Product Description
Product DescriptionFire fighting ductile iron grooved coupling and fitting with UL FM CE ISO certification 1.Name:FM UL Approved ductile iron grooved pipe fitting rigid coupling (Rigid coupling, Reducing coupling, Flexible coupling, Mechanical Tee, Mechanical cross, U-Bolt mechanical tee, elbow, cross, tee, flange adapter, split flange,cap
| Brand | JUNT |
| Company Type | Manufacturer |
| Standard | ANSI,ASTM,DIN,JIS,GB,BS |
| Materal | Ductile Iron (ASTM A536 Grade 65-45-12) |
| Color | Red RAL3000 , Orange , Bule or according to custom requirements |
| Surface Treatment | Paint, Epoxy, Galvanization or Dacroment |
| Threaded | BSPT NPT |
| Certification | UL FM CE ISO 9001 |
| Delivery Time | Normally within 15-30days |
| Pressure | 300PSI 500PSI 2.5MPA |
| Payment Terms | T/T L/C OR Other |
| Useage
|
1) Automatic sprinkler system for fire production on commercial,civil and municipal constructions like water supplying ,gas supplying , heat supplying , etc |
| 2)Industrial pipeline system on shipping , mine , textile oil field , power plant , etc | |
| 3)Pipeline system on subway station , railway station airport , seaport, brided , etc |
Our company
HangZhou CHINAMFG Machinery Auxiliaries Co.,Ltd is established in 2004,is a professional manufacturer specialized in the R&D,Pro-duction ,sale and service of ductile iron Grooved Couplings and Pipe Fittings. Our company is a large enterprise group composed of 1 main factory, 3 branch factories which cover-s an area of 68000m2 and has an annual production capacity of more than 50000 tons. We have an experienced team, around 500 skilled staff members, 20 percent of them are engineers and technicians who are professional and hardworking.We are equipped with automation molding line, China 416 automation molding line, Erich automation sand mixing line, CNC lathe, WINTER mold machining center and so on.
We have a very professional laboratory with full serious of testing and inspection as leak testing, raw material receiving inspection, batch chemical composition inspection, microstructure testing, dimension inspection, first article inspection, in-process inspection and final visual inspection in order to ensure the product quality.
Packing&Delivery
1)JUNT Large boxes ,non-wood pallets (110L*110W*12H)with PE film,27boxes per pallet at most.
2)JUNT Samal boxes,non-wood pallets(110L*110W*12H)with PE film ,54boxes per pallet at most.
3)We can also pack products as per customer’s requirement.
4) Delivery Details : 5-30 days after order
FAQQ: Are you trading company or manufacturer ?
A: We are factory.Exported abroad directly from our own factories,so the price is competitive.
Q: How long is your delivery time?
A: Generally it is 5-10 days if the goods are in stock. or it is 15-20 days if the goods are not in stock, it is according to quantity.
Q: Do you provide samples ? is it free or extra ?
A: Yes, we could offer the sample for free charge but do not pay the cost of freight.
Q: What is your terms of payment ?
A: Payment=1000USD, 30% T/T in advance ,balance before shipp-ment.
If you have another question, pls feel free to contact us as below:
Alisa shi
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What Are the Maintenance Requirements for Rigid Couplings?
Rigid couplings are known for their simplicity and low maintenance requirements. Since they do not have moving parts or flexible elements, there are minimal wear and tear issues. However, some maintenance considerations for rigid couplings include:
1. Regular Inspection: It is essential to perform periodic inspections of the rigid couplings to check for any signs of wear, damage, or misalignment. Regular inspections can help identify potential issues early and prevent further problems.
2. Shaft Alignment: Proper shaft alignment is critical for rigid couplings. During installation or whenever maintenance work is performed on the connected machinery, the shaft alignment must be checked and adjusted if necessary. Misalignment can lead to premature coupling failure and cause additional stress on connected equipment.
3. Lubrication: Most rigid couplings do not require lubrication since they have no moving parts. However, some special designs or large-sized couplings may have set screws or other fasteners that require lubrication. It is essential to follow the manufacturer’s guidelines regarding lubrication, if applicable.
4. Corrosion Protection: In corrosive environments, protecting the rigid couplings from corrosion is crucial. This can be achieved through the use of corrosion-resistant materials or coatings.
