Every building that relies on mechanical ventilation — from semiconductor cleanrooms and pharmaceutical labs to commercial offices and underground parking structures — depends on a ductwork system that moves air quietly, efficiently, and reliably. Yet air duct design is one of the most underestimated disciplines in building engineering. A poorly designed duct system wastes fan…
Selecting the right duct material for fire-rated HVAC systems is one of the most consequential decisions engineers and procurement managers face in commercial and industrial construction. A single wrong choice can lead to code violations, costly retrofits, or catastrophic fire safety failures. Among the leading contenders — PP flame retardant duct, PVC duct, and metal…
PP pipe extrusion molding process characteristics As a generation of plastic ducts, PP ducts have a relatively high market share in the early 21st century. However, with the innovation and development of technology, PP ducts have been gradually eliminated by the market. As a third-generation product, PPR ducts add about 5-10% of PE materials in the production process…
