Item Description


PP-R pipe is a new technology of atmosphere-Friendly building substance designed in nineties. Apart from plastic pipe merits, this sort of as lightness, corrosion resistance, anti deposition and lengthy service existence, PP-R pipe also have some new advantages, like hygienism, heat-resistant, content recycled. In the in the meantime, lower coefficient of heat conductivity can aid for energy conservation. The utilization of CZPT sol binding technique can make the method of installation very convenient. Certified raw content, from Korea, was utilized for CZPT PP-R piping networks. The functionality regular of PP-R goods can match DIN8077 & DIN8078 or GB/T18742.



Functions OF Item

Lengthy Support Existence:

A PN20 water pipe, transporting water at 30C can previous for much more than 50 many years, below typical circumstances with an functioning stress of 21.8 bars. Hygienism and Non-toxic:

The substance is a new variety environmental developing content, which can be employed in pure water piping technique.


Below 9.7 bars force and 95°C very hot h2o, the PN25 hot h2o pipe can keep on to function 1 yr.


For most of the ions in the h2o and chemical substances in the building, there is not chemical reaction, no rust and no corrosion with PP-R piping program.

Thermal Insulation and Energy Conservation:

The thermal conductivity coefficient is only 1/two hundred of the steel pipe.

Mild Excess weight and Higher Depth:

The proportion is only 1/8 of the metal pipe. The strain resistance test depth reaches 5MPa (50kg/cm) or earlier mentioned.

Desirable Appearance:

Smooth internal and external wall, minimal circulation-resistant, gentle shade and beautiful appearance.

, Straightforward and Dependable Set up: It adopts CZPT sol binding conjunction, no threaded, and it will only take many seconds for connection. Substantial. high quality copper inlay items are adopted, when it connects with metallic pipe or water consumption machines. It is protected and reputable.


1. We are a manufacturer of plastic tubes and fittings. We acknowledge OEM organization.

2. We source cease valve,pipe stop cap,equivalent/reduceing tee,chilly sizzling h2o ball valve,union ball valve,threaded elbow(plastic or with metallic) and so on.

three. We also supply the connectors Accordingly.

4. We can offer you really competitive costs for some pipes.

5. We welcome you to pay a visit to our internet and our manufacturing facility. Your browsing will be highly appreciated.

six. It is my satisfaction to aid you.

7.If you need much more personalized providers and delivers,Please Speak to Us.


Much more Solution


OUR Gain

1.large top quality&industrial major price tag

two.quick order processing & on-time supply

3.incredibly extended use lifestyle for at least 5 years

four.modern & customer-oriented experience in exportation

6.greatest good quality & best service with competitive value

7.effortless and rapidly set up, creating value minimized

8.healthier and non-poisonous, cost-free of stain,recycable, enviromentally welcoming

9.Modern technical products in combination with proficient manual work.

ten.Light-weight, convenient to transport and deal with, great for labor-saving.


OUR Company


one. Are you a manufacture or buying and selling firm?
We are a well-acknowledged answer provider for plastic piping program in the planet with 26 several years specialist experience. Welcome to go to and examine us, you would find the variation with others.
two. Do you supply OEM services?
Yes. We have our famous brand name title. But we can offer you OEM provider also, with very same top quality. We can overview and take customer design and style, or design and style dependent on consumer specifications, by our professional R&D team.
three.Why Pick Us?
Trust in our knowledge.
We supply a lot of diverse requirements professional products for far more than sixty nations and regions in the globe.
Believe in in our authority.
We experienced a lot of professional inspections and certificates. We experienced handed inspections of CE, SGS, and get the certificates of ISO 9001, ISO 14001, OHSAS 18001, and WRAS, and so on.
Believe in in our answers.
We have expert R&D group, QA&QC team, advertising and marketing group. We have numerous patents and awards, can offer maximum top quality OEM goods, and aid you and do with you to settle any sort of logistical troubles.
Trust in our manufacturing capability.
We have far more than 30 pipe extruding machines, and two hundred injection molding equipment. And individuals figures even now boost each 12 months.
Trust in our economic management capacity.
We receive the “ZHangZhoug Top Export Manufacturer” by authorities. We have the ability to make every your US cent effective. Every cent, which you spend us, would be value.
four.How to Get a Sample?
Make sure you utilize sample.
We can use free of charge sample for inspection, after the charges confirmed.
Sample is free.
We would offer you sample for free, and freight is gathered, if you want a sample to affirm. You also can pay out freight to us in advance, and allow us prepaid freight, if you thought the prepaid freight is reduce than collected freight.
Freight is cost-free.
We will undertake the freight, and spend the money into your deposit, if you give the buy to us lastly.


