Zhengzhou Yayuan Technology’s PVC Perforated Overflow Pipes Witness Surging Orders, Fully Securing Supply of Sponge City Supporting Products

Zhengzhou Yayuan Technology's PVC Perforated Overflow Pipes Witness Surging Orders, Fully Securing Supply of Sponge City Supporting Products

Recently, good news came from the production frontline of Zhengzhou Yayuan Technology: the company’s independently developed and produced PVC perforated overflow pipe series has successively won orders for multiple engineering projects inside and outside the province, covering sponge city rainwater collection and utilization systems, municipal drainage pipe network renovation, sunken green space supporting facilities and other fields. The production workshop is operating at full capacity and working overtime to fulfill orders and ensure on-time product delivery.

As a professional enterprise deeply engaged in the sponge city construction field since its establishment in 2013, Zhengzhou Yayuan Technology has always been committed to the R&D, production and sales of rainwater drainage and collection, plastic pipes and fittings as well as supporting products. With a registered capital of 10.01 million yuan, the company has passed ISO9001, ISO14001, ISO45001 and other system certifications, accumulated 38 patents and 18 software copyrights, and participated in the formulation of a number of industrial technical standards. Relying on excellent product quality and a perfect service system, the “Yayuan” brand series of products have won wide acclaim in the market.

The company has cooperated with authoritative institutions such as Tongji University Architectural Design Institute and East China Architectural Design & Research Institute, and completed a large number of national key projects including Zhengzhou International Garden Expo Park, Xuchang Science and Technology Museum, Beijing Top Science Park, Chongqing High-speed Railway Station, accumulating rich practical project experience. In recent years, the company has actively expanded overseas markets, with the sales revenue of its foreign trade department increasing by about 28% year-on-year in 2025, and successfully explored overseas markets in Southeast Asia, the Middle East and Europe. Located in Zone B, Wanyang Mass Innovation City Industrial Park, Zhengzhou Airport Economy Zone, the company’s factory enjoys significant geographical and transportation advantages, providing a strong guarantee for efficient

product distribution

The concentrated growth of PVC perforated overflow pipe orders marks a further improvement in the company’s product competitiveness and market recognition in the field of sponge city supporting pipes. Adhering to the corporate philosophy of “Excellent Quality, Reliable Products, Project Safety” and the tenet of “Devoting to Environmental Protection, Serving People’s Livelihood”, Zhengzhou Yayuan Technology will stay on the path of technological innovation and contribute more “Made in Henan” strength to sponge city construction.

[Yayuan Technology] PVC Perforated Overflow Pipe — The Professional Choice for Sponge City Supporting Pipes Product Overview

Zhengzhou Yayuan Technology’s PVC perforated overflow pipe is a functional plastic pipe specially designed for sponge city rainwater management, drainage systems and various infiltration projects. Made of high-quality PVC (polyvinyl chloride) resin, the product is equipped with evenly arranged water seepage holes on the pipe wall and an overflow functional structure, featuring dual functions of infiltration drainage and excessive rainwater diversion. It is widely used in low-impact development (LID) facilities such as sunken green spaces, rain gardens, green roofs and drainage pipe network nodes. Adopting a one-time integral molding process, the pipe body is sturdy and durable, with uniform holes around for convenient infiltration and drainage.

Technical Parameters

Parameter Item	Specification Index
Material	PVC (Polyvinyl Chloride)
Nominal Outer Diameter	110mm, 160mm, 200mm, 315mm and other optional specifications
Length	4m / 6m (customizable according to customer requirements)
Wall Thickness	Implemented in accordance with national standards based on pipe diameter, meeting ring stiffness SN8 and above
Perforation Form	Plum blossom-shaped uniform perforation, hole diameter and opening rate customizable according to engineering requirements
Working Pressure	Suitable for gravity flow drainage systems
Applicable Temperature Range	-10℃ ～ 60℃
Connection Method	Socket connection / solvent adhesive connection
Color	Gray / white (customizable)

Core Advantages

High-quality raw materials, durable — Produced with brand-new PVC resin, the pipe has excellent corrosion resistance, acid and alkali resistance and anti-aging performance. It is not easy to age or deform when buried underground for a long time, with a long service life.
Scientific perforation, efficient infiltration — The pipe wall adopts a plum blossom-shaped uniform perforation design, with a hole diameter of usually 8-10mm. On the premise of ensuring the pipe body’s ring stiffness, the infiltration efficiency is maximized. Rainwater can naturally infiltrate into the surrounding soil from the hole wall, realizing the core functions of “infiltration, stagnation, storage, purification, utilization and drainage” of sponge cities.
Collaborative overflow, safety guarantee — When the water storage capacity of the infiltration system reaches saturation, the PVC perforated overflow pipe can cooperate with overflow wells or slow-release overflow devices to smoothly drain rainwater exceeding the water storage capacity into the municipal pipe network or downstream system, preventing facility overload and urban waterlogging, and realizing precise flow control and slow-release peak shaving.
Lightweight and easy to install, efficient construction — The product is light in weight and adopts socket or adhesive connection, which is convenient and fast for construction, significantly reducing engineering labor costs and construction period.
Environmentally friendly and non-toxic, green and safe — PVC material is non-toxic and pollution-free, and will not cause secondary pollution to soil and groundwater when buried underground for a long time, in line with the green and environmental protection development concept of sponge city construction.

Application Scenarios

Sunken green space / biological retention facility — Buried at the bottom of the green space to collect infiltrated rainwater, and ensure smooth drainage through the overflow function during rainstorms to prevent waterlogging damage to green plants.
Rain garden / ecological grass planting ditch — As an important channel of the drainage system, precisely control the rainwater discharge rate and ensure purification and infiltration efficiency.
Green roof / rooftop garden — Precisely control and drain rainwater in the water storage layer, effectively reduce building load pressure, and adapt to refined management needs.
Infiltration ditch / drainage pipe network node — As an intelligent inlet and outlet channel of the rainwater system, cooperate with upstream and downstream pipe networks to shave peaks and stagger peaks, preventing instantaneous overload.
Regulation and storage tank / ecological pond — Cooperate with regulation and storage facilities for refined water level management to improve regulation and storage utilization rate and operational safety.
Old community / municipal pipe network renovation — Low-cost intelligent transformation node to quickly improve the extreme rainfall response capacity of old drainage systems.