I. Scale
Generally speaking, the length and width of the opening = the length and width of the sink minus 3cm.
For example, in a 75×40 sink, the opening should be 72×37.
Second, how to choose
1.？ Material of sink: features: corrosion resistance, oxidation resistance, long service life, often used and often new, and the service life can reach 30 years. Some manufacturers make sinks. In order to have an advantage in price competition, they use stainless steel with 202, 402 and less nickel? Iron, although this material will not have quality problems in a short time, the surface of the sink will change color and be easily corroded after long-term use. High fouling rate is not easy to be clean and hygienic, and the air is easy to breed bacteria.
2. Welding technology: There are three types of water tank welding, namely bottom welding, butt welding and integral molding.
3. Depth of sink: The basin depth of high-grade sink is about 18 to 24CM, and the general sink is below 18CM.
4. Surface treatment: generally divided into three types: sandblasting, wire drawing and pearlescent silver surface.
5. Bottom spraying: generally divided into three ways: dry spraying, oil spraying and water spraying.
6. Automatic workbench control: generally divided into three types: pull type, press type and rotary type.
7. Double flanging: There are generally three types: large round edge, right-angled flat edge and small R-angle flanging.
8. Sewer fittings: silver ion PP large-diameter drain pipe, and the national standard sewer pipe should reach 50 mm
9. Patent trash can: generally divided into four types: on stage, under stage, underground and sink.
Third, determine the strengths and weaknesses.
1. When purchasing a stainless steel sink, first look at the thickness of stainless steel. The appropriate thickness is 0.8 mm-1.0 mm. Too thin will affect the service life and strength of the sink, and too thick will easily damage tableware.
2. Secondly, look at the surface treatment process. High gloss has high finish, but it is easy to scratch; Abrasive wear-resistant, but easy to scale; Matte has both the brightness of high light and the durability of matte, and generally more choices are made.
3. Using stainless steel sink, the surface is easy to be scratched, and it is better to have special treatment such as wire drawing and polishing, which can not only withstand repeated wear and tear, but also be more resistant to dirt and easy to clean.
4. The important reference indexes for choosing ceramic sink are glaze smoothness, brightness and water storage rate of ceramics. Products with high finish are pure in color, not easy to hang dirt and scale, easy to clean and good in self-cleaning. The lower the water absorption, the better the product.
6. The eyes of the artificial stone sink look pure and not turbid, and the surface is smooth. The surface was scraped with nails without obvious scratches. The most important thing is to see whether the quality inspection certificate, quality assurance card and other documents are complete.
The above is the introduction of the opening size of the sink. There are many kinds of sinks in our life. You know, the common ones are stainless steel sinks, which are mainly used in kitchens. They are stainless steel appliances. The sink can be divided into ceramic sink and steel plate franc sink. Bathrooms generally use ceramic sinks, which are durable and wear-resistant, and some sinks use natural granite. Pay attention to the classification when choosing a sink, because different types of sinks have different calculation methods when opening holes.
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