5. Periodic Re-tightening: If the rigid coupling uses set screws or other fasteners, periodic re-tightening may be necessary to maintain the integrity of the connection. This is particularly important in applications with high vibrations or heavy loads.
6. Temperature Considerations: Rigid couplings may experience thermal expansion or contraction, especially in high-temperature environments. It is essential to consider the thermal expansion characteristics of the coupling material and the connected shafts to ensure proper functioning under varying temperatures.
7. Professional Maintenance: In complex systems or critical applications, it is advisable to seek professional maintenance and alignment services. Expert technicians can ensure proper installation, alignment, and maintenance of rigid couplings, reducing the risk of unexpected failures.
Overall, rigid couplings are designed for reliability and longevity, and proper maintenance practices can further enhance their performance and lifespan. Regular inspections and alignment checks are vital for identifying and addressing potential issues before they escalate into costly problems.
How Does a Rigid Coupling Handle Angular, Parallel, and Axial Misalignment?
Rigid couplings are designed to provide a fixed and rigid connection between two shafts. As such, they do not have any built-in flexibility to accommodate misalignment. Therefore, when using a rigid coupling, it is essential to ensure proper shaft alignment to avoid excessive forces and premature wear on connected equipment.
Angular Misalignment: Angular misalignment occurs when the axes of the two shafts are not collinear and form an angle with each other. Rigid couplings cannot compensate for angular misalignment, and any angular misalignment should be minimized during installation. Precision alignment techniques, such as laser alignment tools, are often used to achieve accurate angular alignment.
Parallel Misalignment: Parallel misalignment, also known as offset misalignment, happens when the axes of the two shafts are parallel but have a lateral displacement from each other. Rigid couplings cannot accommodate parallel misalignment. Therefore, precise alignment is crucial to prevent binding and excessive forces on the shafts and bearings.
Axial Misalignment: Axial misalignment occurs when the two shafts have an axial (longitudinal) displacement from each other. Rigid couplings cannot address axial misalignment. To prevent thrust loads and additional stresses on bearings, it is essential to align the shafts axially during installation.
In summary, rigid couplings are unforgiving to misalignment and require precise alignment during installation. Any misalignment in a rigid coupling can lead to increased wear, premature failure of components, and reduced overall system efficiency. Therefore, it is crucial to use appropriate alignment techniques and tools to ensure optimal performance and longevity of the connected equipment.
Materials Used in Manufacturing Rigid Couplings:
Rigid couplings are designed to provide a strong and durable connection between two shafts, and they are commonly made from a variety of materials to suit different applications. The choice of material depends on factors such as the application’s environment, load capacity, and cost considerations. Some common materials used in manufacturing rigid couplings include:
- 1. Steel: Steel is one of the most widely used materials for rigid couplings. It offers excellent strength, durability, and resistance to wear. Steel couplings are suitable for a wide range of applications, including industrial machinery, automotive systems, and power transmission.
- 2. Stainless Steel: Stainless steel couplings are used in applications where corrosion resistance is crucial. They are well-suited for environments with high humidity, moisture, or exposure to chemicals. Stainless steel couplings are commonly used in food processing, pharmaceuticals, marine, and outdoor applications.
- 3. Aluminum: Aluminum couplings are known for their lightweight and corrosion-resistant properties. They are often used in applications where weight reduction is essential, such as aerospace and automotive industries.
- 4. Brass: Brass couplings offer good corrosion resistance and are commonly used in plumbing and water-related applications.
- 5. Cast Iron: Cast iron couplings provide high strength and durability, making them suitable for heavy-duty industrial applications and machinery.
- 6. Bronze: Bronze couplings are known for their excellent wear resistance and are often used in applications involving heavy loads and low speeds.
- 7. Plastics: Some rigid couplings are made from various plastics, such as nylon or Delrin. Plastic couplings are lightweight, non-conductive, and suitable for applications where electrical insulation is required.
It’s essential to consider the specific requirements of the application, including factors like load capacity, operating environment, and cost, when choosing the appropriate material for a rigid coupling. The right material selection ensures that the coupling can withstand the forces and conditions it will encounter, resulting in a reliable and long-lasting connection between the shafts.
editor by CX 2024-05-08