China Best Sales BSPT/ NPT Thread Black Carbon Steel Pipe Fittings Threaded Merchant Couplings breakaway coupling

Product Description


Material 1.Carbon steel   2.Stainless steel
British Standard Threads:BS21
DIN Standard Threads:DIN2999
American Standard Threads:ASTM A865, ASTM A733
Hydraulic Test Test Pressure: Max2.5MPa
Working  Pressure: Max2.5MPa
Model  Thread both end nipple, thread 1 end nipple, close/full nipple
Surface 1.Galvanized  2.Electro galvanised   3.normal black  
Size OD:1/8”-6”
WT: SCH20, SCH40, SCH60, SCH80, SC100,  SCH120, SCH160, STD, xs,  xxs, CLASS A, CLASS B, CLASS C etc
Length: Standard or Special
Series Heavy series, Standard series, Mediun series, Light series
Connection Female
Shape Equal
Certificate ISO, BV
Customers’ drawing or designs are available.


Pipe nipple has been widely used in industry.Such as:
1.For use with residential gas, air and lp supply. 
2.Male National Pipe Taper threads on both ends for connecting female threaded pipes and fittings 
3.Nipple for joining 2 pipes or extending pipe length.



HangZhou CZPT Hardware Products Co.,Ltd is 1 of the leading companies dealing in exporting Pipes , Ball Vales,  Flanges, Forged Fittings etc.
     Our product range includes: Carbon, alloy and stainless steel.
     Valve grades including ANSI, JIS, DIN.
     Pipes in various grades including API-5CT, API- 5L,ASTM, ISO, JIS, DIN, GB/T.
     Flanges including ASME, JIS, DIN, NPT etc.
     We have the advanced equipment, skilled workers and strict QC system to ensure the accurate size and the high quality products. We believe in “Quality First, Service Best”!
     Welcome to send any inquiry to us and hope we have a good cooperation with your esteemed company in the future.


1.Wooden Case or Wooden Pallet
2.Inner Carton Box, Outside Wooden Case/Pallet
3.Customized according to customer’s requirements.

Delivery Details
1.Normal delivery times is from 15 to 30 days after receiving the deposit.
2. According to the quantities and specifications of each order.

1. Large Quantity Transport By Sea
2. Small Quantity or Sample Transport By Air
3. Inland Transport By Train
4. Shipping according to customers requirement 


1.24 hours online service for you.
2.Free sample can be provided.
3.Small order is acceptable.
4.OEM/ODM is acceptable.
5.Any third party testing is acceptable.
6.Promise to delivery the goods on time.


1.Q: How about trade terms ?
A: FOB, CFR, CIF will be accepted
2.Q: Can I customize the Steel pipe Fittings?
 A: You can, Our company supply ODM&OEM service, we can produce according to your requirement, bases you sent the CAD or design drawing
3.Q: How About the quality?
A: We support third party inspection, like BV,SGS etc.
4.Q: Any Value-added Services ?
A: Fortunately for you, we are very experience in this industry. We have equipment with necessities to perform in house painting, Coating, Pipe Cutting etc
5.Q:Can I get some samples? 
A:We can offer the samples free but you need paid the freight cost by yourself.


Connection: Female
Structure: Welding Forged Casting
Flexible or Rigid: Rigid
Material: Carbon Steel
Standard: ASTM, GB, JIS, GB, etc
Raw Material Pipe: Carbon Steel Pipe, Seamless Pipe, Stainless Pipe
US$ 0/Piece
1 Piece(Min.Order)

Request Sample



Customized Request


Functions and Modifications of Couplings

A coupling is a mechanical device that connects two shafts and transmits power. Its main purpose is to join two rotating pieces of equipment together, and it can also be used to allow some end movement or misalignment. There are many different types of couplings, each serving a specific purpose.


Functions of coupling are useful tools to study the dynamical interaction of systems. These functions have a wide range of applications, ranging from electrochemical processes to climate processes. The research being conducted on these functions is highly interdisciplinary, and experts from different fields are contributing to this issue. As such, this issue will be of interest to scientists and engineers in many fields, including electrical engineering, physics, and mathematics.
To ensure the proper coupling of data, coupling software must perform many essential functions. These include time interpolation and timing, and data exchange between the appropriate nodes. It should also guarantee that the time step of each model is divisible by the data exchange interval. This will ensure that the data exchange occurs at the proper times.
In addition to transferring power, couplings are also used in machinery. In general, couplings are used to join two rotating pieces. However, they can also have other functions, including compensating for misalignment, dampening axial motion, and absorbing shock. These functions determine the coupling type required.
The coupling strength can also be varied. For example, the strength of the coupling can change from negative to positive. This can affect the mode splitting width. Additionally, coupling strength is affected by fabrication imperfections. The strength of coupling can be controlled with laser non-thermal oxidation and water micro-infiltration, but these methods have limitations and are not reversible. Thus, the precise control of coupling strength remains a major challenge.


