China factory Flange Adaptor/Dismantling Joint/Flexible Coupling flange coupling

Product Description

Product Description

 

Product Name	Ductile Iron Coupling with Wide range
Material	Ductile Iron Body (GGG50), Glavnized garbon steel bots/ Stainless Steel Bolts, CHINAMFG rubber ring
Registered Brand	CMAX or CNBM
Nominal Diameter	DN50 – DN600mm
Application	Water supply, Drainage, Civil Engineering, Construction & Housing, etc.
Standard	EN545, EN598, ISO2531
Coating	Fusion Bonded Epoxy (FBE), RAL5005, RAL 5017, R5015……

Certifications

SGS Certificates

TUV Certificates

Packaging & Shipping

Wooden Cases/Pallet with wrap film or according to customer’s requirements.

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 203^th 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).

CHINAMFG 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.

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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Flange Couplings in Corrosive or Harsh Environments

Flange couplings can be used in a wide range of environments, including corrosive or harsh conditions, depending on the material and coating used in their construction. The choice of material is a critical factor in determining the suitability of a flange coupling for such environments.

Materials:

Stainless steel flange couplings are commonly used in corrosive environments due to their high resistance to rust and corrosion. Stainless steel contains chromium, which forms a protective oxide layer on the surface, preventing the underlying metal from being exposed to corrosive elements.

In particularly aggressive or chemically harsh environments, super alloys or specialty materials like Hastelloy or Inconel may be used for flange couplings, providing even higher corrosion resistance and chemical stability.

Coatings:

In addition to material selection, certain coatings can further enhance the resistance of flange couplings to corrosive environments. For example, coatings like zinc plating or epoxy coatings can add an extra layer of protection against corrosion.

Sealing and Protection:

Flange couplings used in harsh environments may also incorporate specialized sealing elements to prevent the ingress of contaminants, moisture, or corrosive substances. Proper sealing can significantly extend the service life of the coupling and the connected equipment.

Regular Maintenance:

While flange couplings designed for harsh environments are built to withstand corrosive elements, regular maintenance is essential to ensure their optimal performance. Regular inspections, cleaning, and lubrication, as well as prompt replacement of any damaged components, are vital to maintaining the integrity and functionality of the coupling.

Application Considerations:

When using flange couplings in corrosive or harsh environments, it is essential to consider the specific requirements of the application. Factors such as the type and concentration of corrosive substances, temperature variations, and mechanical loads should be carefully assessed to select the most suitable flange coupling for the given environment.

Conclusion:

Flange couplings can be engineered to withstand corrosive and harsh environments by using appropriate materials, coatings, and sealing techniques. With proper selection, installation, and maintenance, flange couplings can provide reliable and durable performance in challenging industrial settings.

Key Features to Consider When Purchasing a Flange Coupling

When purchasing a flange coupling, it is essential to consider several key features to ensure it meets the specific requirements of your application. Here are the main factors to look for:

• Type of Flange Coupling: There are various types of flange couplings, such as rigid, flexible, and fluid couplings. Choose the type that best suits your application’s needs, considering factors like misalignment compensation, torsional stiffness, and vibration damping.
• Size and Dimensions: Select the flange coupling with the appropriate size and dimensions to fit your shafts and equipment. Consider shaft diameter, coupling length, and any space limitations.
• Material: Flange couplings can be made from various materials, including steel, aluminum, stainless steel, and elastomers. Choose a material that offers the required strength, corrosion resistance, and durability for your operating conditions.
• Torsional Rating: Check the torsional rating of the flange coupling to ensure it can handle the torque requirements of your application without failure or deformation.
• Misalignment Compensation: If your application experiences shaft misalignment, opt for a flexible flange coupling that can accommodate angular, parallel, and axial misalignment to prevent stress on connected equipment.
• Backlash: For precision applications, select a flange coupling with minimal or no backlash to maintain accurate positioning and reduce the effects of mechanical play.
• Operating Speed: Consider the operating speed range of the flange coupling to ensure it can handle the rotational speed requirements without issues like resonance or fatigue.
• Environmental Compatibility: Evaluate the flange coupling’s ability to withstand the environmental conditions of your application, such as temperature, humidity, and exposure to chemicals or corrosive substances.
• Installation and Maintenance: Choose a flange coupling that is easy to install and maintain, as proper installation and periodic maintenance are crucial for optimal performance and longevity.
• Cost and Value: Compare the cost of the flange coupling with its features and performance to ensure you are getting the best value for your investment.

By carefully considering these key features, you can select a flange coupling that not only meets the demands of your application but also ensures reliable and efficient power transmission while minimizing downtime and maintenance costs.

Limitations and Disadvantages of Flange Couplings

While flange couplings offer several advantages, they also have some limitations and disadvantages that should be considered when selecting them for a specific application:

• 1. Size and Weight: Flange couplings tend to be larger and heavier compared to some other coupling types. This can be a limitation in applications where space and weight are critical factors.
• 2. Higher Cost: Flange couplings can be more expensive to manufacture and install compared to simpler coupling designs like sleeve couplings or clamp couplings.
• 3. Complex Installation: Installing flange couplings may require more time and expertise due to their intricate design and multiple components, including bolts and gaskets.
• 4. Rigidity: Flange couplings are relatively rigid, which means they may not accommodate as much misalignment as flexible couplings. Excessive misalignment can lead to increased stress on the equipment and coupling, potentially resulting in premature failure.
• 5. Bolt Stress: Proper tightening of the bolts is crucial for the effective functioning of flange couplings. Over-tightening or under-tightening the bolts can lead to bolt fatigue or coupling slippage.
• 6. Noise and Vibration Transmission: Flange couplings, especially rigid designs, can transmit more noise and vibration compared to flexible couplings, potentially affecting the performance and longevity of connected equipment.
• 7. Maintenance: Flange couplings may require more frequent maintenance due to the presence of multiple components and the need to periodically check bolt tightness and gasket conditions.
• 8. Corrosion: Depending on the material used, flange couplings may be susceptible to corrosion in certain environments. Corrosion can compromise the integrity of the coupling and reduce its service life.

Despite these limitations, flange couplings are still widely used in various industrial applications due to their robustness, high torque capacity, and ability to handle heavy loads. Proper application, installation, and maintenance can help mitigate some of these disadvantages and ensure the reliable performance of flange couplings in a wide range of systems.

editor by CX 2024-05-07