Product Description

All Kinds Hot Water Plastic Pipe Fittings/Male Or Female Screw-thread Coupling

In Cold and hot water transprotation project, the PPR pipes and fitttings adopts advanced CHINAMFG technology ,whoes technical performance and economical indicator are better than other similar pipes,n particular, its excellent health performance, from production to the whole process of recycling waste can achieve high health and environmental protection requirements.

Product Features:

1) High Temperature Resistance: the maximum sustained working temperature is up to 70 ºC ,  the maximum transient temperature is up to 95 ºC

2 )Heat Preservation: low thermal conductivity which is only 1/1500 of brass pipe, and 1/250 of steel pipe

3) Non-toxic: no heavy metal additives, would not be covered with dirt or contaminated by  bacterium 
 
4) Corrosion Resistant: resist chemical matters or electron chemical corrosion

5) Lower Installation Costs: light weight and ease of installation can reduce installation costs by as much as 50% over metal piping system

6) Higher Flow Capacity: smooth interior walls result in lower pressure loss and higher volume   than metal pipes

7) Long Life: more than 50 years under normal conditions

8) Recycled and Environment-friendly

Product Specification:
 

Outer Diameter Dn(mm)	PP-R Water Supply Pipe
	S5	S4	S3.2	S2.5
	Wall Thickness en (mm)
20	2.0	2.3	2.8	3.4
25	2.3	2.8	3.5	4.2
32	3.0	3.6	4.4	5.4
40	3.7	4.5	5.5	6.7
50	4.6	5.6	6.9	8.3
63	5.8	7.1	8.7	10.5
75	6.9	8.4	10.1	12.3
90	8.2	10.1	12.3	15.1
110	10.0	12.3	15.1	18.3

Product Performance:

General situation, and long-term continuous make temperature < 70 ºC, can choose C = 1.25;On important occasions, and long-term continuous working temperature of 70 ºC or higher, and may have a run at a higher temperature for a long time, can choose C = 1.5
 

security coefficient C=1.25
Pipe series	S5	S4	S3.2	S2.5	S2
PN	1.25	1.6	2.0	2.5	3.2
security coefficient C=1.5
Pipe series	S5	S4	S3.2	S2.5	S2
PN	1.0	1.25	1.6	2.0	2.5

ATTENTION:Used for cold water (40 ºC) or less system, choose P.N 1.0 ~ 1.6 MPa pipes, pipe fittings; Used for hot water system use acuity PN2.0 MPa pipes, pipe fittings.

Application area:

1) Pipe for hot and cold water,drinking water system

2) Pipe for heating ,floor and wall warming system, melting snow in north building

3) Pipe for solar heating system ,hot and cold device

4) Pipe for transproting oil and coling liquid

5) Pipe for air contaditioning external connecting

6) Pipe for transporting oxygen in hospital

–Sales Service–
Company Profile:

ZheJiang CHINAMFG ORIGINAL PIPE CO.,LTD was created in 2001 in CHINA.Our company is a leading manufacturer and supplier in the sanitary water and heating plumbing pipe sector in China,providing our customers with high quality ,cost-effective plumbing pipe solutions.
As 1 of the first manufacturers in China that started producing PPR/PEXA/PERT pipes,we have extensive experience in pipe production and are committed to using high quality raw materials and equipment for our products.We use machines imported from the US and Germany .Dow,Borealis,LG and Sk are our long-term material supplier partners.

Packing and Delivery:

Service:

Packaging :roll plastic bag for pipe ,put fittings into nylon bags then out of carton

Shipping:For samples order ,we support transfer by international express,such as FEDEX,DHL,TNT or EMS;
For final order,we do sea shipping ,our factory are near from ZheJiang port and HangZhou port ,we can transfer goods to port within 4 hours .

Delivery : Within 5-30 days after receiving deposit.

Contact Us:
Thanks for your attention on us.If you are interested in any of our products ,please feel free to contact me.

We promise our customers the Best-Quality products with reasonable price.

Sales: Candice Xu

 

FAQ

Q1. What material of pipe are you specialized in?

A: We manufacture PE-Xa,  PPR,  PE-RT, PEX Aluminum composite pipes and fittings.

Q2. Do you produce PVC pipes and fittings?

A:Sorry, dear friend. We are more professional PE and PPR pipe and fittings, which are more suitable for drinking water as they are more hygienic than PVC material. 

Q3. Please tell me your largest outer diameter for pipes.

A: We can produce 8mm– 110mm diameter (PE pipe).

Q4. The price of your products is higher than others.

A: We can’t promise you the best price, but we can promise you the best quality. We import raw material from famous companies such as Borstar, LG Chemical, Chervrom, Hyosung, Lydellbasell, Sinopec.

Q5. For pipe fittings, what do you do mainly?

A: For fittings, coupling (socket), elbows, tee, reducer, union, valve, cap and copper insert fittings are our main products.

Q6: Can you provide us some samples for testing?

A: Of course, my friend. For small amount of samples, we can provide you for free.

Q7: How is our customer service?

A: all our sales representatives can speak fluent English. They will answer all of your questions in 24 hours.

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How Do Bellows Couplings Contribute to Reducing Vibrations and Ensuring Smooth Operation?

