Stainless Steel Bar Grating (SS Grating)

Our stainless steel bar gratings are characterized by their high strength, superior durability and high resistance to corrosion for all load bearing applications. It is their long-lasting service that makes them a very economical choice over the long term. Therefore, our stainless steel bar gratings are widely used as walkways, catwalks, platforms, stairways, entranceways and trench gratings in water treatment, chemical processing, oil and gas producing, food processing plants, breweries, dairies, sewage/power plants, and hydrocarbon facilities.
Manufactured from alloy types 304, 304L, 316, or 316L, our stainless steel bar grating is a series of bearing bars joined to perpendicular cross bars at various intervals to form a load-bearing panel.
Our stainless steel bar gratings are available in press welded, manually welded, press locked and swage locked constructions with standard plain or optional serrated work surfaces.
The size of bearing bars (load bars) usually ranges from 20mm deep x 3mm thick to 65mm deep x 5mm thick. The bearing bar spacing normally ranges from 20mm to 30mm on center. For custom sizes and spacings, please contact TSG.
The size of cold twisted square steel bars (cross bars or cross members) is usually 5mm x 5mm, 6mm x 6mm or 8mm x 8mm. The cross bars are normally at 2'' (50mm) or 4'' (100mm) on center. Please note that cold twisted square steel bars provide a non-slip walking surface. For custom sizes and spacings, please contact TSG.
Our stainless steel bar grating is available in one of three finishes: mill finish, commercial clean and electro-polished.

Product Parameters of Stainless Steel Bar Grating (SS Grating)

Technical specifications of our stainless steel bar grating are shown in the table below:

Note:
For more information on safe load data, please feel free to contact us, and our engineers will be more than happy to share them with you.

Production Steps

Now we hereby brief you all on how many production steps should be strictly followed to manufacture our hot dip galvanized machine press welded steel gratings.
Step 1: Materials Preparation
Ready bearing bars and cross bars properly for Step 2.
Step 2: Bearing Bars Placement
Place bearing bars into a work-holding device that is suitable for holding bearing bars in place.
Step 3: Pressure Welding
This step involves cold pressing of cross bars into bearing bars at high pressure and resistance welding of the bar materials under great pressure at high temperature. In this step, a moving fixture is responsible to safely carry cross bars into place, where a manipulator will grip cross bars firmly and immediately once they are in the right position, and then the press welding operation follows instantly.
Step 4: Flush Trimming for Edges
Flush trimming is designed to remove the excessive portion of cross bars that extends beyond the edges of the grating panel.
Step 5: Cutting to Size and Shape
Cut to size and shape in strict accordance with the desirable dimensions and shapes provided for by the working drawings of the buyer.
Step 6: Banding for Open Ends
Banding is a welding process that closes open ends of bearing bars, and the line of cutouts if any, of the grating panel. As a rule, banding bars are the same as bearing bars in thickness and height, however if banding bars serve as the load carrying bars or other special purposes, and the buyer's working drawings prescribe otherwise, then the buyer's working drawings shall prevail.
Step 7: Hot Dip Galvanizing
Once the banding process is complete, the grating panels should be finished by using the hot dip galvanizing process.
The zinc coating thickness is usually 65 μm or above, which is enough to resist corrosion for 15-30 years in harsh conditions.