What are the uses of transition joints? What issues should be noted during use?

Transition joints are widely used in our daily lives, especially in pipeline connections and cable laying, and have become an essential tool, playing a crucial role in the development of new infrastructure. As the most mainstream connector product currently available, I will now introduce to you the uses of transition connectors? What issues should be noted during use?

What are the uses of transition joints? What issues should be noted during use?

1、 What are the uses of transition joints

The use of transition joints is currently very extensive, mainly serving to connect two different types of pipelines, especially in the fields of telecommunications and power, where their role can be seen. For example, when a pipeline cannot be bent due to its material, an excessive joint needs to be used to connect the two pipelines in order to achieve the bending effect.

2、 Precautions for ferry joints

During the installation of transition joints, it is necessary to ensure that the diameter of the pipeline used is consistent with the diameter of the transition joint, and to take measures to prevent leakage and corrosion during the installation process. After all, whether the pipeline is used to protect cables and optical fibers or as a carrier channel for transporting liquids and gases, sealing is a prerequisite that must be considered. At the same time, while ensuring sufficient sealing, anti-corrosion treatment should also be done well.

The above is an analysis of the use of transition joints and the issues that need to be noted during installation. This product is now widely used in the power and communication industries, especially due to the rapid development of new infrastructure and the significant increase in market demand for transition joints. Understanding these issues will help avoid many unnecessary troubles in future use.

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Common Questions

Most Popular Questions.

Replace the hydraulic joint with a new one and thoroughly clean the welding slag and oil stains inside the pipe with kerosene or anhydrous ethanol before installation to ensure that the sealing surface is free of impurities.

Surface strengthening treatment:
Plated with hard chromium (thickness ≥ 0.02mm) or coated with molybdenum disulfide lubricant (suitable for working conditions of -20~200 ℃) at the thread;
The key parts are made of stainless steel material (such as 316L), and there is no corrosion after salt spray testing for ≥ 720 hours.
Suggestions for rust prevention management:
Install a moisture-proof silicone bag during storage, and apply rust proof oil to the contact surface;
Regularly check the cleanliness of the threads (by blowing with high-pressure gas to prevent impurities from accumulating).
Emergency response plan:
Rusted threads can be softened with WD-40 penetrant and cleaned with a nylon brush; Severe corrosion requires cutting off the damaged section and re tapping.

Accurate selection guide:
Working pressure ≤ 80% of the nominal pressure of the joint (e.g. 50MPa grade joint is selected for 35MPa system);
An additional 30% margin is added for impact conditions, and the pressure in high-temperature environments is converted based on the temperature coefficient (reduced by 20% for every 100 ℃).
Strengthen testing verification:
Provide a third-party pressure pulse test report (such as no leakage after 100000 0.5Hz square wave tests);
Add safety relief valves to critical areas (set value<10% of maximum system pressure).
Structural optimization suggestions:
Adopting a double-layer sealing structure (main seal+buffer ring) to absorb pressure fluctuations;
Thickened pipe wall material (such as high-pressure hose joint SC5S outer diameter ≥ 25mm).

Standardized control measures:
Establish a thread identification system (laser print "NPT-1/2-28UNF" on the joint);
Provide a size comparison table (including ISO/ANSI/DIN standard conversion parameters).
Precision detection equipment:
Use an electronic thread gauge (accuracy ± 0.01mm) to detect the tooth profile angle (60 ° or 55 °);
The ovality of the tube body is ≤ 0.05mm (it is recommended to submit samples for retesting before procurement).
Professional installation guidance:
Adopting the torque step method (initial torque 50% → compound torque 100% → final torque 120%);
It is recommended to use a hydraulic torque wrench (with an accuracy of ± 3%) in conjunction with a fixed torque socket.