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Help CenterSingle Ended Weldable Male Coupling Internal Socket for Manual Welding Threaded Base
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Although this part has a threaded and hexagonal structure and may be colloquially referred to as a "plug," judging from its deep cylindrical cavity at the top and overall shape, it is actually a single-ended welding adapter (often called a plain shank union or cup union within the industry).
This type of adapter is typically used at the end of piping systems. Its internal cylindrical cavity is designed for manual welding (socket weld) directly to a tube, or to serve as a connection port for instrument impulse lines or precision equipment.
To help you fully understand and provide accurate selection criteria, I have listed the core parameters for this welding adapter and for the conventional ferrule cap you mentioned.
I. Core Parameters of This Part (Single-Ended Welding Adapter)
If you are looking for the part shown in the image, you typically need to pay attention to the following key dimensions:
Thread Specification: The external thread at the bottom determines which equipment or flange it can be screwed into. Common specifications include metric M14, M20 or imperial G1/2, R1/4, etc.
Plain Shank/Cup Inner Diameter: The diameter of the hollow interior at the top determines the outer diameter of the tube it can accommodate. Common examples include Φ6mm, Φ8mm, Φ10mm, etc.
Hexagon Across Flats Dimension: The width of the hexagon on the side (often called the S value) determines the size of wrench you need to tighten it.
Material and Temperature/Pressure Resistance: Common materials include 304/316 stainless steel, brass, etc. The maximum working pressure for this type of adapter is typically between 1.0 MPa and 40 MPa, depending on the specific structure and material.
II. Core Parameters of a Conventional "Ferrule Cap"
If you subsequently need to purchase a ferrule-type cap for sealing a pipeline, its parameter logic is completely different from that of the welding adapter:
Tube Outer Diameter Specification: The ferrule cap fits over the outside of the tube. Its core parameter is the tube outer diameter (OD) it accommodates, e.g., Φ6mm, Φ10mm, etc.
Thread Type: The tail thread used for tightening and securing. Common types include ZG, G (BSPP), NPT, etc.
Sealing Method:
Cone Seal: Relies on the cone surface at the front of the cap compressing against the ferrule to create a seal.
O-Ring Seal: Relies on a rubber O-ring for a face seal, allowing for easier assembly and disassembly.
Manufacturing Standards: Common national standards (e.g., GB/T 3760) or international standards (e.g., ISO 8434-1). These standards specify mechanical dimensions such as the total length (L) of the cap and the hexagon across flats (S) for different tube diameters.
💡 Suggestion:
If you plan to purchase this part shown in the image to replace an interface on your equipment, it is recommended that you use a caliper to measure the external thread diameter at the bottom (to determine the thread specification) and the inner diameter of the hollow cavity at the top (to determine the tube size). This will help you find an exact matching model.
This weldable male coupling features a robust internal socket design, specifically tailored for manual welding on threaded bases. Key advantages include:
High Durability: Constructed from premium stainless steel, it resists corrosion and withstands high temperatures, extending product lifespan.
Easy Installation: The internal socket allows for straightforward manual welding, reducing labor time and minimizing errors during assembly.
Versatile Compatibility: Ideal for threaded base applications in plumbing, HVAC, and industrial piping systems, ensuring secure connections under standard pressures.
Customizable Options: Available in various sizes to fit specific project requirements, enhancing flexibility across different setups.
Technical specifications highlight the product's reliability and performance. Below is a summary of key parameters:
| Parameter | Value |
|---|---|
| Material | Stainless Steel |
| Size Range | Customizable (e.g., 1/2" to 2") |
| Thread Type | Internal Socket |
| Welding Method | Manual |
| Application Pressure | Standard industrial levels |
Customers benefit from reduced installation time, lower risk of leaks, and long-term cost savings due to minimal maintenance needs. The coupling's design ensures a tight seal, improving safety and efficiency in welding operations.
Shanghai Quanbao leverages its expertise from Shanghai, China, to provide dependable electronic materials backed by rigorous quality control. Our commitment to excellence ensures that every coupling meets industry standards for reliability. Partner with us for tailored solutions that elevate your welding projects—contact our team today to discuss customization options or place an order.
Frequently Asked Questions (FAQ)
Q: What materials are used in this coupling?
A: It is made from high-grade stainless steel, offering excellent corrosion resistance and durability for long-term use.Q: Can the size be customized for specific applications?
A: Yes, sizes are customizable upon request to ensure a perfect fit for your threaded base requirements.Q: How do I install this coupling for manual welding?
A: Simply align the internal socket with the threaded base and weld manually using standard procedures; no special tools are needed.Q: Is it suitable for high-pressure environments?
A: Designed for standard industrial pressures; consult us for specific high-pressure adaptations if required.Q: What industries commonly use this product?
A: Ideal for plumbing, HVAC, automotive, and general industrial piping where secure welding connections are essential.Q: Are there any certifications available?
A: Products adhere to general industry standards; detailed certifications can be provided upon inquiry based on your needs.Q: How does it prevent leaks in welding applications?
A: The precise internal socket design and weldable construction ensure a tight, seamless fit that minimizes leakage risks.Q: What is the typical lead time for orders?
A: Lead times vary based on customization; standard items ship quickly, while bespoke options may take additional time—contact us for estimates.
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