Product Description
Product Description
Steel flexible joint is also called clamp, open expansion joint, steel flexible pipe joint. Steel flexible joint is a kind of pipe connection, reliable performance, easy to install products. At low pressure, by the elastic deformation of the sealing ring, to achieve the purpose of sealing; When the pressure increases, the medium acts on the sealing ring to play the role of self-sealing, and there is a gap between the pipe ends to compensate for the displacement and deflection of the pipe caused by thermal expansion and cold contraction.
The working temperature of the clamp joint is generally -30ºC-+130ºC. The medium property is weak acid, weak alkali and lubricating oil range can be applied. If beyond the above range can also provide our company with the nature of the medium parameters or optional parameters or optional specified rubber ring material. In addition to the connection function, the joint can also provide compensation, withstand axial force, provide Angle, reduce vibration wave, adapt to the change of foundation.
The advantages of clamp joint:
1 Clamp joint has good continuity, will not produce distortion, easy to achieve the ideal laying state.
2 Clamp pipe joint in a free state, do not bear the weight of the pipe, not subjected to external shear, especially DN200 pipe diameter, more must consider the weight of the pipe.
3. It is easy to keep the coaxial position when installing the clamp joint to ensure the uneven distribution of the radial clearance between the inner diameter of the pipe clamp and the outer diameter of the pipe. The rubber ring will be deformed under high pressure due to the large local clearance, which will affect the sealing effect and even destroy the rubber ring.
4. It is suitable for the application in the subsidence zone, which can reduce the Angle between the pipe segments caused by the subsidence of the support pier.
5 is conducive to pipeline maintenance. Turn the pipe, save labor and effort when changing the pipe.
Detailed Photos
Product Parameters
PN1.6/2.5/4.0/6.4MPa KRHD
| DN(mm) | Dw(mm) | Allowable Angle Φ |
Installation length L (mm) |
Maximal length (mm) |
Fitting bolt d×L (mm) |
| 80 | 89 | 17.90 | 100 | 110 | M12*60 |
| 100 | 108 | 15.06 | 100 | 110 | M14*60 |
| 125 | 133 | 13.05 | 105 | 115 | M14*60 |
| 150 | 159 | 12.09 | 110 | 120 | M14*60 |
| 175 | 194 | 10.51 | 110 | 120 | M16*60 |
| 200 | 219 | 9.33 | 116 | 126 | M16*75 |
| 225 | 245 | 8.36 | 122 | 132 | M16*80 |
| 250 | 273 | 7.51 | 127 | 137 | M18*90 |
| 300 | 325 | 6.32 | 130 | 140 | M18*100 |
| 350 | 377 | 5.45 | 135 | 145 | M18*100 |
| 400 | 426 | 4.80 | 140 | 150 | M18*110 |
| 450 | 480 | 4.28 | 145 | 155 | M18*110 |
| 500 | 530 | 3.88 | 150 | 160 | M18*120 |
| 600 | 630 | 3.27 | 155 | 165 | M18*120 |
| 700 | 720 | 2.86 | 160 | 170 | M20*120 |
| 800 | 820 | 2.51 | 165 | 175 | M20*130 |
| 900 | 920 | 2.24 | 170 | 180 | M20*130 |
| 1000 | 1571 | 2.02 | 175 | 185 | M20*130 |
| 1200 | 1220 | 1.69 | 180 | 190 | M22*140 |
| 1400 | 1420 | 1.45 | 185 | 195 | M22*140 |
| 1600 | 1620 | 1.27 | 190 | 200 | M22*140 |
| 1800 | 1820 | 1.13 | 195 | 205 | M22*150 |
| 2000 | 2571 | 1.01 | 200 | 210 | M24*150 |
| 2200 | 2571 | 1.01 | 205 | 215 | M24*150 |
| 2400 | 2420 | 1.01 | 210 | 220 | M24*150 |
| 2600 | 2620 | 1.01 | 215 | 225 | M24*160 |
| 2800 | 2830 | 1.01 | 220 | 230 | M27*160 |
| 3000 | 3571 | 1.01 | 225 | 230 | M27*160 |
| 3200 | 3220 | 1.01 | 230 | 240 | M27*180 |
Datas above are only for reference,if you want to know more details, please click here to contact us.
Installation Instructions
1. Prepare groove pipe sections, fittings and accessories that meet the requirements.
2. Check whether the rubber sealing ring is damaged and put it on the end of a steel pipe.
3. There should be a certain gap between the end and both ends of the steel pipe close to the end and both ends of the pipe which has been covered with rubber sealing ring. The clearance shall meet the standard requirements.
