Home improvement water pipe purchase common sense

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When it comes to home decoration, water pipes are one of the most essential components. Choosing the right type during the purchasing process is crucial—because if a leak occurs, it can cause serious problems later on. Let’s take a closer look at how to choose and install water pipes properly.

1. In residential plumbing, common types of water pipes include PPR (polypropylene random), steel-plastic, and copper pipes. Steel-plastic pipes tend to be more expensive, while PPR pipes are slightly pricier than steel-plastic ones. Copper pipes are the most costly, often costing about four times as much as PPR pipes.

2. When installing pipes during home renovation, it's best to avoid laying them along the floor. Instead, opt for ceiling or wall installation. Although this might slightly increase material costs, it makes future maintenance easier and more accessible.

3. The wall thickness of hot and cold water pipes differs. Cold water pipes should never be used for hot water. A simple way to tell the difference is that hot water pipes usually have a red marking line on them.

4. PPR pipes typically come in standard lengths of four meters each. When purchasing, make sure to clarify whether the price is per pipe or per meter. After delivery, always check that the length matches what you ordered.

5. When selecting water pipes for your home, pay attention to both the diameter and wall thickness. For general use, a 6-point pipe is recommended, but 4-point pipes may also be suitable depending on your needs. If high water flow is required, a 6-point pipe is advisable.

6. When buying pipes, check if the inner diameter is consistent throughout. An uneven inner diameter can lead to issues when connecting different sections, making the installation less efficient and potentially causing leaks.

7. According to the "Construction and Decoration Engineering Quality Standard" set by the Building Decoration Industry Association, newly installed water supply pipelines must undergo pressure testing. For metal and composite pipes, the test pressure should be 0.6MPa, held for 10 minutes, with a pressure drop not exceeding 0.02MPa and no leakage. For plastic pipes, the test pressure should be 0.8MPa, held for 20 minutes, with a pressure drop no more than 0.05MPa and no leakage.

Laboratory Centrifuge

A laboratory centrifuge is a piece of equipment used to separate components of a mixture based on their density and size. It works by spinning samples at high speeds, which creates a centrifugal force that causes the heavier components to move to the bottom of the tube or container. The lighter components remain at the top or in the supernatant.

Laboratory centrifuges are used in various fields such as biology, chemistry, and medicine. They can be used for DNA extraction, protein purification, cell separation, and blood analysis. They are essential tools in research and diagnostic laboratories.

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