The main difference between the two gratings is the mode of production.
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Welded steel grating
It is a steel grating fixed by pressure resistance welding in the each intersection point of bearing bar and cross bar, and the cross bar is generally used by square steel or twisted steel. It provides a robust structure, high strength and great carrying capacity. It is commonly served as walkways, stair treads, fences, floors, etc.
Figure 1: Welded steel grating for desks and seats
Figure 2: Welded steel grating for security fence
Press-locked grating
It is a steel grating fixed through the pressure to make the cross bar into the pre-open flat steel in the each intersection point of bearing bar and cross bar, and the cross bar is usually flat steel. It offers a stable connection and an attractive appearance. It is widely used in factories, civil and commercial buildings for stair treads, trench covers, floors, platforms, fences, etc.
Figure 3: Press-locked steel grating for pipeline cover
Figure 4: Press-locked steel grating for wall cladding
The features of the two gratings are similar. You can choose according to your own will.
Figure 5: Welded steel grating fixed by pressure resistance welding.
Figure 6: Press-locked grating fixed through the pressure to make the cross bar into the pre-open flat steel.
When you choosing materials, you must consider the expected use of the grating. Is it used only for grating walkways? Or a shelf? Does the vehicles need to pass through the gating? In these cases, you must ensure that the grating has adequate strength to ensure the correct choice of materials.
Each material has its unique characteristics and applications. Here we’d like to introduce it briefly to help you choose the right material.
Material Features Application Galvanized steel Economical, high strength, excellent corrosion resistance Suitable for platforms and walkways in petrochemical, power plants, municipal engineering, etc. Low carbon steel Economical, excellent ductility, great welding and stamping properties. Suitable for municipal construction, interior decoration, building materials, platform aisles, etc. 304 stainless steel Great corrosion resistance, heat resistance and high tensile strength Suitable for chemical plants, food plants, power plants and wastewater treatment and other applications require high temperature operations. 316 stainless steel Compared with 304 stainless steel, it has better corrosion resistance and pitting resistance, greater heat resistance For chemical, pulping and paper processing, textile equipment, petroleum refining, etc. Aluminum Light weight, great corrosion resistance and attractive appearance Widely used in indoor ceilings, outdoor curtain walls, other decorative applications and mechanical equipment maintenance platforms.The common mesh size of welded steel gratings is 33 mm × 33 mm and 34 mm × 38 mm. According to the different load, place, use, method of application and the requirements of customer, there are different ways to divide grating mesh.
Figure 7: Larger mesh allows more light to pass through.
Figure 8: Smaller mesh prevents objects from falling off.
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Figure 9: Galvanized welded bar grating.
Figure 10: Powder coated steel grating.
Generally speaking, there are two kinds of surface shape of grating. One is smooth and the other is serrated. We usually make the grating surface into serrated to increase the performance of anti-slip.
Figure 11: Smooth surface welded steel grating.
Figure 12: Serrated surface welded steel grating.
If you are looking forward to purchase best steel grating you might be finding it hard to choose the right option. Well to make your task a bit easier, we have brought forth a handful of tips to follow and pick the best grating available in market.
Welded and press locked grating
Even though both of them are so much similar in looks, but they are typically different especially in the way they are being produced. The press locked gratings are put under high pressure during manufacture and pressed against each other. Hence the end result is, a product that is two-directional and is firmly connected to one another.
On the other hand, if we talk about welded type grating, it has high strength and can be installed easily without any problem. This product is a welded one piece product, which has high resistance and is strong enough to bear difficult situations. With these two gratings, having similar feature user can choose any one suiting their preferences.
Choice of materials
As per your needs the choice of materials can be made. If in case you require gratings on walkways or shelves, it is essential that you opt for the one which is strong and is able to bear different situations. If in case you don’t choose a strong material, there are chances that you will not get the desired results. Considering the fact, it is important that you choose the right material suiting your requirement.
Choice of mesh size
Once the choice of right material is made, it is important that you consider the size of metal bar grating as well. The common size available in the market is, 2 or 3 feet or 20 to 24 feet in length. While you are making the choice, don’t forget that its use, place and requirement will make the final decision with respect to its size.
Optical perception can be determined by size and shape of mesh. Hence customer should make a note of its requirement and then make the final choice. Further, use also plays an important factor. Like if you want more light, then having a bigger mesh is essential, on the contrary if you choose smaller mesh it is going to prevent any things from falling off. if you are looking for something which can carry heavy load, it is good to have a smaller mesh installed within the place.
Protection to the surface
If you are looking for a strong surface then probably steel grating is the choice to make. They are black in colour and are not coated with any zinc or material. Instead this is their natural look, and gives user a strong surface which they have always desired for. You will be delighted to know, that this form of grating is going to last for a long period of time probably 40 years without having any impact on its functionality. If in case you want an extra protection, then painting or power coating the grating is the option you can choose.
Conclusion