China Hot selling High Quality Customization CNC Stainless Steel Tube Fitting Milling Turning Threaded Full/Half Coupling

Product Description

ABOUT US
HangZhou Suijin machinery Technology Co,.Ltd is a profational manufacturer in HangZhou city, our main process is investment casting/precision casting and machining, for casting process, we have 2 kinds of production line, 1 is precision casting, another is water glass with competitive cost.

Apart from the investment casting workshop and machine workshop, we also provide the CHINAMFG parts to meet the requirement for varial demand from our customer.

CERTIFICATIONS
Our company got the ISO9001 and IATF16949 certification, and aslo we are awarded the new high-tech enterprice by Chinese government, and we have more than 20 patent.

ADVANTAGES
 • More than 10 years experience on casting and machining
 • Advanced inspection equipment to ensure the tolerance
 • Flexible PO QTY to meet customer demand
 • Professional engineers in casting and machining
 • Competitive price and exllent parts quality
 • Nearby HangZhou port, on-time delivery

PROCESS FLOW

OEM&ODM SERVICE
HangZhou suijin machinery technology can provide the ODM&OEM service for customer, and main is ODM, we can manufacturing the customized parts according to 2D&3D, we have professional R&D team can take part in ealier development phase of the project.

AVALIABLE MATERIA & SURFACE TREATMENT

PRODUCT APPLICATION
AUTO PARTS

 • Exhaust inlet/outlet cone                                 • Shift sleeve                                 • Fuel rail bracket  
 • Tempreture sensor boss                                  • Mounting Brackets                      • Oxygen sensor boss 
 • Brake balance block                                        • EGR sensor boss                              • Exhaust valve body

ARCHITECTURAL HARDWARE

 • Mounting Base                                • Mounting plate                                                 • Bearing Covers   
 • Coupling                                          • Grount sleeve                                                  • Sprockets
 • Handle                                             • law glass curtain wall accessories                  • Side Plates                                                                                
AGRICULTURAL MACHINERY PARTS

 • Tooth Blocks                                         • Track shoes                                             • Bucket Teeth   
 • Track Links                                           • Clamping                                                 • Mounting Brackets
 • Lifting Eyes                                           • Quick Joint                                              • Trencher Tooth     
                  
MARINE HARDWARE
 • Star handle                                              • Door hinge                                          • Folding Dock Cleat   
 • Mirror Polished Mooring                          • Hollow base boat rope cleat               • Mounting Brackets

VALAVE/PUMP

 • Valve body                                   • Explosion-proof valves                              • Pipe fitting              

OTHERS
The casting part is wildly use in the industries, such as rail&transit parts, bicycle parts, casting impeller, food machine sorting components, solar mounting system parts, container safety parts, Electronic lock body, robot parts and so on, we have more than 20 patents related to this kinds of project in production.    

ADVANCED EQUIPMENTS 

Our company also equiped advance inspection equipment to meet the inspection requirement of the parts, so that we can sure the part can have a good quality.

MAIN EQUIPMENT LIST

FAQ 

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Can a Half Coupling be Used for Both Temporary and Permanent Pipe Connections?

Yes, a half coupling can be used for both temporary and permanent pipe connections, depending on the specific requirements of the application and the type of half coupling used.

Temporary Pipe Connections: Threaded half couplings are commonly used for temporary pipe connections. They allow for easy assembly and disassembly of the pipes without the need for welding. Threaded couplings offer quick installation and are ideal for situations where frequent changes or maintenance are necessary. For example, during construction or testing phases, temporary pipe connections may be required before the final system configuration is established.

Permanent Pipe Connections: Socket weld and butt weld half couplings are primarily used for permanent pipe connections. Once these couplings are welded to the pipes, the joint becomes integral, robust, and permanent. Socket weld couplings are commonly used in smaller diameter pipes, while butt weld couplings are more prevalent in larger diameter pipes and high-pressure applications. These types of couplings are well-suited for applications where a secure and leak-proof connection is essential for the long-term operation of the system.

It is essential to choose the appropriate type of half coupling based on the specific needs of the application. Consider factors such as the system’s operating conditions, pressure requirements, maintenance frequency, and future changes or expansions. Temporary connections using threaded half couplings provide flexibility and ease of maintenance but may not be suitable for high-pressure or critical systems. On the other hand, permanent connections using socket weld or butt weld half couplings offer maximum strength and reliability, but they require careful planning and welding expertise.

In some cases, half couplings may be used temporarily during system assembly or testing and later replaced with socket weld or butt weld couplings for permanent operation. This allows for easier adjustments during the initial setup while ensuring a durable connection in the long run.

