A Locked Grate for Rain Water
Rainwater needs a clear drainage path on sidewalks and paved areas. The Composite Gully Grate provides an opening for rainwater drainage. BMC composite resin forms the main body. A lock system is included on this model. No seal is included. It is suitable for sidewalk drainage applications.

Light, Rust-Free, and Locked
This composite gully grate has a BMC composite body that does not rust. The lock system helps reduce the risk of theft. Two common rain grate sizes are available. Custom colors are also available. It is suitable for rainwater drainage areas on sidewalks and vehicle roads. Buyers looking for a lightweight grate with a lock system can select this model.

Numbers You Can Check
Every key figure is listed in the table below. Use these specifications to select the right model.
|
Item |
Details |
|
Material |
BMC composite resin; custom color |
|
Size |
300×500×40 mm, 500×500×30 mm |
|
Lock system |
Yes; no seal |
|
Load rating |
Sidewalk A15 |
|
Use |
Vehicle road rainwater drainage |
|
Features |
BMC composite body; rust-free; lock system helps prevent theft; two common rain grate sizes; suitable for sidewalk rainwater drainage areas |

Custom Work We Accept
Your technical drawing can be used for customized production, and your prototype can also be used as a production reference. The minimum order quantity is 100 sets. A sample can be sent before mass production. Sample lead time ranges from one week to one month, depending on the customization requirements. A warranty is provided for this product, with the warranty period specified in the contract.
How We Hold Quality
A BMC composite mixing area is located inside our factory. Workers control the resin mix, fiberglass mix, and curing agent dosage during production. These controls help maintain consistent grate strength and corrosion resistance. Workers also check the lock holes, other holes, and color of each batch. Buyers can install the grate after delivery.
We run three levels of quality control: incoming material spot checks, process patrol checks, and finished goods factory checks. Quality checks are performed on a fixed schedule. We spot-check products and raw materials during the inspection process. Third-party inspection is welcome. A full inspection is not performed before packing; spot checks are carried out before packing. Quality is monitored throughout the process. Material documentation and inspection data are available to buyers and can be used to support project approval.
Questions Buyers Often Ask
Q: Does the grate rust?
A: No. The BMC composite body does not rust.
Q: Does the lock system help prevent theft?
A: Yes. The lock system helps reduce the risk of the grate being stolen.
Q: Which sizes are available?
A: 300×500×40 mm and 500×500×30 mm are both available.
Q: What is the minimum order quantity?
A: The minimum order quantity is 100 sets.
If this Composite Gully Grate fits your project, contact us. A salesperson and a back-office worker will communicate with you directly. We can help you select the appropriate model and manage purchasing risks.
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