Engineered to handle critical flow control operations and architectural distribution networks.
Ehao Plastic Group is a premier high-tech private enterprise integrated in the R&D and production of advanced building materials, pipe fittings, and injection moulds. Recognized domestic and worldwide for polymer valve manufacturing, Ehao Plastic Group stands as an authoritative leader of PVC/UPVC ball valves in the domestic market in China.
Since its inception, the company has forged strong R&D partnerships with the Chinese Academy of Sciences and Zhejiang University, merging structural polymer research with automated factory environments. By integrating German computer automatic injection molding machines and high-speed precision tooling units, we deliver consistent mechanical characteristics and dimensional accuracy for every production run.
Every product conforms to DIN8077 and DIN8078 standards. In contrast to standard fabricators, Ehao implements a proprietary 26-step scientific testing cycle to check molecular integrity, pressure ratings, and shear strength—ensuring a 100% ex-factory pass rate.
Our standard operating protocols guarantee that the mechanical values of our injection-molded components surpass average market baselines:
Scientific Test Steps
Countries Supplied
Ex-Factory Pass Rate
8077/8078 Certified
Ehao products operate reliably in structural systems, architectural networks, and complex commercial facilities.
Key technological shifts currently reshaping international polymer fabrication and industrial procurement.
Procurement teams are shifting away from traditional petrochemical formulations. Market demand is rising for eco-friendly, bio-based PP, recycled PVC compounds, and chemical-resistant PVDF. Ehao’s R&D department works to ensure these newer materials maintain standard tensile strength and flow characteristics.
Modern production lines rely on real-time feedback. Ehao utilizes automated computer systems to monitor cavity pressure, melt flow velocity, and thermal cycling variables. This continuous tracking helps prevent defect patterns like sink marks, flash, or internal air pockets.
Many modern industrial operations now swap traditional brass and bronze alloy components for high-impact PVC and reinforced PP parts. Engineered plastics reduce overall assembly weight, resist chemical corrosion, and lower initial manufacturing and material costs.
To consistently secure a 100% ex-factory pass rate, Ehao subjects all raw materials and injection-molded components to a rigorous sequence of physical and mechanical tests:
Modern supply chain management requires consistent, high-volume production capacity and dependable quality assurance. Ehao Plastic Group supports international buyers through structured contract manufacturing services, custom mold development, and direct shipping logistics.
We manage the entire product development process in-house, from custom mold design and raw material selection to automated mass production and final testing. This single-source approach helps simplify lead times, coordinate shipping schedules, and maintain mechanical trace records.
Whether you need custom components, specific OEM modifications, or standard distribution parts, Ehao provides options tailored to match localized piping designs and pressure requirements.
Ehao Plastic Group's core performance parameters for industrial-grade injection-molded components.
| Material Class | Applicable Standards | Temperature Range | Tensile Strength at Yield | Primary Industrial Applications |
|---|---|---|---|---|
| UPVC (Unplasticized Polyvinyl Chloride) | DIN 8061, DIN 8062, ASTM D1784 | 0°C to 60°C (32°F to 140°F) | 50 - 55 MPa | Water Treatment, Chemical Process Piping, Residential Infrastructure |
| PP-R (Polypropylene Random Copolymer) | DIN 8077, DIN 8078, EN ISO 15874 | -10°C to 95°C (14°F to 203°F) | 25 - 28 MPa | Hot & Cold Potable Water Systems, Heating Network Riser Pipes | PP (Polypropylene) | ASTM D4101 | 0°C to 90°C (32°F to 194°F) | 30 - 35 MPa | Agriculture & Garden Irrigation, Waste Fluid Transport |
| ABS (Acrylonitrile Butadiene Styrene) | ISO 2580, ASTM D3965 | -20°C to 80°C (-4°F to 176°F) | 40 - 45 MPa | Piping Accessories, Enclosures, Structural Tooling Casings |
Ehao Plastic Group's product development roadmap focuses on improving efficiency and component life cycles. By using multi-cavity, hot-runner molds with optimized layouts, we reduce raw plastic scrap rates and maintain high dimensional repeatability across production runs.
Our current research and development programs explore multi-material injection molding. Combining elastomers with rigid thermoplastics helps produce durable, single-piece seals for valve assemblies, reducing the need for manual secondary sealing operations.
Additionally, we are upgrading our facilities with integrated sensors that connect to cloud-based monitoring networks. This setup tracks variables like injection speed, pack pressure, and cooling times, automatically identifying and isolating out-of-tolerance components during production.
Our sustainability program aims to optimize resource efficiency throughout the manufacturing cycle:
Detailed technical answers addressing common design, production, and logistical questions for polymer systems.
We use computer-controlled German injection molding machines to maintain precise control over temperature and injection pressure profiles. This setup helps prevent uneven shrinkage and internal stress during the cooling phase. Additionally, all mold designs incorporate cooling channels to keep mold temperatures consistent, preventing warpage and maintaining dimensional tolerances within ±0.05 mm.
Our valves are manufactured and tested in accordance with DIN 8077 and DIN 8078 standards. The threads are designed to meet ISO 228-1 or NPT specifications to ensure compatibility with global piping layouts. We test every valve under pressure before shipping to verify a 100% leak-free rate.
Yes. Ehao operates a dedicated mold-making workshop and design center. We can engineer custom injection molds using CAD drawings, technical files, or physically scanned component samples. Our design team optimizes runner paths and gate placements to support long-term, high-volume production.
The process starts by verifying incoming polymer batches using spectroscopic and moisture analysis. During and after production, components undergo dimensional, mechanical, and pressure tests, including long-term burst tests and cyclic thermal testing. This thorough testing structure helps verify mechanical stability before products leave the factory.
Standard inventory items can be processed for shipment quickly. For custom production runs or custom mold development, timelines generally range from 30 to 45 days, depending on tooling complexity and material requirements. We provide detailed timeline estimates and progress updates at each stage of the design and manufacturing cycle.
Yes. All plastic taps and plumbing fixtures intended for drinking water systems are made using virgin, non-toxic polymer resins. These materials meet the requirements of international sanitation certifications (such as NSF/ANSI 61 and equivalent European standards), ensuring they do not affect water taste, odor, or safety.
Explore more products from Ehao’s manufacturing catalog, designed for residential, commercial, and agricultural operations.
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