Press-locked grating has main four types because they have different bearing bars and cross bars.

1. Full-locked grating. Both the bearing bars and cross bars are notched and have the same height. They are interlocked with one another under extreme pressure.

2. Heavy-duty pressed grating. Both the bearing bar and cross bar are notched, but they have the different heights. The bearing bars are higher than the cross bars and they are interlocked with each other also at a high pressure.

3. Press-locked grating. Only the bearing bars are notched and the cross bars are common plain steel. They have different height and are locked with each other at a very high pressure. 

4. Louver grating. The notches of bearing bars are at a angle of 30° or 45°. The cross bars are insert into the bearing bars before being pressed. This type is widely used in the places where the privacy is very important. It can also be used as sunshade of the buildings.

Specifications of  Press-locked Steel Bar Grating

Material: low carbon steel, stainless steel and aluminum.

Surface treatment: galvanized, painted and powder coated.

Cross bar spacing: 4" or 2".

Bearing bar spacing: standard is 1-3/16" and 15/16".

• Smooth surface.
• Good air, light and water circulation.
• Firm and durable.
• Temporary or permanent applications.
• Stainless steel press-locked grating for alkali and acid resistance.
• Aluminum press-locked grating for light weight and corrosion resistance.
• Painted or galvanized surface treatment for longer service life.
• Excellent lateral stiffness.
• Serrated surface for anti-skid performance.
• Press-locked grating can be used combined with checker plate for further skip resistance.

• Press-locked grating has the similar application with welded steel bar grating and swage-locked grating.
• Press-locked grating can be used as stair treads, platforms, walkways in industrial factories or parks.
• Press-locked grating can be used as security screen in the commercial buildings.
• Press-locked grating is widely used in the municipal engineering as tree cover, trench cover and drainage cover.