Product Description
CNBM INTERNATIONAL CORPORATION
Build your world with our materials.
We are a primary subsidiary of China National Building Material Group Co., Ltd.
CNBM Group is a central government-owned enterprise and a Fortune Global 500 company (Ranking 203th in 2019). It is the largest building material manufacturer and service provider in the world, with 15 publicly-listed companies and over 180,000 employees (2017).
CNBM Water Section is 1 of the pioneering suppliers of pipes, fittings and systems in China.
We are leading the market by supplying:
- Ductile iron water and sewer pipes, fittings, valves and couplings and adaptors
- Ductile iron access covers and gratings
- Other types of pipes and fittings
Why choose CNBM?
- Government Credit
CNBM Intl is a primary subsidiary of CHINAMFG Group, a Chinese central governmental enterprise. We’ve been accessed by D&B as Duns Registered 4A1 level since 2012, which endorsed us as 1 of the safest suppliers to work with in China.
- Industry Leader
As an industry leader, CHINAMFG Intl is also a top-ranking buyer of iron ore and coking coal in the world. Our raw materials’ cost and quality are under strict control from A to Z.
- Strong Logistics Capability
1. Professional Logistics team
2. 20,000 containers + 30,000 M3bulk vessel per year = Cost-effective and Prioritized Shipments
3. 50000 M2 Dubai Logistics Park solely-owned by CNBM
- VIP services
1. Professional Sales Team
2. Multi-language Sales Managers
3. One-to-One fast response
- One-Stop Purchase Solution
Over 800 kinds of industrial products within CHINAMFG product range.
Product Description
|
Product Name |
Ductile Iron Pipe and Fittings |
|
Material |
Ductile Iron |
|
Registered Brand |
CMAX or CNBM |
|
Nominal Diameter |
DN80 – DN2000mm |
|
Application |
Water supply, Drainage, Civil Engineering, Construction & Housing, etc. |
|
Standard |
EN545, EN598, ISO2531 |
|
Joint Type |
T type, Flange type, Self-restrained type |
Our Factory
Certifications
SGS Certificates
TUV Certificates
Packaging & Shipping
Wooden Cases/Pallet with wrap film or according to customer’s requirements.
Some Projects
Our Services
- Usually you can get our quotation within ONE day. In particular cases, we are committed to providing it within 48 hours.
- Total technical supports from our senior consultant engineers.
- Timely & Cost-efficient delivery.
- Real time information of Chinese market.
- Special discounts and protective policies provided to our distributors/partners.
FAQ
- Are you a trading company or manufacturer?
- CNBM is a large-scale central governmental industrial group with its own manufacturing sector, research and development sector, trading sector and logistics sector.
- I have some special requirement about specifications.
- We have a well-rounded product range, which endows us with the capability of applying many special specifications. Please feel free to contact us with yours.
- Do you accept OEM service?
- Yes, we do.
- What is your delivery time?
- It depends on the size/complexity of your order and our own production schedule. Usually we provide a faster delivery than the industry’s average.
- What is the payment term?
- Our payment terms are negotiable.
- Can I have my own logo on the product?
- Sure, we can apply your own logo on the products according to your drawings.
- Can I get samples?
- Yes, you can. And you only need to bear the delivery costs, if the samples are not too big.
- How is your company’s experience?
- We have an over 20 years of experience in water industry and been exporting to over 56 countries. We cherish our reputation as a company and our customers love us.
- Can I request to change the form of packaging and transportation?
- Sure, we’re glad to fulfill your requirement. Yet please understand that extra costs may occur if the form of packaging and transportation are changed.
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Can flexible couplings accommodate variable operating conditions and loads?
Yes, flexible couplings are designed to accommodate variable operating conditions and loads in mechanical systems. They offer several features that allow them to adapt to changing conditions and handle different loads effectively. Below are the reasons why flexible couplings are well-suited for such applications:
Misalignment Compensation: Flexible couplings can handle misalignment between shafts, including angular, parallel, and axial misalignment. This capability allows them to accommodate slight shifts in shaft positions that may occur due to thermal expansion, vibration, or other factors, ensuring smooth operation even in changing conditions.
Shock and Vibration Absorption: Flexible couplings can dampen shocks and vibrations that result from sudden changes in load or operating conditions. The flexible element in the coupling acts as a buffer, absorbing and reducing the impact of sudden loads or transient forces, protecting connected equipment and increasing system reliability.
Variable Load Capacity: Flexible couplings come in various designs and materials, each with its load capacity range. Manufacturers provide different coupling models with varying load capacities to accommodate different applications. Properly selecting the right coupling for the specific load conditions ensures reliable power transmission even under varying loads.
Compensation for Thermal Expansion: Temperature changes can cause thermal expansion in mechanical systems, leading to shaft misalignment. Flexible couplings can handle the resulting misalignment, compensating for thermal expansion and ensuring continuous and smooth power transmission.
Torsional Stiffness: Flexible couplings are designed with a balance between flexibility and torsional stiffness. This property allows them to adapt to variable loads while still providing the necessary rigidity for efficient power transmission.