4. Put the rubber seal ring on the end of another steel pipe, make the rubber seal ring in the middle of the interface, and apply lubricant on the same side.
5. Check the axis of the pipe.
6. Install upper and lower clamps on the outer side of rubber seal-ing ring at the interface position, and clip the collar convex edge into the groove.
7. Press the upper and lower clamp ears with hand force, tighten the collar of the clamp with a wooden hammer, and tighten the upper and lower clamps tightly.
8. At the clamp screw hole position, put on the studs and tighten the nuts evenly to prevent the rubber sealing ring from wrin-kling.
9. check and comfirm that the collar convex edge is clamped into the groove.
products application
Company Profile
HangZhou Ruixuan pipeline equipment factory was founded in 1996.It is an excellent enterprise specializing in manufacturing and selling pipe fittings.It’s located in Xicun village ,HangZhou city,ZheJiang province ,the concentrated area of pipeline equipment industry in China.The company factory is located in Xicun town pipeline equipment industrial park.It covered an area of20000 square meters.
At present, the company has the production capacity of pipeline equipment with a maximum diameter of 4000mm, and its main products are: Steel expansion joint, flexible waterproof sleeve, large diameter flange, double flange force transfer expansion joint, large deflection loose sleeve compensation joint, spherical compensation joint, sleeve compensator, bellows compensator, non-metallic compensator, rubber expansion joint, DC medium no thrust sleeve compensator, flexible expansion pipe and other pipeline equipment. The annual production capacity is 30 million sets.
The flexible telescopic pipe equipment is mainly used in the pipeline crossing different geological structures under different conditions and the application of pipe installation drop, reduce or avoid the impact of geological settlement and crustal activity on the pipeline, so that the construction unit can save more than 50% of the cost when purchasing the equipment. The rubber expansion joint series products of the company, the maximum production diameter of 3600mm, have been applied in millions of units of thermal power projects in China for many times, and have been praised by the users.
The company passed ISO9001:2008 quality management system certification in 2009 and ISO14000:2004 environmental management system certification in 2009. The company has a strict quality control system, standard production process, standard factory inspection hand section, to ensure that every product meets the national standards and customer requirements.
Business philosophy: responsible production of products, return the trust of customers; To build a community with a sense of belonging and appreciate employees’ contributions; Make a contribution to the society of enterprises, give back to the good times. HangZhou Ruixuan pipeline equipment factory is willing to work with friends from all walks of life hand in hand, mutual support, create a better future!
Certifications
FAQ
Q:Can you make the product as per client’s requirement?
A:Yes, we can make it with your exact requirement.
Q:What are your payment terms?
A:T/T (30% as deposit, the rest 70% will be paid before delivery), L/C at sight.
Q:Where is your nearest loading port?
A:ZheJiang , HangZhou or ZheJiang , China.
Q:How can you guarantee the quality or any warranty?
A:If any quality problems during use, all the products can be returned or according to consumer’s requests.
Q:Do you accept small quantity order?
A:Of course we do.
Q:And what is your shipment and delivery time?
A:By sea or air. Normally 7 to 14 Days for delivery, according to your order quantity.
What are the Maintenance Requirements for Stainless Steel Couplings to Ensure Their Longevity?
To ensure the longevity and optimal performance of stainless steel couplings, regular maintenance is essential. The maintenance requirements for stainless steel couplings typically include:
- Regular Inspection: Conduct routine visual inspections of the coupling to check for signs of wear, corrosion, or damage. Inspect the coupling’s fasteners and ensure they are properly tightened.
- Lubrication: Some stainless steel couplings may require periodic lubrication of the moving parts to reduce friction and wear. Follow the manufacturer’s guidelines for the appropriate lubricant and frequency of application.
- Cleaning: Keep the coupling clean from debris, dirt, and contaminants. Regularly clean the coupling using appropriate cleaning agents to prevent the build-up of foreign particles that could lead to accelerated wear.
- Alignment Check: Verify that the shafts connected by the coupling are properly aligned. Misalignment can lead to increased stress on the coupling and reduce its service life. If misalignment is detected, take corrective measures to realign the shafts.
- Torque Check: Periodically check the torque on the coupling’s fasteners to ensure they are properly tightened. Loose fasteners can result in coupling slippage and potential failure.
- Replacement of Worn Parts: If any components of the stainless steel coupling show signs of wear or damage beyond acceptable limits, they should be promptly replaced with new parts from the original manufacturer.
It is important to follow the maintenance schedule recommended by the coupling manufacturer. Different applications may have specific maintenance requirements based on factors such as operating conditions, torque levels, and environmental exposure. By adhering to proper maintenance practices, operators can extend the lifespan of the stainless steel coupling, reduce the risk of unexpected failures, and ensure consistent and reliable performance in their mechanical systems.
