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Gully Grating Steel Cover

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Trench Grating Covers Overview

The trench grating covers from Anping Lingguan are made of steel grating, offering a variety of models suitable for different spans, load-bearing capacities, and requirements. They are widely used in municipal roads, garden facilities, residential communities, schools, sports fields, and other various places. Depending on the application, the surface can be treated with hot-dip galvanizing, electroplating, or left untreated.


Materials of Trench Grating Covers

  1. Flat Steel Material:

    • Material: Q235A or Stainless Steel

    • Types: Plain Type, Anti-Slip Tooth Type, I-Shape

    • Common Specifications: 205, 255, 253, 325, 325, 405, 403, 505, 655, 756, 1008, 10010, etc.

    • Multiple specifications available to meet various spans and load requirements.

  2. Crossbars Material:

    • Material: Q235A or 304 Stainless Steel

    • Types: Round Steel, Twisted Square Steel, Square Steel, Hexagonal Steel

    • Twisted Square Steel Specifications: 55, 66, 8*8 mm


Features of Trench Grating Covers

  1. Aesthetic Appearance:

    • Simple and sleek design with a silver finish that aligns with modern trends.

  2. Excellent Drainage:

    • Open area reaches 83.3%, over twice that of cast iron, ensuring efficient water drainage.

  3. Hot-Dip Galvanized Finish:

    • Strong anti-corrosion properties, maintenance-free, and no replacement needed for up to 30 years.

  4. Anti-Theft Design:

    • The cover and frame are connected via a hinge, making it difficult to steal while allowing easy opening.

  5. Cost-Effective:

    • In cases of large spans and heavy loads, steel grating is more affordable than cast iron, and reduces the cost of replacing stolen or damaged covers.

  6. High Strength:

    • The strength and toughness of the steel grating far exceed that of cast iron, making it suitable for large spans and heavy-duty environments like docks and airports.

  7. Versatile Specifications:

    • Multiple specifications available to meet varying environmental, load-bearing, span, size, and shape requirements.


Surface Treatment of Trench Grating Covers

  1. Hot-Dip Galvanizing:

    • Provides superior corrosion resistance, ensuring long-lasting durability.

  2. Electroplating (Cold Galvanizing):

    • Offers a certain level of corrosion resistance.

  3. Untreated:

    • Suitable for applications where no special corrosion protection is needed.


Applications of Trench Grating Covers

  • Municipal Roads:

    • Used in drainage systems, road facilities, etc.

  • Garden Facilities:

    • Suitable for drainage covers in green spaces and parks.

  • Residential Communities:

    • Commonly used in drainage systems in residential areas.

  • Schools & Sports Fields:

    • Used in various sports facilities and educational institutions for trench covering.


Common Specifications of Trench Grating Covers

  • G255/30/100

  • G303/30/100

  • G325/30/100

  • G323/30/100

  • G403/30/100

These specifications are most commonly used for roads with moderate traffic. When used as a trench cover, it is important to consider the risk of the cover being dislodged. Bolt-fixed covers are recommended for safety in such cases.


Symbols & Marking Methods for Trench Grating Covers

  • Surface Treatment: Hot-Dip Galvanizing (G), Spray Paint (P), Untreated (U)

  • Flat Steel Shape: Plain Type (P), Anti-Slip Tooth Type (S), I-Shape Flat Steel


Manufacturing Process of Trench Grating Covers

Trench grating covers are made by welding carbon steel flat bars and twisted steel rods in a specific spacing pattern using high-pressure resistance welding. The surface is treated with hot-dip galvanizing, which provides excellent corrosion resistance and ensures long-lasting use.


Conclusion

Trench grating covers are high-strength, corrosion-resistant solutions designed for use in a variety of environments. With excellent drainage properties, aesthetic design, and long-lasting durability, these covers are ideal for use in municipal projects, residential areas, sports venues, and more. Their versatility in specifications and materials makes them a reliable choice for a wide range of applications, offering high value and performance at an affordable price.


Gully and well cover steel grating used on the plaza.A gully and well cover with two plate extends to outside.A square gully and well cover made of steel grating.A gully and well cover with four bars can make it easier to fix.A line of gully and well cover installed on the road.There is a galvanized pedestrian tray grating under a white background.

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