Durable Materials and Designs: Manufacturers produce flexible couplings from durable materials like stainless steel, aluminum, or engineered elastomers. These materials ensure that the couplings can withstand varying operating conditions, including temperature fluctuations, harsh environments, and high loads.
Dynamic Behavior: Flexible couplings have a dynamic behavior that enables them to operate smoothly and efficiently under changing loads and speeds. They can handle variations in rotational speed and torque while maintaining consistent performance.
Application Flexibility: Flexible couplings find applications in a wide range of industries, from automotive and aerospace to industrial and marine. Their versatility allows them to accommodate variable operating conditions and loads in different systems.
Summary: Flexible couplings are well-suited for applications with variable operating conditions and loads. Their ability to compensate for misalignment, absorb shocks and vibrations, and handle thermal expansion make them reliable components in mechanical systems. The availability of various coupling designs and materials allows for the selection of the appropriate coupling based on the specific application requirements, ensuring optimal performance and longevity in variable conditions.
What are the key considerations for selecting a flexible coupling for high-speed applications?
When selecting a flexible coupling for high-speed applications, several critical considerations should be taken into account to ensure optimal performance and reliability:
- Material and Design: Choose a flexible coupling made from high-quality materials that can withstand the high rotational speeds without experiencing excessive wear or fatigue. Consider designs that are specifically engineered for high-speed applications, ensuring they have the required torsional stiffness and damping characteristics.
- Balance: Imbalance at high speeds can lead to vibration and reduce the lifespan of the coupling and connected components. Look for precision-balanced flexible couplings that minimize vibration and avoid any potential resonance issues at operating speeds.
- Torsional Stiffness: In high-speed applications, torsional stiffness is crucial to maintaining accurate rotational timing and preventing torque losses. Choose a flexible coupling with adequate torsional stiffness to minimize angular deflection under load.
- Dynamic Balancing: Dynamic balancing is essential for flexible couplings used in high-speed applications. A dynamically balanced coupling reduces vibrations caused by rotational imbalances, increasing the smoothness and stability of the system.
- Temperature Resistance: High-speed operations can generate significant heat, so select a flexible coupling that can withstand the elevated temperatures without compromising its mechanical properties or causing premature failure.
- Alignment and Runout Tolerance: Accurate alignment of the coupling with the shafts is crucial to prevent additional stress and vibration. Consider couplings with high runout tolerance and ease of alignment to facilitate proper installation.
- Service Life and Maintenance: Evaluate the expected service life of the flexible coupling in high-speed applications. Low-maintenance couplings are desirable to reduce downtime and maintenance costs.
- Application Specifics: Consider the specific requirements of the high-speed application, such as the magnitude of torque, axial movement, and the presence of shock loads. Choose a coupling that can handle these specific demands while maintaining performance at high speeds.
- Compliance with Standards: Ensure that the selected flexible coupling complies with relevant industry standards and specifications, especially those related to high-speed performance and safety.
By carefully considering these key factors, engineers can choose a flexible coupling that meets the demands of high-speed applications, delivering reliable and efficient power transmission while minimizing the risk of premature wear, vibration, and downtime.
How do you select the appropriate flexible coupling for a specific application?
Choosing the right flexible coupling for a specific application requires careful consideration of various factors to ensure optimal performance, reliability, and longevity. Here are the key steps to select the appropriate flexible coupling:
- Application Requirements: Understand the specific requirements of the application, including torque and speed specifications, misalignment conditions, operating environment (e.g., temperature, humidity, and presence of corrosive substances), and space limitations.
- Torque Capacity: Determine the maximum torque that the coupling needs to transmit. Choose a flexible coupling with a torque rating that exceeds the application’s requirements to ensure a safety margin and prevent premature failure.
- Misalignment Compensation: Consider the type and magnitude of misalignment that the coupling needs to accommodate. Different coupling designs offer varying degrees of misalignment compensation. Select a coupling that can handle the expected misalignment in the system.
- Vibration Damping: If the application involves significant vibrations, choose a flexible coupling with good damping properties to reduce vibration transmission to connected equipment and improve system stability.
- Environmental Factors: Take into account the environmental conditions in which the coupling will operate. For harsh environments, consider couplings made from corrosion-resistant materials.
- Torsional Stiffness: Depending on the application’s requirements, decide on the desired torsional stiffness of the coupling. Some applications may require high torsional stiffness for precise motion control, while others may benefit from a more flexible coupling for shock absorption.
- Cost and Life-Cycle Considerations: Evaluate the overall cost-effectiveness of the coupling over its expected life cycle. Consider factors such as initial cost, maintenance requirements, and potential downtime costs associated with coupling replacement.
- Manufacturer Recommendations: Consult coupling manufacturers and their technical specifications to ensure the selected coupling is suitable for the intended application.
- Installation and Maintenance: Ensure that the selected flexible coupling is compatible with the equipment and shaft sizes. Follow the manufacturer’s installation guidelines and recommended maintenance practices to maximize the coupling’s performance and longevity.
By following these steps and carefully evaluating the application’s requirements, you can select the most appropriate flexible coupling for your specific needs. The right coupling choice will lead to improved system performance, reduced wear on equipment, and enhanced overall reliability in various mechanical systems and rotating machinery.
editor by CX 2024-02-25