How To Choose The Right Steel Grating?

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Steel gratings have been widely used in various industries as industrial platforms, ladder treads, handrails, access floors, railway bridge sidewalks, high-altitude tower platforms, drainage ditch covers, manhole covers, road barriers, three-dimensional Parking lots, fences of offices, schools, factories, enterprises, sports fields, garden villas, can also be used as exterior windows of residential houses, balcony fences, highways, railways, etc.

Many specifications are optional on steel grating such as stainless steel gratings, galvanized steel gratinggalvanized steel gratings, pressure-locked steel gratings and heavy steel gratings and other specifications.

So many data of them, how do we choose?

1. According to the processing method, there are two types: welded steel grating and press-lock grating.

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.

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.

The features of the two gratings are similar. You can choose according to your own will.

2. Material

When choosing materials,we must consider the expected usage of the grating to ensure that the grating has adequate strength to ensure the correct choice of materials.

Each material has its unique characteristic and applications. Here we’d like to introduce it briefly to help you choose the right material.

MaterialFeaturesApplicationGalvanized steelEconomical, high strength, excellent corrosion resistanceSuitable for platforms and walkways in petrochemical, power plants, municipal engineering, etc.Low carbon steelEconomical, excellent ductility, great welding and stamping propertiesSuitable for municipal construction, interior decoration, building materials, platform aisles, etc.304 stainless steelGreat corrosion resistance, heat resistance and high tensile strengthSuitable for chemical plants, food plants, power plants and wastewater treatment and other applications require high temperature operations.316 stainless steelCompared with 304 stainless steel, it has better corrosion resistance and pitting resistance, greater heat resistanceFor chemical, pulping and paper processing, textile equipment, petroleum refining, etc.AluminumLight weight, great corrosion resistance and attractive appearanceWidely used in indoor ceilings, outdoor curtain walls, other decorative applications and mechanical equipment maintenance platforms.

Anchor

 – A device by which grating is attached to its supports

Band

 – A flat bar welded to the end of a grating panel, or along the side of a cutout, and extending neither above nor below the bearing bars.

Load Carrying Band

 – A band used to transfer load between bearing bars.

Trim Band

 – A band which carries no load, used primarily for appearance and closing open ends.

Bearing Bars

 – Load-carrying main elements made from steel, aluminum or stainless steel, extending in the direction of the grating span

Bearing Bar Centers

 – The distance center-to-center of the bearing bars.

Carriers

 – Flats or angles which are welded to the grating panel and nosing of a stair tread and are bolted to a stair stringer to support the tread.

Clear Opening

 – The distance between faces of bearing bars in rectangular gratings, or between a bent connecting bar and a bearing bar in a riveted grating.

Cross Bars

 – The connecting bars which extend across the bearing bars, usually perpendicular to them. The may be bent into a corrugated or sinuous pattern and, where they intersect the bearing bars, are welded, forged or mechanically locked to them.

Pressure-Locked Grating

-Pressure-locked means bearing bars are locked in position by cross bar deformation instead of riveting or welding. Several proven methods include:
•   Expansion of an extruded or drawn tubular   cross bar;
•   Extruded cross bar deformed or swaged between bearing bars;
•   Press assembly of rectangular cross bars into slotted bearing bars.

Radially Cut Grating

 – Rectangular grating which is cut into panels shaped as annular segments, for use in circular or annular areas.

Reticuline Bar

 – A sinuously bent connecting bar extending between two adjacent bearing bars, alternately contacting and being riveted to each.

Rivet Centers

 – The distance center-to-center of rivets along one bearing bar.

Riveted Grating

 – Grating composed of straight bearing bars and bent connecting bars, which are joined at their contact points, by riveting.

Serrated Grating

 – Grating which has the top surfaces of the bearing bars or cross bars, or both, notched.

Cross Bar Centers

 – The distance center-to-center of the cross bars.

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Steel gratings have been widely used in various industries as industrial platforms, ladder treads, handrails, access floors, railway bridge sidewalks, high-altitude tower platforms, drainage ditch covers, manhole covers, road barriers, three-dimensional Parking lots, fences of offices, schools, factories, enterprises, sports fields, garden villas, can also be used as exterior windows of residential houses, balcony fences, highways, railways, etc.

Many specifications are optional on steel grating such as stainless steel gratings, galvanized steel gratings, pressure-locked steel gratings and heavy steel gratings and other specifications.

So many data of them, how do we choose?

1. According to the processing method, there are two types: welded steel grating and press-lock grating.

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.

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.

The features of the two gratings are similar. You can choose according to your own will.

2. Material

When choosing materials,we must consider the expected usage of the grating to ensure that the grating has adequate strength to ensure the correct choice of materials.

Each material has its unique characteristic and applications. Here we’d like to introduce it briefly to help you choose the right material.

MaterialFeaturesApplicationGalvanized steelEconomical, high strength, excellent corrosion resistanceSuitable for platforms and walkways in petrochemical, power plants, municipal engineering, etc.Low carbon steelEconomical, excellent ductility, great welding and stamping propertiesSuitable for municipal construction, interior decoration, building materials, platform aisles, etc.304 stainless steelGreat corrosion resistance, heat resistance and high tensile strengthSuitable for chemical plants, food plants, power plants and wastewater treatment and other applications require high temperature operations.316 stainless steelCompared with 304 stainless steel, it has better corrosion resistance and pitting resistance, greater heat resistanceFor chemical, pulping and paper processing, textile equipment, petroleum refining, etc.AluminumLight weight, great corrosion resistance and attractive appearanceWidely used in indoor ceilings, outdoor curtain walls, other decorative applications and mechanical equipment maintenance platforms.

Anchor

 – A device by which grating is attached to its supports

Band

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 – A flat bar welded to the end of a grating panel, or along the side of a cutout, and extending neither above nor below the bearing bars.

Load Carrying Band

 – A band used to transfer load between bearing bars.

Trim Band

 – A band which carries no load, used primarily for appearance and closing open ends.

Bearing Bars

 – Load-carrying main elements made from steel, aluminum or stainless steel, extending in the direction of the grating span

Bearing Bar Centers

 – The distance center-to-center of the bearing bars.

Carriers

 – Flats or angles which are welded to the grating panel and nosing of a stair tread and are bolted to a stair stringer to support the tread.

Clear Opening

 – The distance between faces of bearing bars in rectangular gratings, or between a bent connecting bar and a bearing bar in a riveted grating.

Cross Bars

 – The connecting bars which extend across the bearing bars, usually perpendicular to them. The may be bent into a corrugated or sinuous pattern and, where they intersect the bearing bars, are welded, forged or mechanically locked to them.

Pressure-Locked Grating

-Pressure-locked means bearing bars are locked in position by cross bar deformation instead of riveting or welding. Several proven methods include:
•   Expansion of an extruded or drawn tubular   cross bar;
•   Extruded cross bar deformed or swaged between bearing bars;
•   Press assembly of rectangular cross bars into slotted bearing bars.

Radially Cut Grating

 – Rectangular grating which is cut into panels shaped as annular segments, for use in circular or annular areas.

Reticuline Bar

 – A sinuously bent connecting bar extending between two adjacent bearing bars, alternately contacting and being riveted to each.

Rivet Centers

 – The distance center-to-center of rivets along one bearing bar.

Riveted Grating

 – Grating composed of straight bearing bars and bent connecting bars, which are joined at their contact points, by riveting.

Serrated Grating

 – Grating which has the top surfaces of the bearing bars or cross bars, or both, notched.

Cross Bar Centers

 – The distance center-to-center of the cross bars.

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