Differences Between Stainless Steel Couplings and Aluminum or Carbon Steel Couplings
Stainless steel couplings, aluminum couplings, and carbon steel couplings are commonly used in various industrial applications, but they differ in their material properties, performance characteristics, and suitability for specific environments. Here are the key differences between these types of couplings:
- Material Composition:
- Corrosion Resistance:
- Strength and Durability:
- Weight:
- Temperature Tolerance:
– Stainless Steel Couplings: Stainless steel couplings are made from alloyed steel containing a minimum of 10.5% chromium. This chromium content creates a passive oxide layer that provides excellent corrosion resistance.
– Aluminum Couplings: Aluminum couplings are made from aluminum, a lightweight metal known for its high strength-to-weight ratio. Aluminum offers good corrosion resistance but is not as resistant as stainless steel.
– Carbon Steel Couplings: Carbon steel couplings are made from plain carbon steel, which has a higher carbon content. While carbon steel offers good strength and toughness, it is more susceptible to corrosion than stainless steel or aluminum.
– Stainless Steel Couplings: Stainless steel couplings offer the highest level of corrosion resistance among the three materials. They are well-suited for use in corrosive environments, such as marine applications or food processing, where protection against rust and chemical exposure is essential.
– Aluminum Couplings: Aluminum couplings provide moderate corrosion resistance, but they are not recommended for highly corrosive environments or applications with exposure to acidic or alkaline substances.
– Carbon Steel Couplings: Carbon steel couplings have the lowest corrosion resistance of the three materials and may require additional coatings or treatments to protect against rust and corrosion.
– Stainless Steel Couplings: Stainless steel couplings offer excellent strength and durability, making them suitable for heavy-duty applications and environments with high mechanical loads.
– Aluminum Couplings: Aluminum couplings are lightweight and have good strength but may not be as durable as stainless steel or carbon steel couplings.
– Carbon Steel Couplings: Carbon steel couplings provide good strength and toughness, but they may not be as durable as stainless steel couplings in corrosive environments.
– Stainless Steel Couplings: Stainless steel couplings are heavier than aluminum couplings but comparable to or slightly lighter than carbon steel couplings.
– Aluminum Couplings: Aluminum couplings are the lightest among the three materials, making them suitable for applications where weight reduction is a priority.
– Carbon Steel Couplings: Carbon steel couplings are heavier than aluminum couplings but offer higher strength and load-bearing capacity.
– Stainless Steel Couplings: Stainless steel couplings can withstand a wide range of temperatures, making them suitable for both high-temperature and cryogenic applications.
– Aluminum Couplings: Aluminum couplings have good thermal conductivity but may not be suitable for extremely high-temperature applications.
– Carbon Steel Couplings: Carbon steel couplings have good temperature tolerance but may be limited in extremely high-temperature or cryogenic environments.
The choice of coupling material depends on the specific requirements of the application, such as the operating environment, load capacity, and corrosion resistance needed. Stainless steel couplings are often preferred for applications where corrosion resistance and durability are paramount, while aluminum couplings are chosen for their lightweight properties. Carbon steel couplings find use in applications requiring good strength and moderate corrosion resistance.
Industry Standards and Certifications for Stainless Steel Couplings
Yes, there are industry standards and certifications that govern the manufacturing and performance of stainless steel couplings. These standards ensure that the couplings meet specific quality and safety requirements for various applications.
Some of the common industry standards and certifications for stainless steel couplings include:
- American National Standards Institute (ANSI): ANSI sets standards for various industrial components, including couplings. ANSI standards ensure the couplings’ dimensional accuracy, material quality, and performance characteristics.
- International Organization for Standardization (ISO): ISO provides globally recognized standards for couplings, among other products. ISO standards cover areas like coupling design, materials, and manufacturing processes.
- American Society for Testing and Materials (ASTM): ASTM standards define the material properties and testing procedures for stainless steel couplings, ensuring their durability and reliability.
- European Committee for Standardization (CEN): CEN develops European standards for couplings, adhering to the European Union’s regulations for quality and safety.
- Underwriters Laboratories (UL): UL is a certification organization that tests and certifies couplings for compliance with safety and performance standards. UL-listed couplings have undergone rigorous testing and evaluation.
When selecting stainless steel couplings, it is essential to ensure that they comply with relevant industry standards and carry appropriate certifications. These standards and certifications provide assurance of the coupling’s quality, performance, and safety, making them suitable for specific applications.
editor by CX 2023-10-10