Bellows couplings play a crucial role in reducing vibrations and ensuring smooth operation in mechanical power transmission systems. They achieve this through their unique design and material characteristics, which allow them to absorb and dampen vibrations effectively. Here’s how bellows couplings contribute to minimizing vibrations and promoting smooth operation:

• Flexible Bellows Design: Bellows couplings feature a thin-walled, accordion-like structure known as the bellows. This design provides flexibility in multiple directions, allowing the coupling to compensate for minor misalignments and shaft movements. The bellows’ flexing action absorbs shocks and vibrations, preventing them from propagating through the system and reducing the transmission of vibration to connected equipment.
• Vibration Damping: The flexible bellows act as a vibration damper, absorbing and dissipating vibrational energy generated during the operation. When the system experiences dynamic forces or sudden shocks, the bellows expand and contract to absorb these forces, preventing them from resonating throughout the system. This damping action helps maintain the stability of the machinery and prevents excessive wear and tear on components.
• No Mechanical Contact: Unlike some coupling types that rely on friction or mechanical contact, bellows couplings transmit torque through pure flexure without any metal-to-metal contact. This feature eliminates backlash and torsional wind-up, further reducing vibration and ensuring smoother operation. As a result, bellows couplings are well-suited for applications requiring high precision and minimal vibration-induced errors.
• High Torsional Stiffness: While bellows couplings are designed to be flexible, they still possess high torsional stiffness. This stiffness ensures accurate torque transmission without any loss, contributing to the overall efficiency and smoothness of the system’s operation.
• Resonance Avoidance: Bellows couplings are designed to have specific critical speeds and resonant frequencies that prevent resonance from occurring within the coupling itself. Resonance can lead to severe vibration amplification, which can be detrimental to the equipment and surrounding components. The careful design of bellows couplings helps avoid such resonance issues.

By effectively dampening vibrations, absorbing shocks, and providing torsional stiffness, bellows couplings contribute to smoother operation, reduced mechanical wear, and increased overall system reliability. Their ability to handle misalignments and their high torsional stiffness make them a popular choice in precision motion control systems, robotics, and various industrial applications where smooth and accurate performance is essential.

What are the Standard Sizes and Dimensions Available for Bellows Couplings?

Bellows couplings come in a variety of standard sizes and dimensions to accommodate different shaft diameters and application requirements. The sizes and dimensions of bellows couplings can vary depending on the manufacturer and specific series of the coupling. However, some common standard sizes and dimensions are as follows:

• Shaft Diameter: Bellows couplings are available in a range of shaft diameters, typically starting from a few millimeters up to several inches. Common sizes include 6mm, 8mm, 10mm, 12mm, 15mm, 20mm, 25mm, 30mm, and larger.
• Length: The overall length of a bellows coupling can vary based on the design and intended application. Standard lengths are usually specified by the manufacturer and can range from around 20mm to over 100mm, with longer versions available for certain applications.
• Outer Diameter: The outer diameter of a bellows coupling is determined by the coupling’s construction and can vary across different models. It is essential to consider the available space and installation requirements when choosing a bellows coupling based on its outer diameter.
• Maximum Torque Rating: Each bellows coupling has a maximum torque rating that defines the maximum amount of torque it can transmit without failure. The torque rating is typically specified in Newton-meters (Nm) or pound-inches (lb-in) and varies between different sizes and materials.
• Maximum Speed Rating: Bellows couplings are rated for a maximum rotational speed, usually expressed in revolutions per minute (RPM). The speed rating is an important consideration for high-speed applications to avoid exceeding the coupling’s critical speed or causing undue stress on the components.
• Material: Bellows couplings can be made from various materials, including stainless steel, aluminum, and other alloys. The choice of material depends on factors such as the application’s requirements, environmental conditions, and the need for corrosion resistance.

It’s important to note that these dimensions and specifications may vary depending on the manufacturer and the specific series or model of the bellows coupling. When selecting a bellows coupling, it is crucial to consider the mechanical and performance requirements of the application to ensure proper fit and optimal performance.

What is a Bellows Coupling, and How is it Used in Mechanical Power Transmission?

A bellows coupling is a type of flexible coupling used in mechanical power transmission systems to connect two shafts while allowing for angular misalignment, axial motion, and torsional flexibility. It consists of a thin-walled metallic bellows element that resembles an accordion or bellows, which gives the coupling its name. The bellows is typically made of stainless steel, providing it with the necessary flexibility and durability for various applications.

When used in mechanical power transmission, a bellows coupling accommodates misalignments between the connected shafts. These misalignments can be in the form of angular misalignment, where the shafts are not perfectly aligned in a straight line, or axial misalignment, where there is some linear movement along the shaft axis. Additionally, the bellows element provides torsional flexibility, allowing the coupling to transmit torque while compensating for slight shaft misalignments.

The bellows coupling works by absorbing and redistributing the misalignment forces through the flexing of the bellows element. As the shafts rotate, any misalignment causes the bellows to flex, allowing the coupling to maintain a continuous transmission of torque while reducing stress on the connected shafts. This flexibility also helps dampen vibrations and shock loads, protecting the connected components from excessive wear and fatigue.

One of the significant advantages of using a bellows coupling is its high torsional stiffness. The bellows element provides excellent torsional rigidity, making it suitable for applications where precise motion control and minimal torsional backlash are essential.

Bellows couplings find applications in various industries, including robotics, aerospace, medical devices, semiconductor manufacturing, and precision machinery. They are commonly used in applications where accurate positioning, high torque transmission, and compensating for misalignments are critical requirements.

In summary, a bellows coupling is a flexible and robust coupling solution that allows for angular misalignment, axial motion, and torsional flexibility in mechanical power transmission systems. Its ability to accommodate misalignments while maintaining high torsional stiffness makes it a preferred choice in precision positioning and motion control applications.

editor by CX 2024-02-15