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 CZPT 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 

Can a Reducer Coupling be Threaded or Welded onto Pipes?

Yes, a reducer coupling can be either threaded or welded onto pipes, depending on the specific design and intended application. The two methods of connection offer different advantages and considerations:

• Threaded Connection: Some reducer couplings come with threaded ends, allowing them to be easily screwed onto the pipe ends. This type of connection is convenient for systems that may need disassembly or reconfiguration in the future. Threaded couplings can be installed and removed without requiring specialized tools or welding equipment. However, it is essential to use thread sealants or Teflon tape to ensure a tight and leak-free connection.
• Welded Connection: In some applications, it may be more appropriate to weld the reducer coupling onto the pipes. This method provides a permanent and robust connection that is well-suited for high-pressure or critical systems. Welded joints offer excellent strength and sealing, making them less prone to leaks compared to threaded connections. However, welding requires specialized skills and equipment, and the process can be more time-consuming and irreversible.

The choice between threaded and welded connections depends on various factors, including the system’s pressure and temperature requirements, the pipe material, and the level of permanence desired. Here are some considerations for each method:

• Threaded Connection Considerations:
• Quick and easy installation without the need for welding.
• May be suitable for low to medium pressure systems.
• Threaded joints may require periodic inspection and re-tightening to maintain their integrity.
• Potential for leakage if not properly sealed or maintained.
• Welded Connection Considerations:
• Provides a permanent and reliable connection.
• Well-suited for high-pressure and critical systems.
• Minimal risk of leakage when welded correctly.
• Requires skilled welders and proper welding equipment.
• Difficult to disassemble or modify once welded.

When choosing between threaded and welded connections for a reducer coupling, it is crucial to consider the specific requirements of the system, as well as the available resources and expertise for installation. Consulting with qualified engineers or professionals can help determine the most suitable connection method for a given application.

How to Select the Right Reducer Coupling Material Based on the Fluid Being Conveyed?

Choosing the appropriate material for a reducer coupling is crucial to ensure its compatibility with the fluid being conveyed in plumbing and piping systems. The choice of material depends on factors such as the type of fluid, temperature, pressure, and the surrounding environment. Here are some guidelines to help you select the right reducer coupling material:

• 1. Identify the Fluid: Determine the type of fluid that will flow through the piping system. Different fluids have varying chemical compositions and properties, which can affect the material’s corrosion resistance and overall performance.
• 2. Consider Corrosion Resistance: If the conveyed fluid is corrosive or contains chemicals that can react with certain materials, choose a reducer coupling material with excellent corrosion resistance. For corrosive environments, materials like stainless steel, PVC, CPVC, or certain types of alloys are often preferred.
• 3. Temperature and Pressure: Evaluate the operating temperature and pressure of the system. Some materials may have limitations in extreme temperatures or high-pressure conditions. Ensure the selected material can withstand the specific operating conditions.
• 4. Fluid Compatibility: Check if the material is compatible with the specific fluid to avoid any adverse reactions that could compromise the coupling’s integrity or contaminate the conveyed fluid.
• 5. Environmental Factors: Consider the surrounding environment, including exposure to UV radiation, outdoor elements, or potential impact on the material’s mechanical properties.
• 6. Regulatory Requirements: Ensure that the selected material complies with any industry standards or certifications required for the intended application, especially if the system conveys potable water or is subject to specific regulations.

Common materials used for reducer couplings include:

• Stainless Steel: Offers excellent corrosion resistance and is suitable for a wide range of fluids, making it a popular choice for many applications.
• PVC and CPVC: These materials are lightweight and corrosion-resistant, making them ideal for non-corrosive fluid conveyance and low-pressure systems.
• Brass: Known for its durability and resistance to dezincification, brass is often used for water and gas applications.
• Copper: Suitable for water and gas systems, copper is resistant to corrosion and has antimicrobial properties.
• Carbon Steel: Provides strength and durability but may require corrosion protection in some environments.
• Alloys: Various alloy materials offer enhanced properties such as higher corrosion resistance or better mechanical strength compared to individual metals.

Consulting with a knowledgeable engineer or a professional in the field can be beneficial in making the right material selection for your specific plumbing or piping system. Proper material selection ensures the reducer coupling’s reliability and longevity, as well as the overall integrity of the fluid conveyance system.

Types of Reducer Couplings for Various Applications

Reducer couplings come in various types and configurations to suit different plumbing and piping applications. Some of the common types of reducer couplings include:

• Threaded Reducer Coupling: This type of reducer coupling has external male threads on one end and internal female threads on the other end. It is used for connecting pipes with threaded ends of different sizes.
• Socket Reducer Coupling: A socket reducer coupling, also known as a solvent-weld reducer coupling, is designed for use with plastic pipes, such as PVC or CPVC. It is used to join pipes with different diameters using solvent cement.
• Compression Reducer Coupling: Compression reducer couplings are used for connecting pipes with compression fittings. They provide a leak-proof connection and are commonly used in water supply systems.
• Flanged Reducer Coupling: Flanged reducer couplings have flanges on both ends, and they are used for connecting pipes with flanged ends of different sizes. They are often used in large-scale industrial applications.
• Push-Fit Reducer Coupling: This type of reducer coupling is designed for quick and easy installation without the need for any special tools. It is commonly used in plumbing systems that utilize push-fit fittings.
• Expansion Reducer Coupling: Expansion reducer couplings are used in systems that experience thermal expansion and contraction. They allow for the dimensional changes without causing stress on the pipes.

The choice of the right type of reducer coupling depends on the specific application, the materials of the pipes being connected, and the joining method used in the plumbing or piping system. It is essential to select a reducer coupling that provides a secure and reliable connection while ensuring smooth flow transition between pipes of different diameters.

editor by CX 2023-08-31