When decorating or engineering a drainage system, it is "implicitly important" to choose the right length of the PVC drain pipe - too long is not easy to transport, too short to connect a bunch of joints, which is both material-intensive and easy to leak. Many people ask when they first come into contact: "Is there a fixed length for the PVC drain pipe? How many meters are common? Can it be customized in special circumstances?" Let's make these questions clear today.

first talk about the common standard length. At present, the mainstream specifications of PVC drain pipes on the market are mainly 6 meters and 4 meters. These two lengths are not arbitrarily determined, but take into account the balance of transportation, construction and cost:

-6 meters Specifications: more suitable for large projects or public buildings (such as high-rise residential, shopping malls, hotels main drainage risers). Because the length is long enough, each pipe can cover more vertical or horizontal distance, greatly reducing the number of joints - you know, most of the leakage risk of the drainage system comes from the joints, and one less joint is more reliable. For example, the main riser of a high-rise house from the 10th floor to the 1st floor may only need 2-3 splices with 6 meters of pipe, while 3-4 with 4 meters of pipe, the construction efficiency and reliability are higher. However, 6 meters of pipe transportation should be paid attention to, and it must be fixed with a special truck to avoid bending deformation.

- 4 meters specification: closer to home decoration or small space scenes (such as the branch pipe of a small apartment kitchen, bathroom, or the pipeline adjustment of an old house renovation). The length of 4 meters is more flexible, it can be easily stuffed into the elevator, through narrow corridors, and it is also convenient to adjust the direction in complex pipelines - for example, your bathroom needs to connect the water pipe from the sink to the balcony, and the 4-meter pipe may be just enough "in one step", without cutting and wasting materials. The decorator often says: "The family uses 4 meters of pipe, which is not distressing to cut, and it is easier to install."

Let's talk about customization requirements. Standard lengths can not be used in all situations, for example: the original pipeline layout is strange when the old house is renovated, and the standard pipe is too long to plug in; industrial projects need particularly long overhead pipes; or special scenes need to be cut into 1-meter, 1.5-meter short pipes. When customizing, pay attention to these points:

1. Matching system parameters: Before customization, be sure to confirm the diameter (such as De50, De75, De110) and wall thickness (such as S2.5, S3.2) of the original pipeline, otherwise the customized pipe and the original accessories (elbow, direct, tee) can not be connected, equal to white.

2. Clear use scenarios: tell the manufacturer whether the pipe is buried, overhead or ceiling - buried pipes need thicker walls, overhead can be slightly thinner; humid environment also need to mention anti-corrosion requirements.

3. Planning cycle in advance: Customized pipes are not like standard pipes with inventory, generally take 3-7 days to produce, have to calculate the construction progress, don't wait for the installation to find the manufacturer.

4. Consider the transportation cost: If the customized pipe exceeds 6 meters (such as 8 meters, 10 meters), it may need to be transported by special car, and the cost will be 10% -20% higher than the standard pipe. Ask the manufacturer in advance if it can be delivered.

5. Check the size on site: After receiving the customized pipe, first get it to the construction site to compare, confirm the length and diameter of the pipe before installing, to avoid the embarrassment of finding "50 cm difference" halfway through the installation.

Finally give a few practical tips:

- Before choosing the length, let the master measure the "net distance" of the site (such as the vertical height from the roof to the ground, or the horizontal distance from the sink to the riser), try to use the whole pipe, really cut, the remaining short pipe can be kept as a branch line, do not waste.

- When transporting a 6-meter pipe, it should be fixed on the truck with a rope or strap to avoid the pipe sliding and crashing when braking suddenly.

- Whether it is a standard pipe or a customized pipe, check the surface for cracks, deformation, and burrs before installation - if there is a problem, change it in time. Don't wait until it is installed to find water leakage.

In fact, the length selection of PVC drainage pipes is the core of "adaptation scenarios": 6 meters provincial joints for large projects, 4 meters for small families is more flexible, and it is customized in special circumstances. There is no need to pursue "the longer the better" or "the shorter the more convenient". Combined with your own needs and site conditions, if you choose the right one, the drainage system can be used for decades.