Product Description

Material: PE100,                                   
Characters of pipe:

1, Light weight, long service life
The weight of HDPE pipe is 1 eighth that of steel pipe, while its service life is 8-10 times more than steel pipe.

2, Good anti-corrosion, good wear-resistance, anti-aging.
HDPE pipe has great corrosion resistance. It has good impact and pressure resistance performance, so it is widely used in piping project under different conditions.

3, High-toughness
It is not easy to break when suffer with the impact of the internal and external force, and it can be bent under water,and excellent anti-wave.
The concave-convex is within 30°of area, can be connected directly on land.

4, Low noise in media transportation.
Smooth surface, low resistance of fluids, low noise.

5, Easy installation
They are convenient to install and need no anti-corrosion treatment or welding work, which can reduce installation difficulty and save lots of working expenses under complex or special environment.

1. Dredging Industry: Floating dredge pipe for river channel/sea shore/lake/pond, sand sunction/slurry dredge, 
2. To transport na tural gas & coal gas,
3. Food & chemical industry,
4. To transport ore & mud,
5. To replace cement pipe, cast iron pipe & steel pipe,
6. Landscaping pipeline,
7. City and town water supply







1.  Q: Are you a manufacturer?
   A: Yes. we are manufacture and trading of HDPE & PPR firefighting pipe,pluming pipe and fittings.
2. Q: What is the shipping port?
    A: ZheJiang or HangZhou port.
3. Q: Can I get free samples?
    A: We can offer you free sample, but we don’t bear courier fee.
4. Q: What is the delivery time?
    A: It depends on the product quantity. If the stock is enough, products will be sent out as soon as possible. We usually have stocks.
5.  Q: Can I order in small quantity first?
     A: Yes, trial order is welcome.
6. Q:Do you manufacture OEM products?
    A: Yes, we can maufacture OEM products. Please contact salesman to discuss product details and other issues.


Shipping Cost:

Estimated freight per unit.

To be negotiated
Warranty: 1 Year
Material: PE100
Pressure: SDR11
US$ 0.99/Piece
1 Piece(Min.Order)


Order Sample



Customized Request


Programming With Couplings

A coupling is a mechanical device that connects two shafts together and transmits power. Its purpose is to join rotating equipment and allows some degree of end-movement or misalignment. There are many different types of couplings. It’s important to choose the right one for your application.

Mechanical connection between two shafts

There are many ways to achieve mechanical connection between two shafts, including the use of a coupling. One common type is the beam coupling, which is also known as a helical coupling. It is used for transmission of torque between two shafts. This type of connection accommodates axial, parallel and angular misalignments.
The hubs and shafts of a worm gear are connected together by a coupling. This mechanical connection allows one shaft to turn another without causing a mechanical failure. This type of coupling is made from sliding or rubbing parts to transfer torque. However, the coupling is not designed to withstand jerks, so it isn’t suitable for high-speed applications.
The use of a coupling is common in machinery and equipment. It helps transmit power from one drive shaft to the other, while adding mechanical flexibility. It is also useful for reducing the impact and vibration caused by misalignment. It also protects the drive shaft components from wear and tear.
A double-hook coupling can be used to provide a uniform angular velocity at the driven shaft. Another example is a double-jointed coupling. A double-jointed coupling can be used to connect shafts that are not directly intersecting. The double-jointed yoke can be used for the same purpose.
A shaft coupling is a device that maintains a strong mechanical connection between two shafts. It transfers motion from one shaft to another, at all loads and misalignments. Unlike a conventional linkage, a shaft coupling isn’t designed to allow relative motion between the two shafts. Couplings often serve several purposes in a machine, but their primary use is torque and power transmission.

Functions that control the flow of another function

One of the simplest programming constructs is a function that controls the flow of another function. A function can take an argument and return a different value, but it must be ready to return before it can pass that value to another function. To do this, you can use the goto statement and the if statement. Another way to control flow is to use a conditional statement.

Criteria for selecting a coupling

There are several important factors to consider when choosing the right coupling. One of the most important factors is coupling stiffness, which depends on the material used and the shape. The stiffness of a coupling determines its ability to resist elastic deformation. A stiff coupling is desirable for certain types of applications, but it’s undesirable for others. Stiffness can reduce the performance of a system if there’s too much inertia. To avoid this, ensure that the coupling you choose is within the recommended limits.
The size of a coupling is also important. Different coupling types can accommodate different shaft sizes and shapes. Some couplings have special features, such as braking and shear pin protection. When choosing a coupling, you should also consider the type of driven equipment. If you need to connect a high-torque motor, for example, you’ll want to choose a gear coupling. Likewise, a high-speed machine may require a disc coupling.
Another factor to consider when selecting a coupling is the torque rating. Despite its importance, it’s often underestimated. The torque rating is defined as the torque of the coupling divided by its OD. In some cases, torque may fluctuate during a cycle, requiring a coupling with a higher torque rating.
Torsionally flexible couplings are also important to consider. Their design should be able to withstand the torque required during operation, as well as the required speed. The coupling should also have a high degree of torsional stiffness, as well as damping. Furthermore, a damping coupling can reduce the energy wasted through vibration.
The sizing of a coupling is also determined by the torque. Many engineers use torque to select the correct coupling size, but they also take into consideration torsional flexibility and torsional stiffness. For example, a shaft may be able to handle large torque without damaging the coupling, while a disk may be unable to handle large amounts of torque.
Besides torque, another important consideration in coupling selection is the cost. While a coupling may be cheaper, it may be less reliable or easier to maintain. Couplings that are difficult to service may not last as long. They may also require frequent maintenance. If that’s the case, consider purchasing a coupling with a low service factor.
There are many different types of couplings. Some require additional lubrication throughout their lifetime, while others are 100% lubrication-free. An example of a 100% lubrication-free coupling is the RBI flexible coupling from CZPT. This type of coupling can significantly reduce your total cost of ownership.
In addition to the above-mentioned benefits, elastomeric couplings are low-cost and need little maintenance. While they are often cheaper than metallic couplings, they also have excellent shock absorption and vibration dampening properties. However, they are susceptible to high temperatures. Also, they are difficult to balance as an assembly, and have limited overload torque capacity.
China Good quality HDPE Hot Melt Pipe Fittings DN140*110mm Buttfusion Reducer Coupling   define couplingChina Good quality HDPE Hot Melt Pipe Fittings DN140*110mm Buttfusion Reducer Coupling   define coupling
editor by CX 2023-06-05