China Hot selling ASME B16.11 Forged Fittings Sw Coupling Sw Half-Coupling Boss Sw Cap Sw 45deg Lateral Tee Socket Weld Fittings

Product Description

Product Description

Forged pipe fittings, also known as wrought pipe fittings, are a type of pipe fitting manufactured by forging a CZPT metal piece to form the desired shape. These fittings are commonly used in plumbing systems to join pipes and other components together. Forged fittings are known for their strength, durability, and resistance to high pressures and temperatures. They are usually made of materials such as carbon steel, stainless steel or alloy steel. Common types of forged fittings include elbows, tees, couplings, unions, sockets and caps. These fittings are often the first choice in applications where reliable and leak-free connections are critical, such as in the oil and gas, petrochemical and power generation industries. They are manufactured to various specifications and standards such as ASME B16.11 and MSS SP-83. When selecting forged fittings, it is important to consider factors such as material compatibility with the piping system, pressure and temperature ratings, and the type of connection required (socket weld or threaded). It is recommended to consult professionals or refer to relevant standards and specifications to correctly select and install forged pipe fittings.


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In general, coupling refers to the degree of interdependence between 2 components, modules, or subsystems within a system. It indicates the degree to which a change in 1 component may affect another. There are different types of coupling, including: 1. Tight coupling: In this type of coupling, 2 components are highly dependent on each other, and any change in 1 component requires a change in the other. 2. Loose coupling: In this type of coupling, 2 components are less dependent on each other and changes in 1 component do not significantly affect the other. In software engineering and system design, reducing coupling is often desirable because it promotes modularity, reusability, and maintainability. It also helps isolate and localize the impact of changes within the system.

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Company Profile

ZheJiang Cangrun Pipeline Equipment Co.,Ltd. specialized in pipe fittings ,flanges and nipples. Our company has strong technical force. With complete

production equipment, it has more than 120 sets of production equipment, including 8000 tons of 4 column press, 1600 tons of pushing machine,

800 tons of large pipe bending machine and 8 tons of forging hammer. It can produce valves, flanges, elbows, elbows, tees, crosses, reducers, pipe

caps, sockets and other pipe fittings and extension products of all specifications of carbon steel, alloy steel, stainless steel, pipeline steel, low-

temperature steel and other materials according to domestic and international and industrial standards, We adhere to quality first, customer first, is

our purpose.






1. What about your MOQ ?

MOQ is 1 piece, we can offer sample for free, customer just pay the transport charge.

2.What is the average lead time?

For samples, the lead time is about 7 days. For mass production, the lead time is 20-30 days after receiving the deposit payment. The lead times

become effective when (1) we have received your deposit, and (2) we have your final approval for your products. If our lead times do not work with

your deadline, please go over your requirements with your sale. In all cases we will try to accommodate your needs. In most cases we are able to do


3.What about payment term ?

You can make the payment to our bank account, Western Union or PayPal:

30% deposit in advance, 70% balance against the copy of B/L.

4. What about package ?

As usual with wooden pallet, wooden  case, we can also pack the products as customers’ requirement.

half coupling

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.

half coupling

What are the Differences Between Half Couplings and Full Couplings in Pipe Fittings?

In pipe fittings, both half couplings and full couplings serve the purpose of joining two pipes together, but they differ in their design and applications. Here are the key differences between half couplings and full couplings:

