing flat steel.

2. Bearing bar spacing and cross bar spacing.
a. Bearing bar spacing.
The distance between the centers of the adjacent bearing bars. The smaller the bearing bar spacing, the stronger the load-bearing capacity. The bearing bar spacing is often chosen to be 30mm.
b. Cross bar spacing.
The distance between the centers of the adjacent cross bars. The cross bar spacing is often selected as 50mm or 100mm.

3. Cross-sectional shape of the bearing flat bar.
Either rectangular cross-sectional flat steel, I-shaped flat steel or tooth-shaped flat steel.

4. Steel grating construction form.
Press-welded steel grating and pressure-locked steel grating.

5. Shape and size of the steel grating.
Steel grating usually needs to be made into various shapes and sizes according to the actual use of the project.

6. Material.
Commonly used materials are Q235, 304 or 316 grade stainless steel.

7. Surface treatment.
The finished welded steel grating is usually treated with an overall hot-dip galvanizing process for corrosion protection.

Main Types of Steel bar gratings:
The types of steel grating used include: steel grating platform (industrial flooring), grating stair treads, drainage well covers, drainage ditch covers, tree pond covers, steel grating ceiling, steel grating fences, etc.

Specification

1). Steel bar grating bearing bar: 35x5, 32x5, 32x4.5, 32x3, 30x5, 30x3, 25x5, 25x3, etc.

2). Steel bar grating cross bar diameter: 6mm, 8mm

3). Type for casting: By pressure welded, pressure locked

4). Grating surface treatment: By electro-galvanized coated, hot-dipped galvanized coated, stainless steel, untreated

5). Raw material: Iron or stainless steel

6). Material model: Q235, Q195, SS304, ss316, etc.

7). Weight: Depends on the exact type

Delivery

8). Package: In pallet or seaworthy package

9). Payment term: 100% T/T, or 30% T/T deposit, and also L/C is acceptable

10). Our grating machines number: 30, about 4 big machines

11). Our daily supply ability: 500 to 1000 square meters

Usage

12). Used as platform, trench cover, building, transportations and so on.

GNEE STEEL ,Has dedicated in producing and exporting all types of steel gratings for more than 19 years,A Professional Steel Grating & Safety Grating Manufacturer for Projects Engineering.

Factory

Advanced Equipment

We have more than 30 production lines of welded steel gratings and press lock gratings. Advanced equipment, skilled workers contribute to low production loss, high production efficiency and low products costs.

Supervise Strict Testing

All steel gratings are supervised by strict QUALITY CONTROL System both in International standard and enterprise test flow. All products our customers received are qualified and best in performance and package.

Steel Gratings Types We Supply

GNEE Steel Grating Application

Steel grating are designed and manufactured for various industrial and civil constructions in city road, gardens, yard, airport, railway and industrial engineering.

• Hot dip galvanized steel grating is the best choice for steel platforms in airports. Grating with 30 × 3 mm thick load bearing bars with a pitch of 30 mm and traverse bars at 50 mm or 100 mm is the suitable one.
• Steel grating, with robust design and spanning abilities, is very strong and safe for the support of floors and elevated walkway. It can be used for ceiling, interior decoration, platform aisle, ventilation windows, (Wells), advertising plaque and other construction.
• Widely used in the petrochemical industry, power plants, waterworks, sewage treatment plants, municipal works, sanitation projects in areas such as platforms, corridors, bridge, ditch cover, covers, ladders, fences, rails, and so on.