Ultimately, the choice between temporary and permanent pipe connections using half couplings depends on the specific requirements of the project and the balance between flexibility and long-term reliability.

How do you Select the Right Half Coupling Material Based on the Fluid or Gas being Conveyed?

Choosing the appropriate material for half couplings is essential to ensure their compatibility with the fluid or gas being conveyed. The selection process involves considering several factors related to the nature of the conveyed substance and the specific operating conditions. Here’s a step-by-step guide on how to select the right half coupling material:

1. Identify the Conveyed Fluid or Gas: Determine the type of fluid or gas that will flow through the piping system. Different materials may be required depending on whether the conveyed substance is water, oil, gas, chemicals, steam, or any other medium.
2. Consider the Chemical Compatibility: Evaluate the chemical properties of the conveyed substance. Some fluids or gases can be corrosive or reactive with certain materials. Look for half coupling materials that are chemically resistant to the specific medium to prevent degradation or premature failure.
3. Assess the Temperature and Pressure: Take into account the operating temperature and pressure of the system. High-temperature fluids or gases may require materials with excellent heat resistance, while high-pressure applications demand strong and durable coupling materials that can withstand the stress.
4. Check for Abrasion or Erosion: In systems where the conveyed substance contains solid particles or abrasive materials, consider half coupling materials with good wear resistance to prevent premature wear and damage to the coupling surface.
5. Verify Material Standards: Ensure that the selected half coupling material complies with relevant industry standards such as ASTM, ASME, API, or ISO. These standards define the material’s properties and performance criteria, providing a reliable benchmark for quality and suitability.
6. Consider Environmental Conditions: Evaluate the environmental factors that can affect the coupling’s performance, such as humidity, UV exposure, or exposure to harsh chemicals. Choose materials with appropriate coatings or properties to withstand the specific environmental conditions.
7. Factor in Cost and Availability: Balancing performance requirements with cost considerations is essential. Select a half coupling material that meets the necessary performance criteria while fitting within the project’s budget. Additionally, ensure that the chosen material is readily available for procurement.

Common materials used for half couplings include carbon steel, stainless steel, alloy steel, brass, bronze, and various plastics such as PVC, CPVC, and PTFE. Each material has its advantages and limitations, making the selection process critical for a successful and reliable piping system.

By carefully considering the conveyed fluid or gas, chemical compatibility, temperature, pressure, abrasion resistance, and other relevant factors, you can make an informed decision and select the right half coupling material that will ensure a safe and efficient operation of the piping system.

What is a Half Coupling and How is it Used in Piping and Plumbing Systems?

A half coupling is a type of pipe fitting used in piping and plumbing systems to connect two pipes of different sizes. It is a short, threaded piece with one end designed to be welded or screwed onto a larger pipe, and the other end allows for the attachment of a smaller pipe. The half coupling has internal threads on one end and a plain or beveled surface on the other end.

Half couplings are typically made from materials such as stainless steel, carbon steel, brass, or other suitable alloys, depending on the application and the medium being transported through the pipes.

In piping systems, half couplings are used for various purposes:

1. Reducing Pipe Size: One common use of half couplings is to reduce the pipe size at a specific point in the system. For example, when a large pipe needs to be connected to a smaller pipe, a half coupling can be employed to create a smooth transition.
2. Connection Points: Half couplings are often used at connection points where equipment, valves, or instruments are attached to the pipeline. They provide a secure and leak-proof joint.
3. Repair and Maintenance: In the event of a pipe section damage, a half coupling can be used to cut out the damaged portion and replace it with a new pipe, facilitating quick repairs without the need to replace the entire pipeline.

The installation of a half coupling involves a few simple steps:

1. Cutting and Preparing the Pipe: The larger pipe, to which the half coupling will be attached, is cut to the desired length, and the edge is cleaned and beveled to ensure a proper welding or threading joint.
2. Attaching the Half Coupling: The half coupling is then welded or screwed onto the larger pipe end. For welding, proper welding techniques and safety measures must be followed to achieve a strong, reliable joint.
3. Connecting the Smaller Pipe: The smaller pipe is threaded or inserted into the other end of the half coupling. The connection is tightened to ensure a secure fit, and sealing materials like Teflon tape or thread sealant may be used to prevent leaks.

In plumbing systems, half couplings serve similar functions, connecting different pipes or fixtures of various sizes. The installation process may vary slightly, depending on the type of plumbing materials and the specific application.

In summary, half couplings are essential components in piping and plumbing systems, enabling the connection of pipes with different diameters and facilitating repairs or adding connection points with ease and efficiency.

editor by CX 2024-05-07