Complete Raw Material Guide for Shower Sets and Basin Mixers
2024-04-09
The performance and lifespan of bathroom products (such as faucets, shower systems, hand showers, and overhead showers) largely depend on the raw materials used. Different countries and markets employ different material standard systems, such as China's GB standard, Europe's EN standard, and the United States' ASTM/UNS standard.
This article compiles a global model comparison of common copper materials used in the bathroom industry, stainless steel grade specifications, zinc alloy specifications, and common shower head material grades, presented in a table format for easy and quick reference.
This article compiles a global model comparison of common copper materials used in the bathroom industry, stainless steel grade specifications, zinc alloy specifications, and common shower head material grades, presented in a table format for easy and quick reference.
I. Global Copper Material Comparison Table in the Sanitary Ware Industry
| Chinese Standard (GB) | European Standard (EN) | American Standard (ASTM / UNS) | German Standard (DIN) | Copper Content | Typical Applications |
| HPb59 / H59 | CW617N | C37700 | CuZn39Pb2 | 57–59% | |
| H58 |
|
C38500 | CuZn39Pb3 | 56–58% | |
| H62 |
|
C26000 | CuZn37 | 60–63% | |
| H65 |
|
C26800 | CuZn33 | 63–66% | |
| H70 | CW505L | C26000 | CuZn30 | 68–71% | |
| H90 | CW501L |
|
|
88–90% |
II. Dezincification Resistant Brass
DZR (Dezincification Resistant Brass) is mainly used to prevent dezincification corrosion caused by water quality issues and is widely used in European drinking water systems.
| Standard System | Model | Features | Typical Bathroom Products |
| EN | CW602N | Resistant to Zinc Dezincification Corrosion | Faucet Body, Valve Body |
| ASTM | C27450 | High Corrosion Resistance | Pipe Fittings |
| EN | CW511L | Corrosion Resistance | Shower Mixer Valve |
IV. Stainless Steel Material Model Comparison
Stainless steel is increasingly used in the bathroom industry, especially in shower heads, stainless steel faucets, and shower columns.
| Model | Standard | Composition Characteristics | Corrosion Resistance | Typical Products |
| 201 | AISI | High Manganese | Medium | Economy Shower Products |
| 304 | AISI |
|
High | Good Quality Shower Products |
| 316 | AISI | Molybdenum Contains | Very High | Bathroom Fixtures in Coastal Areas |
| 316L | AISI | Low Carbon 316 | Very High | High-End Bathroom Fixtures |
VII. Copper Material Requirements for Drinking Water Certification
Different countries have different requirements for drinking water contact materials.
| Certification Country | Region Common Copper Materia | Requirements |
| NSF 61 / NSF 372 | USA | C69300, C87850 |
| CUPC | North America | Lead-free copper material |
| KTW / DVGW | Germany | CW602N, CW617N |
| WRAS | UK | CW617N, DZR |
| WaterMark | Australia | CW617N, lead-free copper |
| ACS | France | CW617N, CW602N |
Conclusion
The regulations of global drinking water safety is becoming comprehensive, the bathroom product materials are trending towards lead-free and corrosion-resistant materials. While certification systems in different countries may have different names, their core objective remains the same: to ensure that materials in contact with drinking water do not contaminate water quality.
At the same time, Rainparty offers a diverse selection of products—including high-pressure showerheads, water-saving models, and multi-functional shower systems—designed to meet the varying water pressure conditions and regulatory requirements of different countries and regions. Whether in high- or low-pressure environments, we provide solutions that deliver stable performance and exceptional comfort, ensuring a safe, reliable, and high-quality bathroom experience for customers worldwide.
Rainparty is capable of manufacturing products using low-lead brass, lead-free brass, and stainless steel, supporting the growing demand for safe and compliant plumbing solutions. Our products are certified to meet major international standards, including WaterMark (WMK), WRAS, and ACS, and are also compliant with KTW requirements for drinking water safety.
With a strong focus on material control and certification compliance, Rainparty provides reliable solutions for global bathroom and plumbing markets.
With a strong focus on material control and certification compliance, Rainparty provides reliable solutions for global bathroom and plumbing markets.
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