Model Meaning: "PH" indicates extension ring, and "12" indicates a nominal breaking load of 120kN.
Material: Made of hot-dip galvanized steel with a hot-dip galvanized surface treatment, it offers excellent corrosion resistance and is suitable for harsh outdoor operating environments.
Structure: Forged as a single piece, it generally has a ring-shaped structure with ring-type connectors at both ends. It is used to connect different fittings and adjust lengths. It features a simple structure and is easy to use.
Main Dimensions: 24mm diameter, 20mm hole diameter, 120mm ring length.
Technical Parameters: Nominal breaking load of 120kN, weight approximately 0.9kg.
Application: Used for connecting insulator strings to fittings, between clamps and insulator strings, and between lightning conductors and pole towers. It is a universal connection fitting.
The PH-12 extension ring is a general-purpose connection fitting with a breaking load of 120kN. It is primarily used to connect insulator strings to fittings, between clamps and insulator strings, and between lightning conductors and pole towers, extending or changing the connection length. It can also be used to extend, connect, and secure cables in power systems. It has a wide range of applications in the power industry. To understand the main applications of the PH-12 extension ring, we first need to understand its performance characteristics.
A high-quality PH-12 extension ring must meet the following characteristics:
High Strength
Made from high-quality, high-strength iron, its breaking load is guaranteed to be no less than 120kN, meeting the strength requirements of most industries and resisting damage even after prolonged use.
01
Electrical Performance
The electrical industry places high demands on electrical conductivity, effectively reducing resistance and energy loss, and avoiding overheating and other issues caused by poor electrical performance.
02
Flexible Connection
Its ring shape allows it to be connected to other hardware at both ends, facilitating installation and line routing adjustments.
03
Compact Structure
Its small size allows for quick installation, even in the smallest installation spaces, making it easier to transport and store.
04
Manufacturing processes often affect product performance, and this is also true for PH-12 extension rings. There are two main forming processes: forging and welding. A single-piece forged ring has no welds, allowing for even tensile stress, superior performance, and a reduced risk of fracture, making it suitable for high-load applications. Welding involves bending two sections of steel and then welding them together. The weld seam is weaker than the parent material, creating a weak point and prone to fracture during tension.
Heat treatment
Normalizing and tempering eliminate internal stresses generated during the forging process. Improper temperature control can reduce the toughness and strength of the ring, impacting its load-bearing capacity.
Surface treatment
In addition to galvanizing, PH-12 extension rings also undergo a passivation treatment to slow zinc oxidation.
Dimensional accuracy
Excessive dimensional deviations can lead to forced loading during installation, resulting in additional stress and reduced load-bearing capacity.
Thus, a qualified PH-12 extension ring is the result of a combination of high-quality materials and refined craftsmanship. The material determines its fundamental mechanical properties and corrosion resistance potential. High-quality steel is essential for a high breaking load. The craftsmanship ensures structural integrity, eliminates internal stresses, and enhances corrosion resistance, fully maximizing the material's performance while preventing performance degradation due to processing defects. Only high-quality PH-12 extension rings can ensure safe and stable operation in the fields of electricity, communications, etc.
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