Product Overview

The HUASHIDA HDPE Thin-Wall Casing Extruder is a high-speed, energy-saving system designed specifically for producing the protective outer jackets of PU foam thermal pre-insulated pipes. Known for its compact size and long service life, this machinery is the ideal choice for manufacturers serving district heating, cooling, and industrial oil/gas transmission sectors.

Pipe Diameter Range: 110mm – 1680mm

Key Applications: Outer casing for thermal pre-insulated pipes used in district energy and industrial fluid transport.

 Machine Advantages

High Output & Stability: The high-efficiency extruder ensures consistent performance with a larger production volume.

Material Efficiency: Precision engineering produces smooth, uniform pipe walls, significantly reducing raw material waste.

Labor Savings: High degree of automation allows the entire line to be managed by only one person.

Once-Forming Technology: No need for edge trimming; the pipe is perfectly formed in a single process.

Adjustable Precision: Pipe thickness can be easily adjusted to meet specific project requirements.

Technical Parameters

 Core Equipment Details

1. High-Efficiency Single Screw Extruder

Features a specialized barrier and mixing head screw combined with a new slotted (channel) barrel. This configuration guarantees excellent plasticization, large output, and stable performance.

2. Precision Die-Head

Composed of a mandril, spiral body, and copper calibrating sleeve. The internal surfaces are polished and chrome-plated to ensure smooth material flow and prevent rust. Bolts allow for the adjustment of wall thickness uniformity.

3. Vacuum Calibration Tank

Built with a stainless steel tank and a multi-directional spray cooling system. The vacuum pump creates a pressure differential that forces the fresh pipe against the copper sleeve, ensuring perfect outer diameter calibration and rapid cooling.

4. Frequency-Controlled Haul-off Machine

Driven by an AC motor with frequency conversion to match extrusion speeds perfectly. Includes an automatic length-measuring device for precision cutting.

5. No-Dust Cutting System

Utilizes a blade punching principle for clean, dust-free cuts. Includes a synchronous movement device to maintain accuracy during continuous production.

6. Intelligent Control System

The complete line is controlled by a PLC with a user-friendly Human-Machine Interface (HMI). All technical parameters are easily set and monitored via the touch screen.

7. Automatic Discharging Frame

Features a stainless steel surface with a pneumatic overturn system for automatic discharging.

Production Line Composition

1 set Vacuum loader

1 set Hopper dryer

1 set High-efficiency single screw extruder

1 set Vacuum calibration table

1 set Water spraying tank

1 set Hauling machine

1 set Cutting machine

1 set Discharging Frame

Company Introduction

Qingdao Huashida Machinery Co., Ltd is one of the top manufacturers of plastic extrusion machines in China, specialized in dealing with Steel pipe in terms of anticorrosion and insulation technology, R&D of the coating technique, design and manufacture of the equipment for coating, products and materials, researching and development of plastic extrusion equipments, especially of Vacuum Calibrating method PE insulation jacket pipe extrusion line, and PE hollow wall spiral pipe production line, PE PP sheet extrusion line, and pipe joints and welding tools such as heat shrinkable sleeve, Electro fusion sleeve etc.

Up to now, We have successfully entered the oversea markets of Russia, Iran, UAE, India, Belarus, Kazakhstan and son on. Our pipeline production line is nearly 50sets at home and abroad.
HUASHIDA Factory located in Qingdao High & New Technology Industrial Area- Qingdao Huashida industrial Park, covers an area of about 4000 square meters. We have obtained more than 10patents and many industry certifications at home and abroad. HUASHIDA company has high qualified and experienced teams for reaching& designing, manufacturing and site operation.
We have reliable products of different models because of our powerful making capacity. We can satisfy our customer's special need because of our outstanding R&D and design capacity. We can offer our user with timely and convenient techniqual support because of our perfect after-sales service.

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