Differents between molded FRP grating and pultruded FRP grating

Pultruded fiberglass grating and molded fiberglass grating are two common types of fiberglass reinforced plastic (FRP) products, which have significant differences in production process and performance

Manufacturing process:

Pultruded fiberglass grating: Using pre manufactured fiberglass profiles, a grid structure is formed through assembly and connection.

Molded fiberglass grating: Mix resin and glass fiber and place them in a mold for high-temperature and high-pressure treatment to shape them.

Two types of grilles

Appearance and surface texture:

Pultruded fiberglass grating: Due to the use of profile assembly, the surface can be divided into flat, sandblasted surfaces, grids, and porosity that are flexible and adjustable.

Laying sand fiberglass extruded grating

The molded fiberglass grating has the following surfaces:

Flat surface: The surface is flat without any additional textures or patterns.

Concave surface: The surface has a concave texture, which can increase the anti slip performance of the grille.

Sand surface: The surface is covered with sand or other particles, which increases friction and improves anti slip performance, especially suitable for humid environments.

Sealed surface: The surface has undergone special treatment to give it a certain degree of sealing, suitable for some environments that require waterproofing or dust prevention.

Types of fiberglass molded grilles

Size and shape:

Pultruded fiberglass grating: Different profiles can be selected for assembly according to needs, so the range of shape and size changes is relatively large.

Molded fiberglass grating: Due to the size and shape of the mold, the shape and size of the produced grille are relatively fixed, with 1220x3660mm being the most common

Mechanical properties:

Pultruded fiberglass grating: Due to the use of profile assembly, it usually has better strength and stiffness, with a larger span compared to molded grilles.

Molded fiberglass grating: Although it also has a certain strength, it may be slightly inferior compared to extruded grille.

The original website of the article:https://www.fiberglass-profiles.com/pultruded-vs-molded-grating/

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