Explore our foundational range of heavy-duty PVC valves, octagonal compact valves, and garden bibcocks engineered to exceed ASTM & DIN standards.
Ehao Plastic Group is a premier high-tech private enterprise integrating the rigorous research, development, and scalable production of building materials, specialized industrial pipe fittings, and high-performance injection moulds. Distinctively recognized as a market leader in domestic and international PVC/UPVC ball valve sectors, our operational ethos merges academic theory with robust manufacturing execution.
Since our inception, our technological foundation has been fortified by direct support from the Chinese Academy of Sciences and Zhejiang University. This collaborative synergy ensures that our polymer formulations benefit from cutting-edge research in chemical resistance, molecular elasticity, and stress tolerance.
"By integrating advanced computer-automated injection molding machinery direct from Germany with a strict 26-step scientific testing protocol, we secure a definitive 100% ex-factory pass rate. Our technological indices fully conform to global DIN8077 and DIN8078 standards."
Guided by our core values—"honest, dedicated, innovation and return"—Ehao Group implements a comprehensive business architecture focused on quality for survival, science for development, and unparalleled service for customer credit. We empower your fluid systems with longevity and unmatched cost-to-performance metrics.
Fully automated production lines and high-precision computer-driven injection systems ensure dimensional tolerances are kept within micron margins.
Every valve and fitting undergoes strict pressure, chemical compatibility, structural fatigue, and burst testing before leaving our facilities.
Continuous collaboration with top scientific institutions guarantees that our custom polymer blends remain at the global forefront.
Export Countries & Regions
Ex-Factory QC Pass Rate
Scientific Test Steps
8077/8078 Compliant
From micro-irrigation systems to heavy industrial municipal drainage infrastructure, our products deliver consistent pressure flow dynamics.
Discover the physical properties, technological milestones, and international certifications that distinguish Ehao Group products.
Global logistics networks require mechanical systems to adapt to dynamic environments. Ehao specializes in tailored industrial solutions, including customization of plastic moulds, processing of supplied materials, and CAD/CAM sample replication.
Our solutions target minimization of pressure drop across piping connections, lowering energy expenditure on pump systems across vast layouts.
We meet complex international codes with ease. Our product catalogs comply with DIN 8077/8078, ASTM D2466, ASTM D1785, and NSF/ANSI 61. This ensures that whether you are installing in Europe, the USA, or Southeast Asia, the chemical safety of municipal water is never compromised.
Equipped with high-precision tooling shops, we specialize in high-efficiency injection mold designs. From simple 90-degree elbows to multi-port double union ball valves, our machinery adjusts to fit the exact polymer density required by local environmental stresses.
Partnering with the Chinese Academy of Sciences to formulate high-impact, lead-free PVC-U compounds for drinking water systems.
Implementing computerized automatic injection molding systems from Germany to keep tolerances under 0.05mm.
Developing a closed-loop quality control model testing raw polymer flow rate, density, wall-thickness parity, burst pressure, and thermal degradation.
Developing bio-attributed PVC materials and integrating RFID tracking into heavy infrastructure fittings for automated inventory maintenance.
In-depth, expert-level insights into purchasing, installing, and managing PVC drain fittings and valve components.
DIN 8077 and 8078 are German industrial standards that specify the dimensions, tolerances, and chemical-mechanical testing limits for polypropylene and thermoplastic pipes. ASTM (American Society for Testing and Materials) standards, such as ASTM D1785 (Schedule 40/80) and D2466, dictate dimensioning in nominal inch sizes. Ehao Plastic Group supports both systems to serve both European-style metric networks and American-style imperial networks seamlessly.
Our collaborations allow us to study polymer molecular alignment at a molecular level. This enables us to formulate PVC with enhanced chain entanglement, leading to higher impact resistance, better UV stability, and robust resistance to environmental stress cracking (ESCR) compared to standard commercial-grade PVC.
Double union ball valves feature dual union ends. This design allows engineers to isolate and disconnect downstream piping for maintenance or repair without removing the entire valve body from the line. Compact valves are ideal for tight spaces and cost-effective residential water systems, whereas double union structures are the standard for chemical processing, aquaculture, and water purification facilities.
Our testing checks chemical composition purity, gelation levels, dimensional precision using laser micrometers, hydraulic burst resistance, sustained hydrostatic pressure over 1000 hours, heat reversion rates, seal torque tests, and cycle endurance tests on the ABS and stainless steel handle mechanisms. This guarantees a 100% ex-factory pass rate.
We maintain an in-house tooling division equipped with high-precision CNC machines. Clients can send us technical drawings (STEP, DWG, or IGES formats), samples, or basic mockups. Our engineering team conducts flow simulation analyses to optimize injection gate placement before manufacturing the physical mold, which reduces cycle times and parts stress.
Premium solutions for drinking water networks, industrial chemical drainage, and agricultural irrigation.
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