 Material  PPR
 Specification  20mm,25mm,32mm,40mm,50mm,63mm,75mm,90mm,110mm
 Color  green, white,blue
 Packing  carton
 Carton Size  40x26x32cm³
 Delivery Medium   Abt 35 days after despoit
 Application   Delivery Water
 Sample  Offer free samples
 Material  PPR
 Specification  20mm,25mm,32mm,40mm,50mm,63mm,75mm,90mm,110mm
 Color  green, white,blue
 Packing  carton
 Carton Size  40x26x32cm³
 Delivery Medium   Abt 35 days after despoit
 Application   Delivery Water
 Sample  Offer free samples

Screw Sizes and Their Uses

Screws have different sizes and features. This article will discuss screw sizes and their uses. There are two main types: right-handed and left-handed screw shafts. Each screw features a point that drills into the object. Flat tipped screws, on the other hand, need a pre-drilled hole. These screw sizes are determined by the major and minor diameters. To determine which size of screw you need, measure the diameter of the hole and the screw bolt’s thread depth.

The major diameter of a screw shaft

The major diameter of a screw shaft is the distance from the outer edge of the thread on one side to the tip of the other. The minor diameter is the inner smooth part of the screw shaft. The major diameter of a screw is typically between two and sixteen inches. A screw with a pointy tip has a smaller major diameter than one without. In addition, a screw with a larger major diameter will have a wider head and drive.
The thread of a screw is usually characterized by its pitch and angle of engagement. The pitch is the angle formed by the helix of a thread, while the crest forms the surface of the thread corresponding to the major diameter of the screw. The pitch angle is the angle between the gear axis and the pitch surface. Screws without self-locking threads have multiple starts, or helical threads.
The pitch is a crucial component of a screw’s threading system. Pitch is the distance from a given thread point to the corresponding point of the next thread on the same shaft. The pitch line is one element of pitch diameter. The pitch line, or lead, is a crucial dimension for the thread of a screw, as it controls the amount of thread that will advance during a single turn.

The pitch diameter of a screw shaft

When choosing the appropriate screw, it is important to know its pitch diameter and pitch line. The pitch line designates the distance between adjacent thread sides. The pitch diameter is also known as the mean area of the screw shaft. Both of these dimensions are important when choosing the correct screw. A screw with a pitch of 1/8 will have a mechanical advantage of 6.3. For more information, consult an application engineer at Roton.
The pitch diameter of a screw shaft is measured as the distance between the crest and the root of the thread. Threads that are too long or too short will not fit together in an assembly. To measure pitch, use a measuring tool with a metric scale. If the pitch is too small, it will cause the screw to loosen or get stuck. Increasing the pitch will prevent this problem. As a result, screw diameter is critical.
The pitch diameter of a screw shaft is measured from the crest of one thread to the corresponding point on the next thread. Measurement is made from one thread to another, which is then measured using the pitch. Alternatively, the pitch diameter can be approximated by averaging the major and minor diameters. In most cases, the pitch diameter of a screw shaft is equal to the difference between the two.

