梅花 pipes feature a porous monolithic structure with good rigidity and even stress distribution. The product has a low friction coefficient on the inner wall, allowing for easy and quick cable installation, and is simple to construct. It has multiple holes for pre-drilled pipe openings, enhancing the utilization of communication holes. The product is suitable for a wide temperature range (+80 to -40°C), making it usable in both tropical and cold regions. The joints use a sleeve structure, enabling tool-free connections between pipes for ease of installation and maintenance. The service life of the梅花 pipes exceeds 30 years under burial conditions. Performance specifications: The pipes have a uniform and consistent color, which is white, but can also be customized to other colors upon customer request. The pipes are smooth and flat with a uniform color, and no deformation or warping is allowed. There should be no cracks, damage, or perforations on the inner and outer pipe walls. The markings should be durable and easily identifiable.