Heavy‑Duty Gratings for Limited Drainage Ditch Rim Height

marzo 11, 2026

Customer Pain Points: Height Limits & Low Load Capacity of FRP Gratings

Many customers are limited by the height of their drainage ditch rims, only able to use FRP (fiberglass reinforced plastic) gratings with a height of 25, 30, or 38 mm. Whereas these conventional FRP gratings cannot withstand heavy loads.

Heavy‑Duty Gratings: Solve Height & Load Requirements Together

Sino Composite offers heavy-duty gratings of these heights. Compared to the 6-7 mm rib width of ordinary gratings, our heavy-duty gratings can achieve a rib thickness of up to 11 mm, simultaneously meeting both height restrictions and load-bearing requirements.