China factory Precision Casting Stainless Steel NPT Thread Socket Weld Pipe Fittings Full/Half/Reducing Couplings

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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What are the Maintenance Requirements for Half Couplings to Ensure Their Longevity?

Proper maintenance is essential to ensure the longevity and reliable performance of half couplings in piping and plumbing systems. Regular maintenance helps prevent wear, corrosion, and other issues that could lead to leaks or failures. Here are the maintenance requirements for half couplings:

• Inspection: Regularly inspect all half couplings in the system for signs of wear, corrosion, or damage. Check for visible leaks or indications of moisture around the joints. Perform visual inspections and, if necessary, use non-destructive testing methods to assess the integrity of the couplings.
• Cleaning: Keep the half couplings clean and free from dirt, debris, or other contaminants. Clean the coupling surfaces and surrounding areas during maintenance to ensure a proper fit and prevent corrosion.
• Lubrication: For threaded half couplings, apply a suitable lubricant or thread sealant when assembling the connection. This helps prevent galling and ensures a smooth and secure fit between the threads.
• Protection from Corrosion: Take measures to protect the half couplings from corrosion, especially in environments where corrosion is likely. Consider using corrosion-resistant materials for the couplings or applying protective coatings to prevent rusting.
• Temperature and Pressure Considerations: Ensure that the half couplings are suitable for the operating temperature and pressure of the system. High-temperature or high-pressure applications may require special materials or additional maintenance considerations.
• Replacement of Worn or Damaged Couplings: If any half coupling shows signs of wear, damage, or reduced performance during inspections, promptly replace it with a new one. Avoid using couplings that do not meet the necessary standards or show signs of fatigue.
• Proper Installation: During maintenance or replacement, ensure that the half couplings are correctly installed following the manufacturer’s instructions and industry best practices. Proper installation is crucial for achieving a secure and leak-free connection.
• Consider Thermal Expansion: Account for thermal expansion and contraction in the system to prevent stress on the half couplings and other components. Adequate flexibility and expansion joints can help accommodate temperature changes.
• Regular System Checks: Perform regular system checks to monitor the overall health and performance of the piping or plumbing system. Address any issues detected during these checks promptly to prevent cascading problems.

Adhering to these maintenance requirements will help ensure the longevity and reliable operation of the half couplings, contributing to the overall efficiency and safety of the piping or plumbing system.

Are there Industry Standards or Certifications for Half Couplings?

Yes, there are industry standards and certifications for half couplings to ensure their quality, performance, and safety. These standards are established by various organizations to provide guidelines for manufacturers, distributors, and users of half couplings. Compliance with these standards helps maintain consistency, reliability, and compatibility within the industry. Some of the prominent standards and certifications related to half couplings include:

• ASME B16.11: The American Society of Mechanical Engineers (ASME) sets the ASME B16.11 standard for forged fittings, including socket weld and threaded half couplings. This standard covers the requirements for materials, dimensions, ratings, testing, and marking of forged fittings used in high-pressure applications.
• ASTM A105 / ASTM A182: ASTM International establishes standards for materials used in various industries. ASTM A105 covers forged carbon steel piping components, including couplings, for ambient and higher-temperature service. ASTM A182 includes specifications for forged or rolled alloy-steel pipe flanges, forged fittings, and valves and is commonly referenced for high-temperature or corrosive applications involving half couplings made from alloy steels.
• API 5CT / API 5L: The American Petroleum Institute (API) develops standards for the oil and gas industry. API 5CT specifies requirements for casing and tubing, and API 5L covers seamless and welded steel line pipe. In oil and gas applications, half couplings used for connecting casing and tubing components are expected to meet the API standards.
• ISO 9001: The International Organization for Standardization (ISO) sets the ISO 9001 standard for quality management systems. Manufacturers of half couplings can obtain ISO 9001 certification to demonstrate their commitment to consistent quality and continuous improvement in their processes and products.
• UL Listing: Underwriters Laboratories (UL) offers product testing and certification services. Half couplings used in fire protection systems or other safety-critical applications may undergo testing and receive UL listing to ensure compliance with fire safety and performance standards.
• Pressure Equipment Directive (PED): In the European Union, the Pressure Equipment Directive sets requirements for the design, manufacture, and conformity assessment of pressure equipment, including half couplings used in pressurized systems. Compliance with PED is mandatory for certain pressure equipment intended for use in the EU market.

It is essential for users and buyers of half couplings to verify that the products they purchase meet the relevant industry standards and certifications. Ensuring compliance with these standards helps assure the performance, safety, and reliability of half couplings in various applications and industries.

What are the Various Types of Half Couplings and Their Specific Applications?

Half couplings come in different types, each designed to cater to specific applications and requirements in piping and plumbing systems. The various types of half couplings and their specific applications are as follows:

• Threaded Half Couplings: Threaded half couplings have internal threads on one end, allowing for easy connection to pipes with matching external threads. These couplings are commonly used in applications where a secure and leak-proof joint is needed, such as connecting valves, instruments, or equipment to the pipeline.
• Socket Weld Half Couplings: Socket weld half couplings have a socket on one end, which allows for the insertion of the pipe without threading. The joint is then welded for a strong and permanent connection. Socket weld half couplings are widely used in high-pressure applications and systems that require frequent disassembly.
• Butt Weld Half Couplings: Butt weld half couplings are designed for butt welding, which involves welding the coupling directly to the larger pipe end. The other end can be used to attach a smaller pipe. These couplings are commonly used in critical applications where a smooth and continuous inner surface is required to prevent turbulence and pressure losses.
• Reducing Half Couplings: Reducing half couplings are used when a transition between different pipe sizes is needed. One end of the coupling has larger threads or a larger socket to accommodate a larger pipe, while the other end has smaller threads or a smaller socket to connect a smaller pipe. These couplings are commonly used in systems that require a change in pipe size, such as reducing the flow rate or connecting equipment with different pipe sizes.
• Mechanical Grip Half Couplings: Mechanical grip half couplings use a mechanical mechanism to grip and secure the smaller pipe without welding or threading. They are commonly used in temporary connections or situations where frequent disassembly is necessary, such as in temporary test setups or during equipment maintenance.

The choice of half coupling type depends on the specific application, the pipe materials, the operating conditions, and the required joint strength. It is essential to follow industry standards and guidelines when selecting the appropriate type of half coupling to ensure the safety and efficiency of the piping or plumbing system.

In summary, various types of half couplings cater to different needs in piping and plumbing systems. Whether for permanent connections, temporary applications, or transitions between different pipe sizes, half couplings offer versatile solutions for joining pipes securely and efficiently.

editor by CX 2024-02-26