When decorating and dismantling, the water and electricity master often asks: "Do you want the whole PVC drain pipe or cut it? How many meters is the whole pipe?" In fact, whether it is a buried pipe for home improvement or a main drainage pipe for engineering laying, "how long is the PVC drain pipe" is a high-frequency problem. Let's dismantle this problem today - from the most common standard length to the customized service for special needs, and make it clear at one time.

First of all, it is necessary to clarify: the regular standard length of PVC drain pipes is mainly 4 meters and 6 meters. These two numbers are not random, behind the double practical consideration of "transportation + installation": the length of the regular compartment of the truck is about 4.2 meters or 6.8 meters, the 4-meter pipe can be just stuffed into the compartment, and the 6-meter pipe will not exceed too much (to avoid scratches during transportation); and when installing, the 4-meter pipe is the most flexible in home decoration - most of the pipes in the kitchen and bathroom do not need a long whole pipe, and it is not easy to turn if they are too long; the 6-meter pipe is suitable for the main drainage of the community, the drainage of the factory building and other engineering scenarios, which can reduce the number of splicing (every less joint, there is less risk of water leakage).

Let's talk about the difference in length of different brands. In fact, there is no "mandatory uniform length" regulation in the industry, but the standard length of most brands will be adjusted around the "target customer": the brand that focuses on home improvement, usually 4 meters pipe (because there are few waste pipes after home improvement cutting, the master can operate it easily); the brand that takes into account engineering will provide 4 meters and 6 meters options at the same time (engineering customers are more concerned about "reducing splicing", and 6 meters pipe is more cost-effective). But no matter which brand you choose, as long as it is a compliance product, the length will be "full feet" - for example, the actual length of the pipe marked with 4 meters will not be less than 3.95 meters, which is the default "bottom line" of the industry.

When do you need to customize the length? There are mainly three special scenarios: one is "the floor height exceeds the standard", such as the floor height of the duplex building or loft exceeds 4 meters, if the standard 4-meter pipe is used, the top will leave a gap, and a 4.5-meter or even 5-meter pipe needs to be customized; the second is "special-shaped space", such as when the old house is renovated, the original pipe should bypass the load-bearing wall and go "Z-shaped" or "U-shaped", and the standard pipe length is not enough to fit; the third is "large-scale engineering needs", such as the drainage main pipe of the industrial plant needs 8 meters long pipes to reduce the connection points in the middle.

What should be paid attention to when customizing? First remember the four "can not save": first, compliance can not save - no matter how long, the pipe diameter (such as De110, De160) and wall thickness (at least 2.8mm for home decoration, at least 3.2mm for engineering) must meet the GB/T 5836.1-2006 national standards, thin pipe wall "custom pipe" will bury the hidden danger of hydraulic explosion; second, the upper limit of length should be asked - the longest length that general manufacturers can do is 8-10 meters, and then long, transportation requires special vehicles, the cost will double; third, the cycle should be planned in advance - custom pipe needs to adjust the production line, 3-7 days more than the standard product, it is best to confirm with the manufacturer 10 days before the start of construction; fourth, the demand should be detailed - don't just say "5 meters pipe", you have to make it clear "Use for bathroom drainage" or "main pipeline in the community" to avoid the pipes made by the manufacturer according to "general standards" not matching your scene.

Final summary: If it is an ordinary home improvement or a conventional project, choose a standard pipe of 4 meters or 6 meters, which is the most cost-effective; if you encounter special floor heights, special-shaped spaces or large-scale engineering needs, find a regular manufacturer to customize, but be sure to keep an eye on "compliance" and "detailed communication". After all, the drain pipe is a hidden project, and the length is selected correctly, so that the risk of water leakage and blockage can be minimized later.