DN8 is a 2 cent connector, DN15 is a 4 cent connector, DN20 is a 6 cent connector, DN25 is a 1-inch connector, DN32 is a 1.2-inch connector, DN40 is a 1.5-inch connector, DN50 is a 2-inch connector, and most of the taps in the house are DN15 4 cent connectors.
The faucet made of ceramic, compared with other materials, has the advantage of not rusting, oxidation, not easy to wear, and so on, the appearance of generous, sets off the whole space of high-end atmosphere.
The interior of the copper is relatively rough, can be observed inside the faucet, can grind deep in inconspicuous places to see the brass color is no problem, at present, copper is the most suitable material to do faucets.
Zinc alloy faucets are harmful to the human body, the casing is easily corroded and fractured after impact with the water, and the surface is white after grinding open. At present, it is generally made by sand tumbling process, machine die-casting, and smooth and flat inside.
Iron faucets are prone to rust and are difficult to replace and disassemble, just like magnets suck. Generally are some small faucets, the surface is more difficult to handle, the appearance is rougher; large hot and cold faucets using less iron, the processing is more difficult.
Stainless steel faucets do not contain lead, acid, and alkali resistance, not easy to corrode, hardness, and toughness than copper faucets more than two times higher, but the hardness, toughness, and cutting process are more difficult than copper faucets, and high cost.
The above faucet material, the cast iron faucet has been gradually eliminated, the all-plastic faucet is mostly used in special areas; now, the most common household faucet materials are full copper, alloy, ceramic, stainless steel, etc. These commonly used faucet materials, alloy faucets are harmful to human health; ceramic and stainless steel faucets, although they have their own advantages, the price is higher, the processing process requires high, and the number of product categories is relatively small, has not been fully popular; copper faucets with excellent price/performance ratio, occupy the dominant position in the faucet material market, is a domestic faucet in a unique branch.