Guangzhou Prefabricated House Components

Guangzhou has established a full-process supervision system for prefabricated house components through measures such as information collection, quality control, and policy incentives, promoting the high-quality development of prefabricated buildings.

Information Collection and Traceability: Digital Management Ensures Traceability

Guangzhou relies on the real-time data integration between the "Guangzhou Concrete Prefabricated Component Information Collection System" and the "Guangzhou Construction Engineering Building Materials Supervision and Service Platform" to achieve transparency in the full lifecycle information of prefabricated components. Production enterprises are required to register and upload basic enterprise information, quality certification documents, and supply details. The system generates a "delivery note" with a QR code, which is delivered to the project receiving unit along with the materials. Construction units and supervision units confirm and review each batch of components through mobile apps or PCs, ensuring traceable material sources and controllable quality. This mechanism effectively resolves information gaps in traditional management and provides technical support for quality traceability.

Full-Process Quality Control: Covering the Entire Project Cycle

1. Project Preparation Phase: Clearly define the scope of prefabricated building implementation, requiring all residential buildings and land transfer projects to fully adopt prefabricated technology. For projects that are not feasible due to technical constraints, expert evaluations must be organized and submitted to local authorities for review, resulting in exemption opinions to ensure policy flexibility.
2. Design Phase: Design units are mandated to use BIM technology for digital design, adhering to the principle of "fewer specifications, more combinations" to optimize the division of prefabricated components and clarify assembly rate indicators. Construction units must complete pre-evaluations before construction drawing reviews, and projects that do not meet standards must provide exemption justifications.
3. Component Production Phase: Production enterprises must have a comprehensive quality management system and accelerate intelligent transformation, applying IoT, big data, and other technologies to enhance production precision. Industry associations promote industry self-regulation through star ratings and strengthen technical team building.

Policy Incentives and Risk Management: Strengthening Quality and Green Requirements

For prefabricated building projects enjoying floor area ratio incentives, Guangzhou requires developers to purchase "quality latent defect insurance" and "green building performance insurance" and entrust independent TIS agencies for full-process risk control. TIS agencies must conduct at least two surprise inspections of concealed works at critical nodes such as prefabricated component installation to ensure construction quality. Meanwhile, information on each prefabricated component must be integrated into the government supervision system, achieving full-chain traceability from raw materials to factory certificates. Projects must obtain green building evaluation labels and submit inspection reports within one year of completion, compelling enterprises to enhance green construction standards.

Through technological empowerment, full-process supervision, and policy incentives, Guangzhou has established a quality assurance system for prefabricated components, providing replicable experience for the large-scale and standardized development of prefabricated buildings.