VIGA水龙头制造商 
最近, the Nanjing Municipal Bureau of Quality Supervision released the results of the 2017 residents’ home improvement products quality spot check, 涉及水龙头, 不锈钢水槽, bathroom brackets and paint-free boards. The pass rate of faucets is the lowest at 67.5%, and the pass rate of faucets priced at 100 yuan and below is only 14.3%.
水龙头的不合格率 20$ is as high as 85.7%
之前, the Nanjing Municipal Bureau of Quality and Technical Supervision commissioned the Nanjing Product Quality Supervision and Inspection Institute to conduct random inspections on 40 batches of faucet products sold by production enterprises, circulation areas and e-commerce platforms in Nanjing. 检查后, 27 batches were qualified and 13 batches were unqualified, 通过 67.5%.
Nanjing Quality Supervision Bureau classified the test results according to the product source and price range, and the results were eye-catching.
这 40 batches of tap products sampled this time were 20 批次, 19 批处理和 1 batch sampled from physical stores, 电子商务平台和制造公司, 分别. 他们之中, the qualification rate of physical store products is the lowest at 55%; the qualification rate of e-commerce platform products is 78.9%; and the qualification rate of production enterprises is 100%.
从产品价格的角度来看, 产品的通过率 70$ and above is 100% (unqualified rate 0%), and the pass rate of products between 20$ 和 70$ 是 85.7% (unqualified rate 14.3%). The pass rate of products between 20$ 和 40$ 是 62.5% (the unqualified rate is 37.5%), 以及产品的通过率 100 yuan及以下是 14.3% (the unqualified rate is 85.7%).
2 batches of faucet metal pollutants precipitation exceeded the standard
This sampling inspection was carried out in accordance with GB 18145-2014 “Ceramic Sheet Sealing Faucet” 和GB 25501-2010 “Limited Value of Faucet Water Efficiency and Water Efficiency Grade”. 在 13 批次不合格的产品, the unqualified items mainly related to surface corrosion resistance, 水效率等级, 流量均匀性和材料, among which 2 batches of products were detected to exceed the standard of metal pollutant precipitation (带领).
此外, this sampling inspection also refers to the standard of QB/T 1334-2013 “General Technical Conditions for Faucets”, and carried out the sealing performance of the faucet after freezing for 4 小时, 8 小时, 12 小时, 和 24 hours at a low temperature of -10°C. Risk monitoring. 检查后, 33 batches of faucets meet the standard requirements, with a compliance rate of 82.5%.
检查项目分析
①Flow uniformity and water efficiency grade
Flow uniformity and water efficiency grade Among the samples sampled this time, 1 batch of water efficiency grade was unqualified, 这个项目的通过率是 97.5%; 3 batches of flow uniformity were unqualified, 这个项目的通过率是 92.5%. These two items are the requirements for the energy efficiency of the water tap, and the uniformity of the flow is the prerequisite for evaluating the water efficiency grade of the tap. Excessive flow of water nozzles will cause waste of water resources, which is not conducive to the implementation of my country’s energy conservation and emission reduction policies.
②表面腐蚀性
Among the samples sampled this time, 12 batches of surface corrosion resistance were unqualified, 这个项目的通过率是 70%. Products with unqualified surface corrosion resistance are prone to rust during use, which will not provide protection and affect the appearance and use of the product. The surface corrosion resistance of the faucet not only depends on the company’s electroplating process, 但还涉及各个方面，例如材料, 铸造过程, 抛光和预处理.
③Precipitation of metal pollutants
Among the samples sampled this time, 2 batches of metal contaminants were unqualified, 这个项目的通过率是 95%. 金属污染物的降水与人类健康有关, 特别是人体中铅的积累, which can cause long-term health risks in the human body and affect the normal physiological functions of the human body. The low-grade copper grades of faucet products and the substandard production process of the enterprise are all causes of excessive precipitation of metal pollutants.
(Unqualified samples precipitated by gold contaminants)
④物质
Among the samples sampled this time, 7 batches of materials were unqualified, 这个项目的通过率是 82.5%. 一些产品使用锌合金, a corrosive material whose price is only 1/3 of copper alloy. 该材料易于腐蚀, 不仅会影响外观, but also reduces the strength of the faucet, causing water leakage and cracking after a period of use. 与铜合金相比, zinc alloys are cheap and easy to process. In order to control costs and reduce processing links, some companies use zinc alloys instead of copper alloys to make greater profits.
⑤ Risk items (温度测试)
This sampling conducted a temperature test, 那是, freezing the water nozzle at -10°C for 4 小时, 8 小时, 12 小时, 和 24 hours to test the sealing performance. 测试后, 在 40 batches of taps sampled this time, 总共 7 batches of faucets have leaked in a low temperature environment.
现在, there is no corresponding national standard for the freezing temperature value of faucets. 在正常情况下, the faucet will not be frozen and cracked at a few degrees below zero, but after low-temperature freezing, due to the expansion and condensation of water in the valve core, the valve core will be squeezed and stressed. 连接会泄漏. 为了节省成本, some manufacturers use poor-quality brass as the casting material for the faucet. The ductility of the metal is greatly reduced, and it is easy to freeze at low temperatures and almost breaks when it is knocked.
(Sample with unqualified freeze-thaw sealing performance)
消费者建议
①Avoid buying zinc alloy faucets
Zinc alloy is a corrosive material, so you should avoid this type of product when purchasing a faucet. 可以根据产品的内腔进行区分. Copper materials are generally castings, and the inner wall of the product is not very flat, while zinc alloys are injection-milled, the inner wall will be very smooth, and the inner wall has obvious separation lines. If possible, you can grind away the sample in an inconspicuous place to see the color. The color of zinc alloy is white, while copper alloy is yellow.
②Avoid buying low-cost faucets
The unqualified rate of faucets below 100 元高 85.7%, and many items that have a greater impact on consumers’ health, such as the precipitation of materials and metal pollutants, are not recommended.
③Look at the surface
Visually check whether the plating surface of the faucet is evenly glossy, and pay attention to whether there are any defects such as peeling, 破裂, burning, bottoming, 脱皮, dark spots and obvious pitting. The sprayed surface structure should be fine, smooth and uniform, without defects such as sagging and bottoming. There is no burr or grit to the hand.
④Look at the thread
The pipe thread of the faucet is connected with the connecting hose or pipe. 购买时, visually check the thread surface for defects such as dents and broken teeth. Pay special attention to the effective length of the pipe thread.
⑤看感觉
Try turning the handle up, 向下, 左边, 正确. If it feels light and does not feel blocking, the valve core is better. The main parts of a good quality faucet are made of brass. 注意区分使用合金材料和工程塑料的产品, 其质量和服务寿命相对较差.
⑥ Water saving
The faucet with a bubbler saves water better. Feel the water flow with your hand when purchasing. 软水流量和丰富的泡沫 (水流气泡含量) indicate that the bubbler is of better quality.