In old-city renewal, road rehabilitation, and pipeline upgrade projects, chronic issues like height discrepancies, noise, and water seepage around manholes plague municipal management. Road Middle Treasure’s 875×500×35 anti-settlement adjustable cover innovatively integrates dynamic adjustment architecture with a five-dimensional sealing system, engineered for complex conditions. Precision-cast from QT500-7 ductile iron, its patented adjustable ring structure (±50mm height range) achieves millimeter-perfect alignment with new/old road surfaces. The 35mm ultra-thin cover—reinforced with internal cross ribs—maintains load capacity while solving space constraints in cramped chambers, revolutionizing urban road refinement.
Compliant with CJ/T327 anti-settlement standards, loads transfer directly to the base via a 360° flange. The proprietary "floating seal ring" dynamically compensates for road deformation, while triple noise-canceling layers eliminate impact noise. An epoxy zinc-graphene coating ensures long-term corrosion resistance. With three breakthroughs—adjustability, silence, and zero leakage—Road Middle Treasure redefines manhole-road symbiosis.
