China Standard Carbon Steel NPT A105 2 1/2 Inch Forged Bsp Threaded Half Coupling

Product Description

Basic Info.

What is half coupling?

Half coupling is used for small bore branching from a vessel or large bore pipe. It can be threaded or socket-type. It has a socket or thread end on only 1 side. A socket weld half coupling can be directly welded to large bore pipe to make a branch connection. It is used to take a small bore pipe branch-off from a large bore pipe where the pipe specification requirement is a socket weld in a small bore size. A threaded half coupling only has 1 thread end, and another end of the coupling should be a butt welding end with either a plain end or a bevel end.

 

 

Nominal Size

End- to- end

Outside Diameter

Length of Thread

DN

W

D

 

 

L5min

 

 

L2min

3000&6000

3000

6000

Unit:mm

6

32

16

22

6.4

6.7

8

35

19

25

8.1

10.2

10

38

22

32

9.1

10.4

15

48

28

38

10.9

13.6

20

51

35

44

12.7

13.9

25

60

44

57

14.7

17.3

32

67

57

64

17.0

18.0

40

79

64

76

17.8

18.4

50

86

76

92

19.0

19.2

65

92

92

108

23.6

28.9

80

108

108

127

25.9

30.5

100

121

140

159

27.7

33.0

Size

1/8″-4″

Pressure

2000lbs, 3000lbs, 6000lbs, 9000lbs

Type

Half coupling and full coupling

Connection end

Thread or socket weld

Material

Carbon steel, stainless steel, Alloy steel

Standard

ANSI B16.11

 

 

Q1. Where is your factory?

A1: Our company’s processing center is located in HangZhou, ZHangZhoug, China.

Equipped with various types of machinery and equipment, such as laser cutting machines and mirror polishing machines, we can provide a variety of personalized services according to customer needs.

Q2. What are your company’s main products?

A2: Our main products are stainless steel plates, coils, round or square tubes, bars, channel steel pipe fittings, etc.

Q3. How do you control quality?

A3: Factory testing and certification are provided CHINAMFG shipment, and third-party inspection is available.

Q4. What are your company’s strengths?

A4: We have many professionals and technicians, more competitive prices, and better after-sales service than other stainless steel companies.

Q5. How many countries have you exported to?

A5: Exported to more than 50 countries, mainly from the United States, Russia, United Kingdom, Kuwait, Egypt, Turkey, Jordan,

India etc.

Q6. Can you provide samples?

A6: There are small samples in the store. We can provide samples for free. The customer needs to bear the shipping cost.

Customized samples will take about 5-7 days.
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half coupling

What are the Signs of Wear, Corrosion, or Damage in a Half Coupling?

A half coupling, like any other pipe fitting, can experience wear, corrosion, or damage over time due to various factors. Regular inspection is crucial to detect any issues early on and prevent potential leaks or failures in piping and plumbing systems. Here are some signs to look for to identify wear, corrosion, or damage in a half coupling:

  • Visible Corrosion: Check for any signs of rust or corrosion on the surface of the half coupling. Corrosion can weaken the material and lead to leaks or structural failure. Surface discoloration, rough patches, or flaking of the metal are all indicators of possible corrosion.
  • Thread Damage: For threaded half couplings, inspect the threads carefully. Look for signs of stripping, galling, or deformation. Damaged threads can compromise the integrity of the connection and may result in leaks.
  • Cracks or Fractures: Examine the half coupling for any cracks, fractures, or signs of deformation. Cracks can lead to leaks and should be addressed immediately to prevent further damage.
  • Worn Socket or Weld Seam: In the case of socket weld or butt weld half couplings, inspect the socket or weld seam for signs of wear or damage. A worn socket may not provide a secure fit for the smaller pipe, while defects in the weld can compromise the joint’s strength and integrity.
  • Leaks: Any visible leaks or indications of moisture around the joint or coupling are clear signs of a problem. Leaks can be caused by damaged threads, corroded surfaces, or improper installation.
  • Reduced Performance: If the system’s performance declines, such as a decrease in flow rate or pressure, it could be a sign of a partially obstructed or damaged coupling.
  • Age and Service Life: Consider the age and service life of the half coupling. Over time, even well-maintained couplings may show signs of wear and fatigue, warranting closer inspection.

If any of these signs are observed, it is essential to take prompt action to address the issues. Depending on the severity of the wear, corrosion, or damage, the appropriate steps may include repairing or replacing the half coupling. In some cases, it may be necessary to inspect adjacent pipes and components for possible effects of the compromised coupling.

Regular maintenance and inspection practices can help identify signs of wear, corrosion, or damage in a half coupling before they escalate into more significant problems. Following manufacturer’s guidelines, adhering to industry standards, and using suitable materials for the application can contribute to the longevity and reliability of the half coupling and the entire piping or plumbing system.

half coupling

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.

half coupling

How does a Half Coupling Facilitate Pipe Connections and Disconnections?

A half coupling plays a crucial role in facilitating pipe connections and disconnections in piping and plumbing systems. It is a type of pipe fitting used to join two pipes of different sizes. Let’s explore how a half coupling enables these connections and disconnections:

  • Connection Process: When two pipes of different sizes need to be connected, a half coupling is used to create a secure joint. The larger end of the half coupling is welded or screwed onto the larger pipe, providing a stable base for the connection. The internal threads on the larger end of the coupling allow for easy attachment of the smaller pipe. The smaller pipe is threaded or inserted into the smaller end of the half coupling, and the connection is tightened to ensure a snug fit. The use of thread sealant or Teflon tape helps prevent leaks at the joint.
  • Transitioning Pipe Sizes: One of the primary uses of a half coupling is to transition between pipes of different sizes. For example, when a pipeline needs to change from a larger diameter to a smaller diameter, a half coupling is employed to create a smooth and efficient transition. This allows for the proper flow of fluids or gases without causing abrupt changes that could lead to pressure losses or turbulence.
  • Repair and Maintenance: Half couplings are also useful during repair and maintenance operations. In case a section of the pipe is damaged or needs replacement, the damaged portion can be cut out, and a new pipe can be attached using a half coupling. This facilitates quicker and more cost-effective repairs, as it eliminates the need to replace the entire pipeline.
  • Connection Points: Half couplings are often used at connection points where other components, such as valves, instruments, or equipment, need to be attached to the pipeline. By providing a secure and leak-proof joint, half couplings ensure the integrity of the overall system.
  • Temporary Connections: In some situations, temporary pipe connections may be required. Half couplings are versatile enough to allow for temporary connections that can be easily disassembled when needed. This flexibility is beneficial in scenarios where pipelines need to be altered or reconfigured temporarily for maintenance or testing purposes.

In summary, a half coupling is a crucial pipe fitting that enables efficient and reliable connections between pipes of different sizes. Its versatility, ease of installation, and ability to transition between pipe sizes make it an essential component in various industrial, commercial, and residential applications. Moreover, its role in facilitating quick repairs and temporary connections further enhances its significance in piping and plumbing systems.

China Standard Carbon Steel NPT A105 2 1/2 Inch Forged Bsp Threaded Half Coupling  China Standard Carbon Steel NPT A105 2 1/2 Inch Forged Bsp Threaded Half Coupling
editor by CX 2024-05-16

half coupling

As one of leading half coupling manufacturers, suppliers and exporters of products, We offer half coupling and many other products.

Please contact us for details.

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Manufacturer supplier exporter of half coupling

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