Proizvođač slavina VIGA 
Nedavno, the Nanjing Municipal Bureau of Quality Supervision released the results of the 2017 residents’ home improvement products quality spot check, koje uključuju slavine, sudoperi od nehrđajućeg čelika, 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%.
Nekvalificirana stopa slavina pod 20$ is as high as 85.7%
Prethodno, 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. Nakon inspekcije, 27 batches were qualified and 13 batches were unqualified, sa stopom prolaza 67.5%.
Nanjing Quality Supervision Bureau classified the test results according to the product source and price range, and the results were eye-catching.
The 40 batches of tap products sampled this time were 20 šarže, 19 serije i 1 batch sampled from physical stores, Platforme za e-trgovinu i proizvodne tvrtke, odnosno. Među njima, 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%.
Iz perspektive cijena proizvoda, prolazna stopa proizvoda 70$ and above is 100% (unqualified rate 0%), and the pass rate of products between 20$ i 70$ je 85.7% (unqualified rate 14.3%). The pass rate of products between 20$ i 40$ je 62.5% (the unqualified rate is 37.5%), i prolaznu brzinu proizvoda od 100 Yuan i ispod je 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 “Slavina za brtvljenje keramičkog lima” and GB 25501-2010 “Limited Value of Faucet Water Efficiency and Water Efficiency Grade”. Among the 13 batches of unqualified products, the unqualified items mainly related to surface corrosion resistance, water efficiency grade, flow uniformity and materials, among which 2 batches of products were detected to exceed the standard of metal pollutant precipitation (dovesti).
U Dodatku, 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 sate, 8 sate, 12 sate, i 24 hours at a low temperature of -10°C. Risk monitoring. Nakon inspekcije, 33 batches of faucets meet the standard requirements, with a compliance rate of 82.5%.
Inspection item analysis
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, a stopa prolaska ovog projekta bila je 97.5%; 3 batches of flow uniformity were unqualified, a stopa prolaska ovog projekta bila je 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 Površina otpora korozije
Among the samples sampled this time, 12 batches of surface corrosion resistance were unqualified, a stopa prolaska ovog projekta bila je 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, ali također uključuje različite aspekte poput materijala, postupak lijevanja, poliranje i prethodna obrada.
③Precipitation of metal pollutants
Among the samples sampled this time, 2 batches of metal contaminants were unqualified, a stopa prolaska ovog projekta bila je 95%. Oborine metalnih zagađivača povezane su s ljudskim zdravljem, posebno nakupljanje olova u ljudskom tijelu, 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 Materijal
Among the samples sampled this time, 7 batches of materials were unqualified, a stopa prolaska ovog projekta bila je 82.5%. Neki proizvodi koriste leguru cinka, a corrosive material whose price is only 1/3 of copper alloy. Ovaj je materijal lako korodirati, koji ne samo da utječu na izgled, but also reduces the strength of the faucet, causing water leakage and cracking after a period of use. U usporedbi s bakrenim legurama, 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 (temperaturni test)
This sampling conducted a temperature test, to jest, freezing the water nozzle at -10°C for 4 sate, 8 sate, 12 sate, i 24 hours to test the sealing performance. Nakon testiranja, među 40 batches of taps sampled this time, ukupno 7 batches of faucets have leaked in a low temperature environment.
Trenutno, there is no corresponding national standard for the freezing temperature value of faucets. U normalnim okolnostima, 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. Na vezi će biti curenje. Kako bi uštedjeli troškove, 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)
Savjet za potrošače
①Avoid buying zinc alloy faucets
Zinc alloy is a corrosive material, so you should avoid this type of product when purchasing a faucet. Može se razlikovati prema unutarnjoj šupljini proizvoda. 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. Ako je moguće, 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 yuan je visok kao 85.7%, and many items that have a greater impact on consumers’ zdravlje, 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, pucketanje, burning, bottoming, piling, 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. Prilikom kupnje, 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 Pogledajte osjećaj
Try turning the handle up, spušteno, lijevo, i tačno. 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. Obratite pažnju na razlikovanje proizvoda koji koriste legiranje i inženjersku plastiku, čija su kvaliteta i radni život relativno loši.
⑥ Water saving
The faucet with a bubbler saves water better. Feel the water flow with your hand when purchasing. Mekani protok vode i bogato pjevanje (Sadržaj mjehurića protoka vode) indicate that the bubbler is of better quality.