The Importance of Galvanized Drain Grate in Industrial Settings

Galvanized Drain Grate for Power Plants

Galvanized drain grate for power plants is suitable for two specifications: G203/30/100 and 205/30/100. Prices vary with fluctuations in raw material costs.

Access platforms designed for 2KN/m² uniform distributed loads are categorized as Type I galvanized drain grate platforms, suitable for the G203/30/100 specification. Inspection platforms and stairwell platforms, designed for 4KN/m² uniform distributed loads, fall under Type II galvanized drain grate platforms, suitable for the 205/30/100 specification. Platforms come in widths of 600, 800, and 1000, and the orientation of flat steel placement in the galvanized drain grate can be in any direction.

Galvanized drain grate can be fixed to the frame in two ways: 1. Welding and 2. Clamp installation. Welding is typically used for platforms, while clamp installation may be used for movable platforms or when cover plates are required for lifting holes.

Welding: Four points of welding are applied to each galvanized drain grate, specifically on the first flat steel at each corner of the grating. The welding seam length should not be less than 20mm, and the areas smoked black after welding should be coated with silver paint.

Clamp Installation: At least four clamp installations should be used for each galvanized drain grate, with A-type, B-type, and C-type clamps available.

Transformer Oil Pit Grate Manufacturers

Transformer oil pit grates are generally divided into upper and lower layers. The upper layer has lower load-bearing requirements and is intended for pedestrian use. Manufacturers typically recommend the 303/30/100 specification for this layer. The lower layer requires load-bearing capacity for gravel and is usually recommended to use the 405/30/100 specification. Specific specifications can be customized based on aesthetic preferences.

The placement of gravel on the lower layer of the oil-immersed transformer oil pit grating serves two primary purposes:

Fire Prevention: The area beneath the transformer contains an oil collection pit or tank, connected to the oil drainage channel or accident oil pit. A steel grating is placed above the oil pit, and gravel is spread on top of the grating. In the event of a sudden fire in the operating transformer, oil sprayed or discharged from the accident oil valve flows into the oil pit, and then into the accident oil pit. The gravel acts as an isolating layer, reducing the fire’s intensity, aiding in fire suppression. Additionally, high-temperature transformer oil is cooled by the gravel, helping to reduce the fire’s intensity.

Oil Drainage: Some transformer oil pits have steel grating, while others do not. In cases with steel grating, gravel is placed on top of the grating. This arrangement facilitates oil drainage and serves as insulation, making maintenance, inspections, and operational checks easier. It also prevents the oil from continuing to burn if the transformer catches fire, avoiding clogging of the oil drainage pit’s bottom oil discharge holes. The oil flows through the gravel gaps and prevents surface contamination when draining, while the gravel also cools the oil temperature, preventing combustion.

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