Quality Assurance

GDP is a leader in the drainage solution market for developing products which undergo testing and quality control processes which is based on elements of AS/NZS ISO 9001.  This enables GDP to ensure it can meet the needs of the market, whilst providing the same quality products consistently and remain compliant to the relevant Australian Standards.  

In addition to quality control systems, GDP undertake in-house load testing to ensure products are meeting the requirements expected by our customers and Australian Standards.  The same rigorous testing is undertaken on new products that are developed in-house, prior to market release.

The end result of both external and in-house testing and quality procedures is a high quality product which is continuously improved from the data and information gathered.  This enables GDP to provide products that provide extended life, wear characteristics and functionality improvements.  The products are suitable for the applications and environments they are designed for.

Using sub standard products can lead to a noticeable reduction in the life span, which may fail the operational loads that the products are designed for. This could result in additional works to carry out repairs and further repercussions.

Great Products - Great Service - Great Advice

GDP are here to provide quality products, on time and back it up with exceptional customer support.


Australian Standard Compliance

GDP’s range of grates and associated products are compliant to the relevant Australian Standard(s) that the product falls under. For any questions regarding compliance, please contact GDP to discuss your enquiry.



If you require a certificate of conformance for your project, our friendly sales team are able to provide this with your order.

This is commonly requested by contractors and councils when finalising projects.

Product and Sales Support

Do You Have any Questions?

Submit a quote or an enquiry form to get in touch with our team!