首页 › 阀门·龙头·水暖五金
阀门·龙头·水暖五金
铜阀与龙头的采购核心是材质而非外形：常用水路用 CW617N/HPb59-1 易切削黄铜，饮用水工况要上低铅 DZR（CW511L）；再往下比拼陶瓷阀芯质量、壁厚，以及工厂是否自熔自铸。南安一带具备自有铸造的工厂通常是成本与一致性最优的一档。
产业带
福建南安（泉州）——全国最大的铜阀门与水暖龙头产业带；浙江玉环——铜阀与管件；浙江慈溪/台州——塑钢与铜混合卫浴五金
典型产品
材质
表面工艺
报价会引用的标准
规格参考表
| 参数项 | 需要约定的内容 |
|---|---|
| Pressure | PN10 / PN16 / PN25 by model; test pressure 1.5x nominal |
| Temperature | -20 to 120 °C standard; hot-water seats differ |
| Thread | G 1/2 – G 4 (ISO 228), NPT on request |
| Handle | Butterfly, lever, T-handle; lockable versions available |
| Cartridge | Ceramic Ø25/35/40 mm, 500k cycles typical claim |
| Lead content | Declare Pb% on the PO for drinking-water duty |
| Testing | Air/water leak test per pcs, chrome salt-spray 24–96 h |
本品类已收录工厂
本品类暂未发布工厂页。上方规格参考表可直接用于询价；工厂页后续会挂在本品类 URL 之下。
买家常见问题
Which brass valve is safe for drinking-water installation?
Specify low-lead DZR brass (CW511L / HPb57-4 type) with the actual lead percentage on the purchase order and require the factory to declare it per batch; if the destination market legally requires NSF 61 or equivalent, request the certificate with the matching model before payment rather than after production.
Why do identical-looking faucets have a 2x price difference?
Three items usually explain it: wall thickness and casting porosity rate, cartridge grade and cycle life, and plating layer count (single nickel vs copper+nickel+chrome). Ask for weight per piece, cartridge cycle claim and salt-spray hours; those three numbers close most of the gap.