  • Design: The main difference lies in their design. A half coupling has one end with internal threads or a socket, allowing it to be connected to a threaded pipe or inserted into the end of a pipe without threading. The other end of the half coupling is an open end, ready to be welded or threaded to another pipe. On the other hand, a full coupling has both ends with female threads, enabling it to connect two threaded pipes directly without the need for welding.
  • Function: Half couplings are commonly used to create a joint between a pipe and a component such as a valve, pump, or pressure gauge. The open end of the half coupling facilitates easy attachment to the component, while the threaded or socketed end connects to the pipe. On the other hand, full couplings are used when a direct, rigid connection between two pipes is needed, providing a continuous flow path without any interruptions.
  • Application: Half couplings are frequently used in situations where frequent disassembly or maintenance may be required. For example, in systems with valves that need periodic inspection or replacement, a half coupling allows for easy removal without disturbing the entire pipeline. Full couplings, on the other hand, are more suitable for applications where a permanent, leak-proof connection is needed, such as in pressurized systems or critical process pipelines.
  • Length: Full couplings are typically longer than half couplings because they need to accommodate two threaded ends, while half couplings have one threaded or socketed end and an open end, making them shorter in length.
  • Installation: The installation process differs for half and full couplings. Half couplings are welded or threaded onto one pipe end and then connected to another pipe or component using welding or threading, respectively. Full couplings, on the other hand, directly join two pipes with threaded ends, requiring no additional welding or threading.
  • Flexibility: Half couplings offer more flexibility due to their ability to connect to different types of components or pipes with varying end connections. Full couplings are less flexible in this regard, as they can only join two threaded pipes together.

Overall, the choice between half couplings and full couplings depends on the specific requirements of the piping system, including the need for temporary connections, the type of components being attached, the nature of the fluid being transported, and the desired level of joint permanence and flexibility.

half coupling

What are the Standard Sizes and Dimensions Available for Half Couplings?

Half couplings, as pipe fittings used in piping and plumbing systems, are available in various standard sizes and dimensions to accommodate different pipe sizes and applications. The sizes and dimensions of half couplings depend on the pipe’s nominal diameter and the specifications set by industry standards organizations. Some common standard sizes and dimensions for half couplings are as follows:

  • Thread Sizes: Half couplings come with different thread sizes to match the corresponding pipe threads. Common thread sizes for half couplings include 1/8″, 1/4″, 3/8″, 1/2″, 3/4″, 1″, 1-1/4″, 1-1/2″, 2″, 2-1/2″, 3″, 4″, 5″, 6″, and larger.
  • Length: The length of a half coupling refers to the distance from one end to the other. It is typically a few inches, depending on the pipe size and application requirements. Lengths for half couplings can range from around 1 inch to 12 inches or more.
  • Outer Diameter (OD): The outer diameter of a half coupling refers to the measurement across the widest point of the coupling’s external surface. It corresponds to the pipe’s outer diameter it is intended to connect to. Common OD sizes for half couplings include 1.05″, 1.32″, 1.66″, 1.90″, 2.38″, 2.88″, 3.50″, 4.50″, 5.56″, 6.63″, 8.63″, and others.
  • Materials: Half couplings are available in various materials, as mentioned in the previous answer. The material selection depends on factors such as the type of fluid being transported, the temperature, the pressure, and the corrosion resistance requirements.

It is essential to refer to industry standards, such as ANSI (American National Standards Institute), ASME (American Society of Mechanical Engineers), or ASTM (American Society for Testing and Materials), to ensure that the half couplings meet the specific dimensional and material requirements of the application.

When selecting a half coupling, it is crucial to consider the following factors:

  • Pipe Size Compatibility: Ensure that the half coupling’s thread size matches the pipe’s thread size to create a secure and leak-proof connection.
  • Application Requirements: Consider the operating conditions, including pressure, temperature, and the nature of the fluid being transported, to choose the appropriate material and dimensions for the half coupling.
  • Standards Compliance: Select half couplings that meet industry standards to ensure safety and compatibility with other components in the system.

In summary, half couplings are available in various standard sizes and dimensions, with different thread sizes and materials to accommodate diverse pipe sizes and applications. Proper selection based on the specific requirements of the piping or plumbing system is essential for ensuring a reliable and efficient connection between pipes.

China Hot selling ASME B16.11 Forged Fittings Sw Coupling Sw Half-Coupling Boss Sw Cap Sw 45deg Lateral Tee Socket Weld Fittings  China Hot selling ASME B16.11 Forged Fittings Sw Coupling Sw Half-Coupling Boss Sw Cap Sw 45deg Lateral Tee Socket Weld Fittings
editor by CX 2023-08-04

half coupling

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