Guangrao Prefabricated House Assembly

Guangrao County has established a collaborative development pattern between enterprise production and policy regulations in the field of prefabricated house assembly, possessing a complete industrial chain foundation and technical support.

1. Core Production Enterprises and Technical Capabilities

1. Shandong Hongkun Zhugong Technology Co., Ltd. serves as a leading enterprise in Guangrao County's prefabricated assembly sector, equipped with 2 PC assembly lines and 2 commercial concrete production lines, along with over 40 sets of laboratory testing equipment. Its annual production capacity covers 300,000 cubic meters of commercial concrete and 50,000 cubic meters of residential PC components. Its product range includes core components for prefabricated buildings such as prefabricated composite slabs, shear walls, interior and exterior wall panels, stairs, and balcony bay windows, extending to municipal infrastructure areas like underground integrated pipe corridors, inspection wells, and septic tanks, aligning with the national industrial orientation of 'prefabricated building component materials suitable for prefabricated construction'.
2. Chengzhaoxi Prefabrication Factory in Beicheng Village, Guangrao County, as an individual business, focuses on the manufacturing and sales of cement products, primarily producing prefabricated components suitable for low-rise rural buildings, such as prefabricated beams and columns, meeting localized and small-scale demands.

2. Policy Regulations and Standard Systems

The 'Technical Guidelines for the Construction of Prefabricated Rural Houses' issued by Shandong Province provide a technical framework for Guangrao County's prefabricated house assembly:

• Definitions and Principles: Clearly defines prefabricated rural houses as rural residential buildings assembled on-site from factory-prefabricated or partially prefabricated components, emphasizing five principles: modern functionality, structural safety, cost-effectiveness, environmental friendliness, and harmonious aesthetics.
• Structural Systems: Recommends three types of systems: prefabricated concrete shear wall structures, EPS module cast-in-place concrete structures, and lightweight steel frame structures, providing detailed design parameters (such as concrete strength grades and steel bar connection methods) and construction specifications (such as component lifting sequences and joint connection sealing requirements) to ensure the seismic resistance and durability of the house 'skeletons'.
• Applicable Scenarios: Combining Guangrao County's climate (temperate monsoon climate), topography (Yellow River alluvial plain), and traditional architectural characteristics, the guidelines guide the rational application of prefabricated components in rural houses, such as adopting lightweight steel frame structures to adapt to soft soil foundations in plain areas or utilizing EPS modules to enhance the insulation performance of northern rural houses.

3. Application Scenarios and Development Directions

Guangrao County's prefabricated house assembly technology has covered areas such as rural housing, municipal pipe corridors, and public facilities. In the future, it can further align with policy guidance to promote the application of prefabricated components in green rural house renovations and earthquake-resistant housing projects, while reducing component production costs through technological iterations by enterprises like Hongkun Zhugong, thereby increasing the popularity of prefabricated buildings in the county market.