| Portland Cement |
Raw-material preparation, clinker production, finish grinding, blending, and bulk or bagged packaging. |
Compressive strength, setting time, soundness, fineness, and chemical composition. |
GB 175-2023, Common Portland Cement |
| Hot-Rolled Reinforcing Steel Bars |
Steelmaking, continuous casting, hot rolling, rib formation, cutting, and bundling in specified grades and sizes. |
Tensile properties, bend or reverse-bend performance, dimensions, mass per metre, and surface condition. |
GB 1499.2-2024, Steel for the Reinforcement of Concrete — Part 2: Hot-Rolled Ribbed Bars |
| Flat Glass |
Float-glass production, cutting, edging, and downstream processing such as tempering, laminating, or insulating-glass assembly. |
Thickness and dimensional tolerances, optical quality, visible defects, and applicable safety-glazing performance. |
GB 11614-2022, Flat Glass; applicable safety-glazing standards depend on product type. |
| Ceramic Tiles |
Body preparation, pressing or forming, drying, glazing or surface finishing, firing, sorting, and packaging. |
Dimensions and surface appearance, water absorption, breaking strength, and resistance tests required for the product classification. |
GB/T 4100-2015, Ceramic Tiles |
| Ready-Mixed Concrete |
Automated batching and mixing, mix-design adjustment, truck-mixer dispatch, and production traceability. |
Fresh-concrete workability, delivery consistency, sampling records, and hardened-concrete strength testing. |
GB/T 14902-2012, Ready-Mixed Concrete; project requirements and other applicable standards also apply. |
| Aluminium Building Profiles |
Billet preparation, extrusion, heat treatment, surface finishing, cutting, and fabrication of architectural profiles. |
Dimensions and tolerances, mechanical properties, coating or anodizing characteristics, and surface quality. |
GB/T 5237 series, Wrought Aluminium Alloy Extruded Profiles for Architecture |
| Autoclaved Aerated Concrete (AAC) Blocks and Panels |
Raw-material batching, casting, cutting, autoclave curing, dimensional finishing, and product grading. |
Dimensions, dry density, compressive strength, moisture content, and appearance. |
GB/T 11968-2020, Autoclaved Aerated Concrete Blocks |