Couplings transmit power from a driver to the driven piece of equipment. The driver can be an electric motor, steam turbine, gearbox, fan, or pump. A coupling is often the weak link in a pump assembly, but replacing it is less expensive than replacing a sheared shaft.
Coupling functions have wide applications, including biomedical and electrical engineering. In this book, we review some of the most important developments and applications of coupling functions in these fields. We also discuss the future of the field and the implications of these discoveries. This is a comprehensive review of recent advances in coupling functions, and will help guide future research.
Adaptable couplings are another type of coupling. They are made up of a male and female spline in a polymeric material. They can be mounted using traditional keys, keyways, or taper bushings. For applications that require reversal, however, keyless couplings are preferable. Consider your process speed, maximum load capacity, and torque when choosing an adaptable coupling.
Coupling reactions are also used to make pharmaceutical products. These chemical reactions usually involve the joining of two chemical species. In most cases, a metal catalyst is used. The Ullmann reaction, for instance, is an important example of a hetero-coupling reaction. This reaction involves an organic halide with an organometallic compound. The result is a compound with the general formula R-M-R. Another important coupling reaction involves the Suzuki coupling, which unites two chemical species.
In engineering, couplings are mechanical devices that connect two shafts. Couplings are important because they enable the power to be transmitted from one end to the other without allowing a shaft to separate during operation. They also reduce maintenance time. Proper selection, installation, and maintenance, will reduce the amount of time needed to repair a coupling.


Maintenance of couplings is an important part of the lifecycle of your equipment. It’s important to ensure proper alignment and lubrication to keep them running smoothly. Inspecting your equipment for signs of wear can help you identify problems before they cause downtime. For instance, improper alignment can lead to uneven wear of the coupling’s hubs and grids. It can also cause the coupling to bind when you rotate the shaft manually. Proper maintenance will extend the life of your coupling.
Couplings should be inspected frequently and thoroughly. Inspections should go beyond alignment checks to identify problems and recommend appropriate repairs or replacements. Proper lubrication is important to protect the coupling from damage and can be easily identified using thermography or vibration analysis. In addition to lubrication, a coupling that lacks lubrication may require gaskets or sealing rings.
Proper maintenance of couplings will extend the life of the coupling by minimizing the likelihood of breakdowns. Proper maintenance will help you save money and time on repairs. A well-maintained coupling can be a valuable asset for your equipment and can increase productivity. By following the recommendations provided by your manufacturer, you can make sure your equipment is operating at peak performance.
Proper alignment and maintenance are critical for flexible couplings. Proper coupling alignment will maximize the life of your equipment. If you have a poorly aligned coupling, it may cause other components to fail. In some cases, this could result in costly downtime and increased costs for the company.
Proper maintenance of couplings should be done regularly to minimize costs and prevent downtime. Performing periodic inspections and lubrication will help you keep your equipment in top working order. In addition to the alignment and lubrication, you should also inspect the inside components for wear and alignment issues. If your coupling’s lubrication is not sufficient, it may lead to hardening and cracking. In addition, it’s possible to develop leaks that could cause damage.


The aim of this paper is to investigate the effects of coupling modifications. It shows that such modifications can adversely affect the performance of the coupling mechanism. Moreover, the modifications can be predicted using chemical physics methods. The results presented here are not exhaustive and further research is needed to understand the effects of such coupling modifications.
The modifications to coupling involve nonlinear structural modifications. Four examples of such modifications are presented. Each is illustrated with example applications. Then, the results are verified through experimental and simulated case studies. The proposed methods are applicable to large and complex structures. They are applicable to a variety of engineering systems, including nonlinear systems.
China Best Sales BSPT/ NPT Thread Black Carbon Steel Pipe Fittings Threaded Merchant Couplings   breakaway couplingChina Best Sales BSPT/ NPT Thread Black Carbon Steel Pipe Fittings Threaded Merchant Couplings   breakaway coupling
editor by CX 2023-06-09