Overview: Plastic-Coated Stainless Pipe for Smart Water Systems
Modern water distribution networks — from residential risers to municipal mains — face growing pressure to deliver safe, contamination-free water while resisting corrosion in harsh or buried installation conditions. Guangdong Yuehua Stainless Steel Profiles Co., Ltd., operating under the Yuehua Stainless Steel brand, manufactures a Stainless Steel Plastic-Coated Pipe engineered to meet both demands at once: structural durability from the stainless steel core, plus an external protective coating for environments where underground, seawater-adjacent, or chemically exposed conditions accelerate material degradation.
This product sits within the company's broader stainless steel pressure pipe lineup, alongside water supply and drainage pipe, gas pipe, and fire protection pipe lines, all produced for water supply, drainage, direct drinking water, petrochemical, food and beverage, HVAC, fire protection, and irrigation pipeline systems.
Engineering Behind the Dual-Layer Protection
Material Composition and Coating
The Stainless Steel Plastic-Coated Pipe combines a stainless steel base pipe — available in SUS 304, SUS 304L, or SUS 316L — with an external coating. According to published product specifications, the coating material is polyvinyl chloride; corporate materials also reference polyethylene or epoxy coating as additional protective external coating options. This dual-layer construction is designed to address external corrosion from underground, seawater-adjacent, or chemically exposed installation environments, while the stainless steel core resists internal scaling and water contamination.
Dimensional specifications include an outer diameter ranging from 16 to 325 millimeters, wall thickness from 0.6 to 4.5 millimeters, and a standard length of 6 meters, all available in customized configurations according to project requirements.
Connection Options and Pressure Performance
Installation flexibility is addressed through four connection methods: Double Press, ring pressing, grooved, and welded. The Double Press connection system is paired with high-performance sealing rings and is rated for thin-walled pipe operating pressure exceeding 2.5 MPa. These mechanical connection options support quick, reliable installation without requiring on-site welding at every joint, helping reduce the leakage risk associated with labor-intensive welded and threaded connections.
Under normal use conditions, the stainless steel medium carries a service life of up to 70 years, a figure consistent across Yuehua's stainless steel pressure pipe product line.
Why Smart Water Systems Benefit from This Solution
Addressing Core Industry Pain Points
Water distribution systems — particularly those integrated into metering and monitored distribution infrastructure — face recurring challenges that the Stainless Steel Plastic-Coated Pipe is engineered to address:
- External corrosion from underground, seawater-adjacent, or chemically exposed installation environments, which can compromise pipe integrity over time
- Scaling and contamination in water conveyance systems, particularly where lower-grade materials allow impurity buildup
- Leakage and installation inefficiency associated with conventional welded and threaded piping networks
By combining a corrosion-resistant stainless steel core with an external protective coating, the product is designed to reduce the frequency of pipe replacement and maintenance interventions that are common with materials lacking comparable corrosion resistance.
Relevance to Smart Metering and Secondary Water Supply Infrastructure
Smart water systems increasingly rely on compact, leak-resistant piping that integrates cleanly with metering and distribution hardware. Within Yuehua's broader connection fittings portfolio, Double Press fittings — compatible with the plastic-coated pipe line — are specifically adapted for residential water supply metering systems, smart water meter box systems, and secondary water supply systems, as well as stainless steel pump room systems. This compatibility allows the plastic-coated pipe and its Double Press connections to function as part of an integrated, hygienic water distribution chain suited to buildings that rely on monitored, metered water delivery.
Manufacturing Foundation and Quality Assurance
A Long-Standing Manufacturing Base
Guangdong Yuehua Stainless Steel Profiles Co., Ltd. traces its origins to 1991, when the company began as Shantou Yuehua Stainless Steel Floral Tube Profile Factory in Shantou, Guangdong Province. Today, the company's self-owned industrial campus spans 150 mu — approximately 100,000 square meters — with more than 50,000 square meters of production workshops and over 10,000 square meters of warehousing and logistics space. Annual production capacity reaches 80,000 tons of stainless steel pipes and fittings, supported by a minimum inventory holding of 500 tons of finished goods and 2,000 tons of raw coil for rapid order fulfillment.
Raw material sourcing is anchored in strategic partnerships with POSCO, TISCO, and Yongjin, supporting consistent access to SUS 304, SUS 304L, SUS 316, and SUS 316L material grades.
Technical Processes and Certifications
Manufacturing of the plastic-coated pipe line incorporates online solution treatment, polishing, and passivation processes, along with the application of the external protective plastic coating. Technical capability is backed by more than 30 national utility model and invention patents covering areas such as Double Press connection geometry, sealing ring groove design, online solution treatment process control, and plastic coating adhesion methods.
The product line complies with applicable standards including GB/T 19228.2-2011, GB/T 12771-2008, CJ/T 151-2016, GB/T 33926-2017, and DIN EN 10312:2002+A1:2005, and carries ISO, TS, and HPPI certification. At the corporate level, Yuehua Stainless Steel maintains ISO 9001 Quality Management System, ISO 14001 Environmental Management System, and ISO 45001 Occupational Health and Safety Management System certifications, along with CE marking for pressure equipment, RoHS compliance, China National Building Materials Certification for convenient products, a Pressure Pipe Element Production License, and a Drinking Water Product Hygiene Safety License.
The brand itself — recognized as a China Well-Known Brand and holder of the Guangdong Famous Trademark — reflects more than three decades of continuous operation in the stainless steel piping sector.
Industry Applications
The Stainless Steel Plastic-Coated Pipe is manufactured for use across residential water supply, commercial buildings and hotels, shopping malls, food and beverage facilities, hospitals, petrochemical facilities, chemical-related applications, municipal pipeline systems, underground pipeline systems, HVAC systems, fire protection systems, irrigation systems, and direct drinking water systems. Delivery is supported through direct manufacturing, OEM/ODM supply, and custom manufacturing models, with standard delivery times of 30 to 60 days after payment and customized packaging available for distributor and project-specific requirements.
Conclusion
For engineering contractors, facility managers, and distributors evaluating piping solutions for smart, metered water infrastructure, the combination of stainless steel durability, external coating protection, patent-backed connection technology, and documented certification positions Yuehua Stainless Steel's Plastic-Coated Pipe as a technically grounded option for projects requiring long-term corrosion resistance, hygienic water conveyance, and compatibility with modern metering and secondary water supply configurations.
www.yuehuasus.com
Guangdong Yuehua Stainless Steel Profiles Co., Ltd
