China Hot Melt Three-Way Welded Fittings Supplier - Durable PE Pipe Connections from Factory
Core Definitions and Characteristics
The core definitions and characteristics are as follows:
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Material properties: Made from polyethylene (PE), it has corrosion resistance, light weight and high toughness.
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Connection principle: By heating the end faces of the pipe and the fitting to a molten state, they are fused under pressure and then cooled to form a molecular-level sealed interface.
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Function Positioning: Used for conveying liquids or gases (such as tap water, gas), to ensure system sealing and structural integrity.
Main Classification and Characteristics
They are divided into two categories based on structural differences:
Applicable pipe diameter: Outer diameter ≤110mm (small diameter pipe).
Typical components: Socket elbows, tees, plugs and threaded fittings (such as internal thread unions).
Connection method: The pipe is inserted into the fusion joint of the fitting and heated and fused by hand with a hot fuse.
Applicable pipe diameter: Outer diameter ≥75mm (for large-diameter pipes).
Typical components: butt joints, tees, flanges and plugs.
Connection method: Special butt welding machine heat the end of the tube, fuse under pressure and then cool.
Core Advantage
Molecular fusion at the fusion interface eliminates the risk of leakage.
Resistant to chemical corrosion and has a service life of over 50 years.
Low density (about 1/8 of steel pipe), no additional anti-corrosion treatment required.
Application Scenarios
Municipal water supply, fire protection pipe networks and drainage systems.
Frequently Asked Questions
They are made from Polyethylene (PE), which provides key material properties including excellent corrosion resistance, light weight, and high toughness.
The connection is formed by heating the end faces of both the pipe and the fitting until they reach a molten state. They are then fused together under pressure and cooled to create a molecular-level sealed interface.
Hot-melt socket tubes are typically used for smaller pipe diameters (outer diameter ≤110mm) and are joined manually. Hot-melt butt fittings are designed for larger diameters (outer diameter ≥75mm) and require a special butt welding machine.
Thanks to their chemical corrosion resistance and robust molecular fusion joints, these fittings offer high durability with a service life of over 50 years.
They are widely used in critical municipal infrastructures, including municipal water supply systems, fire protection pipe networks, and various drainage systems.