Founded in 2012 and headquartered in Fuyang District, Hangzhou, Chengke has long operated as a manufacturer of plastic color masterbatch, plastic defoamer, and plastic filler. The company occupies over 20,000 square meters, maintains more than ten twin‑screw extruder production lines, and holds ISO9001 and ISO14001 certifications along with National High‑tech Enterprise status. Annual production capacity exceeds 30,000 tons, with 2021 sales reaching approximately 20,000 tons.
The Soundproof Blue Pipe Fittings are manufactured using a multi‑layer co‑extrusion process. The outer layer is formulated with PP‑B polypropylene in a blue finish, providing a smooth surface with resistance to external tensions and environmental factors. An intermediate core layer incorporates mineral‑reinforced polypropylene compounds that absorb sound and vibration, while the inner layer ensures smooth drainage performance. This three‑layer structure effectively dampens flow‑induced noise from wastewater, rainwater, and industrial drainage applications, achieving noise reduction levels of up to 40% compared to conventional galvanized steel pipes.
Chengke‘s engineering team drew directly from the company’s existing expertise in ultra‑soundproof core‑layer pellet technology. The same core‑layer compounds developed for noise‑reducing masterbatch applications have been adapted to produce the sound‑insulating middle layer of the pipe fittings, delivering proven acoustic performance across diameters ranging from 50 to 200 millimeters. The product is suitable for both gravity sewer systems and pressurized drainage networks, with operating temperature tolerance up to 95°C and a working pressure rating of 1.25 Mpa.
The launch responds to a rapidly expanding market for acoustic drainage solutions. According to a report by QYResearch published in March 2025, the global Noise‑reducing Acoustic Drainage System market was valued at US$241 million in 2024 and is projected to reach US$316 million by 2031, growing at a compound annual growth rate of 3.8% during the forecast period. The broader global pipes and fittings market was valued at US$78.1 billion in 2024 and is expected to reach US$111.3 billion by 2031, registering a CAGR of 5.40%, according to 6Wresearch. Asia‑Pacific continues to lead this expansion, driven by rapid urbanization, high‑rise residential construction, and stricter building noise regulations across China, India, and Southeast Asian markets. Silent SWR piping systems are gaining particular traction in multi‑story residential buildings and healthcare facilities, where noise pollution control has become a mandatory design consideration.
The Soundproof Blue Pipe Fittings are now available through Chengke‘s distribution channels for plumbing wholesalers, construction contractors, and infrastructure developers seeking a reliable, cost‑effective solution for acoustic drainage applications. With its vertically integrated production from raw material formulation to finished fitting manufacturing, Chengke is positioned to serve both domestic and international markets requiring high‑performance silent plumbing components. The product line includes fittings with both flexible socket connections and threaded coupling options, ensuring compatibility with existing building standards and enabling efficient field installation without specialized tools.