Views: 0 Author: Site Editor Publish Time: 2025-07-09 Origin: Site
With the continuous upgrading of pipeline materials, small-diameter five-layer HDPE pipes have become the "new favorite" in fields such as gas transportation and cable protection due to their excellent performance. The core supporting their efficient production is precisely the small-diameter five-layer HDPE pipe production line. This system integrating precision machinery and intelligent control—what makes it exceptional? Let's explore in depth.
一、Complete Production Line
Material Handling System: Comprises a vacuum feeder and four drying hoppers, responsible for precise transportation and drying of raw materials like PE, EVOH, and adhesives. This ensures material purity and stability, laying the foundation for subsequent extrusion.
Extrusion Unit: Formed by five single-screw extruders of different models as the "core of layered production"—JWS65/33 main extruder handles outer-layer PE with high output (120-150 kg/h); Two JWS35/25 extruders separately process adhesive and EVOH barrier layers (precise control at 3-8 kg/h); JWS30/28 assists in inner-layer PE extrusion; JWS25/25 specializes in producing four color marking lines (3-5 kg/h), enabling independent feeding for the five-layer structure.
Molding and Sizing System: The die (including the die head and mandrel) fuses five-layer materials into a pipe prototype. A 9-meter vacuum tank rapidly sizes the pipe via negative pressure, and a 9-meter spray tank further cools and solidifies it, ensuring dimensional accuracy (e.g., chip-free cutting accuracy ≤5 mm).
Post-processing System: A three-jaw tractor (driven by a servo motor) stably controls the production line speed (0.3-8 m/min), a chip-free cutting machine performs precise cutting, a single-station winder neatly collects materials, and a hot-melt printer (metering accuracy ±0.3%) achieves clear marking, forming a fully automated closed loop.
二、Core advantanges
The reason why this production line has become the preferred choice in the industry lies in its irreplaceable technical strengths:
Multi-layer co-extrusion technology: Through the coordination of independent extruders and precision molds, "seamless bonding" of different materials such as PE, EVOH, and adhesives is achieved. The five-layer structure is formed in one step, increasing production efficiency by over 30% compared to traditional processes.
Intelligent control system: Equipped with a Siemens PLC control cabinet, all parameters (rotation speed, temperature, etc.) can be set and stored. It has alarm functions for motor overload, torque exceeding the limit (automatic shutdown after 3 minutes of 105% overload), ensuring stable and controllable production throughout.
High-precision guarantee: From raw material ratio (e.g., EVOH content of 5-6%) to finished product dimensions (pipe diameter 50-125mm, compatible with multiple specifications of SDR9-SDR21), and then to cutting and printing precision, the error control in the whole process is within the millimeter level, meeting strict industry standards.
Flexible operation and maintenance support: Priority remote debugging services are provided. For on-site support, engineers respond quickly. The whole machine is guaranteed for 1 year, with lifetime maintenance and sufficient spare parts (such as screw disassembly tools, heating coils, etc.), reducing the risk of downtime.
三、Performance
The "hardcore strength" of small-diameter five-layer HDPE pipes originates from their scientific layered design, demonstrating significant advantages compared to traditional single-layer/three-layer pipes:
In short, the five-layer structure achieves a triple upgrade of "strength + barrier + safety", with a service life of over 50 years, far exceeding the 30 years of traditional pipes.
四、Application
With its outstanding performance, the products of the small-diameter five-layer HDPE pipe production line are widely used in:
· Gas transportation: The EVOH barrier layer prevents gas leakage, and the conductive layer resists static electricity, making it suitable for gas stations and municipal gas pipelines.
· Cable protection: With compressive, corrosion-resistant, and flame-retardant properties, it safeguards underground cables from external damage.
· Municipal/industrial sectors: Applicable to small-scale water supply networks, chemical liquid transport pipes, etc., adapting to complex working conditions.
From raw materials to finished products, and from efficiency to quality, the small-diameter five-layer HDPE pipe production line has redefined the pipeline production standards through technological innovation. Whether in the gas industry that prioritizes safety or the cable protection field that emphasizes durability, it delivers a dual guarantee of "high-efficiency production + reliable products".