The thread depth of a screw shaft

Often referred to as the major diameter, the thread depth is the outermost diameter of the screw. To measure the thread depth of a screw, use a steel rule, micrometer, or caliper. In general, the first number in the thread designation indicates the major diameter of the thread. If a section of the screw is worn, the thread depth will be smaller, and vice versa. Therefore, it is good practice to measure the section of the screw that receives the least amount of use.
In screw manufacturing, the thread depth is measured from the crest of the screw to the root. The pitch diameter is halfway between the major and minor diameters. The lead diameter represents the amount of linear distance traveled in one revolution. As the lead increases, the load capacity decreases. This measurement is primarily used in the construction of screws. However, it should not be used for precision machines. The thread depth of a screw shaft is essential for achieving accurate screw installation.
To measure the thread depth of a screw shaft, the manufacturer must first determine how much material the thread is exposed to. If the thread is exposed to side loads, it can cause the nut to wedge. Because the nut will be side loaded, its thread flanks will contact the nut. The less clearance between the nut and the screw, the lower the clearance between the nut and the screw. However, if the thread is centralized, there is no risk of the nut wedgeing.

The lead of a screw shaft

Pitch and lead are two measurements of a screw’s linear distance per turn. They’re often used interchangeably, but their definitions are not the same. The difference between them lies in the axial distance between adjacent threads. For single-start screws, the pitch is equal to the lead, while the lead of a multi-start screw is greater than the pitch. This difference is often referred to as backlash.
There are two ways to calculate the pitch and lead of a screw. For single-start screws, the lead and pitch are equal. Multiple-start screws, on the other hand, have multiple starts. The pitch of a multiple-start screw is the same as its lead, but with two or more threads running the length of the screw shaft. A square-thread screw is a better choice in applications requiring high load-bearing capacity and minimal friction losses.
The PV curve defines the safe operating limits of lead screw assemblies. It describes the inverse relationship between contact surface pressure and sliding velocity. As the load increases, the lead screw assembly must slow down in order to prevent irreversible damage from frictional heat. Furthermore, a lead screw assembly with a polymer nut must reduce rpm as the load increases. The more speed, the lower the load capacity. But, the PV factor must be below the maximum allowed value of the material used to make the screw shaft.

The thread angle of a screw shaft

The angle between the axes of a thread and the helix of a thread is called the thread angle. A unified thread has a 60-degree angle in all directions. Screws can have either a tapped hole or a captive screw. The screw pitch is measured in millimeters (mm) and is usually equal to the screw major diameter. In most cases, the thread angle will be equal to 60-degrees.
Screws with different angles have various degrees of thread. Originally, this was a problem because of the inconsistency in the threading. However, Sellers’s thread was easier to manufacture and was soon adopted as a standard throughout the United States. The United States government began to adopt this thread standard in the mid-1800s, and several influential corporations in the railroad industry endorsed it. The resulting standard is called the United States Standard thread, and it became part of the ASA’s Vol. 1 publication.
There are two types of screw threads: coarse and fine. The latter is easier to tighten and achieves tension at lower torques. On the other hand, the coarse thread is deeper than the fine one, making it easier to apply torque to the screw. The thread angle of a screw shaft will vary from bolt to bolt, but they will both fit in the same screw. This makes it easier to select the correct screw.

The tapped hole (or nut) into which the screw fits

A screw can be re-threaded without having to replace it altogether. The process is different than that of a standard bolt, because it requires threading and tapping. The size of a screw is typically specified by its major and minor diameters, which is the inside distance between threads. The thread pitch, which is the distance between each thread, is also specified. Thread pitch is often expressed in threads per inch.
Screws and bolts have different thread pitches. A coarse thread has fewer threads per inch and a longer distance between threads. It is therefore larger in diameter and longer than the material it is screwed into. A coarse thread is often designated with an “A” or “B” letter. The latter is generally used in smaller-scale metalworking applications. The class of threading is called a “threaded hole” and is designated by a letter.
A tapped hole is often a complication. There is a wide range of variations between the sizes of threaded holes and nut threads, so the tapped hole is a critical dimension in many applications. However, even if you choose a threaded screw that meets the requisite tolerance, there may be a mismatch in the thread pitch. This can prevent the screw from freely rotating.