What is PVC-U pipe?

PVC-U pipe is made of sanitary polyvinyl chloride (PVC) resin as the main raw material, adding appropriate amount of stabilizer, lubricant, filler, color enhancer, etc., extruded by plastic extruder and injection molded by injection molding machine, through Cooling, solidification, shaping, inspection, packaging and other processes to complete the production of pipes and fittings.

PVC-U water supply pipes are becoming more and more popular in the Philippine market, not only because of the low price list of PVC-U water supply pipes, but also because of their good performance. Now the PVC-U water supply pipes circulating in the Philippine market mainly meet the Chinese standards, which are common to international standards.

Let's take a look at the production standards of PVC-U water supply pipes.

The production standards of PVC-U water supply pipes include British standard, American standard, Japanese standard, IS0 international standard, national standard (GB) and so on. We recommend that you use Chinese standard products, which are in line with the national conditions of the Philippines, have better quality assurance, and are easy to use with other pipes (traditional pipes and other grades of PVC-U pipes). Of course, you can ask which standard to produce according to your requirements, and we can also meet your requirements in the Philippine market.

The standards for PVC-U water supply pipes are specifically stipulated. It mainly has three requirements, pressure standards, specification standards, and pipe interface standards.

1. The pressure regulation of the pipeline.

The pressure shown in the PVC-U water supply pipe is expressed as the nominal pressure, expressed in Mpa, 1Mpa≈10kgf/cm2 is the working pressure of the conveying medium under the condition of 20°C. However, as the temperature of the medium increases (the medium with >50°C must not be transported), the working pressure decreases. Objectively, the safety factor of sufficient pressure must be considered in the selection of the water supply pipeline.
The nominal pressure of the water supply pipe is stipulated as 5 types: 0.6Mpa, 0.8Mpa, 1.0Mpa, 1.25Mpa, 1.6Mpa, etc.
The nominal pressure of pipes of the same specification is generally divided by the wall thickness of the pipe.
The minimum diameter of pipes in each pressure zone is specified as follows: the minimum diameter of 0.6Mpa pipes is 63mm, the minimum diameter of 0.8Mpa pipes is 50mm, the minimum diameter of 1.0Mpa pipes is 40mm, and the minimum diameter of 1.25Mpa pipes is 32mm , The minimum diameter of 1.6Mpa pipe is 20mm and 25mm.
The nominal pressure of the water supply pipe is generally 1.6Mpa, and it is matched with pipes of various pressures.

In fact, these pressures are generally common pressure standards. If you want to import PVC-U water supply pipes to the Philippines, it will fully meet the requirements.

2. The specifications of the pipeline.

The specifications and sizes of PVC-U water supply pipes stipulated in the standard are the nominal outer diameter, and the pipe fittings are the nominal inner diameter, which is represented by "φ".
The specifications and sizes of PVC-U water supply pipes are: φ20, φ25, φ32, φ40, φ50, φ63, φ75, φ90, φl10, φ125, φ140, φ160, φ180, φ200, φ225, etc., which are basically not produced by domestic enterprises φ125, φ140, φ180, φ225 and other specifications of pipes, so try to avoid choosing these types of pipes in engineering design and adoption. It is recommended to avoid the design of pipes above φ800 in the design of PVC-U pipes, and it is better to design pipes below φ630.
National standard PVC-U pipes can generally be matched with traditional international standard pipes. The corresponding relationship between national standard PVC-U pipes and traditional international standard pipe nominal diameters: φ20-DNl5, φ25-DN20, φ32-DN25 , φ40-32, φ50-DN40, φ63-DN50, φ75-DN65, φ90-DN80, φ11O-DNl00, φ160-DNl50, etc.

Here you need to look at your engineering designer in the Philippines, which method he is used to, representing the pipe specification and size, as long as the appropriate caliber PVC-U pipe is deployed for installation.

3. The interface method of the pipeline is stipulated.

(1) There are generally three ways for the interface of PVC-U water supply pipes: rubber ring interface, glue adhesive interface, and flange connection.

A. The rubber ring interface method is to expand one end of the pipe into a socket with a groove through an automatic belling machine, put a flexible rubber sealing ring, and insert the unflared end of a PVC-U water supply pipe into the seal Complete the connection in the surrounding socket.
B. The way of glue bonding interface is to expand one end of the PVC-U water supply pipe into a smooth socket, and apply special glue on the surface of one end of the other unflared pipe and the inner surface of the expanded socket, and then carry on Plug in to complete the connection.
C. The flange connection method is that when the pipe is connected to the traditional pipe, butterfly valve, gate valve, flow meter, etc., the connected end of the pipe is connected to the PVC-U flange and then tightened with screws.

(2) There are generally two ways to connect PVC-U water supply pipe fittings: glued interface and flexible interface.

A. The way of glue-bonded interface is that the socket of the pipe fitting is injection molded into a smooth socket, and the special glue is applied together with the pipe to complete the connection through the socket.
B. The flexible interface method is that the pipe fittings are molded into a socket with a groove, and a compression screw cap is added, and a compression rubber sealing ring is placed. After the corresponding pipe is inserted into the socket, the compression screw cap is tightened to complete the connection.

Then, after you understand the standards of these interface methods, find suppliers in China or the Philippines, and purchase directly. Of course, you must inform the corresponding standards.

Main features of PVC-U water supply pipe

Light weight, convenient handling and loading and unloading ─ ─ low density, easy handling, loading and unloading, and construction.
Excellent corrosion resistance ───── With excellent acid resistance, alkali resistance and corrosion resistance, it is very suitable for the chemical industry.
Small fluid resistance ────── The inner wall of the pipe is smooth, its roughness coefficient is only 0.009, and the fluid resistance is small, which effectively improves the hydraulic conditions of the pipe network and reduces the operating cost of the system.
High mechanical strength ────── The pipe has good pressure resistance, impact resistance and tensile strength performance.
Simple construction ──────── Pipe connection construction is quick and easy, and the construction project cost is low.
Low cost ─────── The price is low, and the transportation and construction are convenient, and the service life is long, so the overall cost is low.
Does not affect water quality ────── It has been proved by the dissolution test that it does not affect water quality, and is suitable for large-scale promotion and application.

Formally because of the above characteristics of PVC-U water supply pipes, PVC-U water supply pipes are more and more used in water supply projects in the Philippines. Compared with water supply pipes made of other materials, PVC-U pipes can help you save costs and reduce after-sales and maintenance costs.

PVC-U water supply pipe product application range

PVC-U water supply pipes are used in indoor water supply and reclaimed water systems of civil buildings and industrial buildings.
PVC-U water supply pipes are used in buried water supply systems in residential quarters and factories.
PVC-U water supply pipes are used in urban water supply pipeline systems.
PVC-U water supply pipes are used in water treatment piping systems of water treatment plants.
PVC-U water supply pipes are used in mariculture.
PVC-U water supply pipes are used in garden irrigation, well sinking and other projects and other industrial pipes.

If you are engaged in the above-mentioned related projects or businesses in the Philippines, even if you are an agent or distributor of PVC-U water supply pipes, you can inform our professionals of your specific needs and adapt to the appropriate standard PVC for you. -U water supply pipe. Contact us.