Composite HDPE Casing Vacuum Profiling Extrusion Machinery

Huashida’s high-efficiency extrusion line produces black HDPE outer jackets for PU foam pre-insulated pipes. It delivers fast production speed and low energy consumption with a compact layout and easy operation. Fitted with an automatic control system, it ensures stable and long-running performance.

• 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

• This high-efficiency extruder boosts output while keeping stable operation.
• It produces uniform, smooth pipe walls to reduce raw material consumption and supports adjustable wall thickness.
• The pipe realizes full one-pass forming with no edge trimming required.
• Highly automated, the line can be operated by a single operator to cut labor costs.

The single screw is equipped with a barrier mixing head and paired with a newly designed slotted barrel. This structure ensures excellent plasticization, high throughput and consistent running performance.

The vacuum calibration tank consists of a frame, stainless steel tank body, vacuum unit, spray cooling system and position adjuster. The vacuum pump evacuates air from the sealed tank, pressing the freshly extruded pipe tightly against the sizing copper sleeve to fix its outer diameter. Spray nozzles discharge cooling water from all directions to rapidly cool the pipe surface.

The haul-off machine consists of a drive unit, hauling tracks, clamping mechanism, adjustment system, side plates and base frame. Its tracks are driven by AC motors with variable frequency control to adapt to various extrusion speeds. Equipped with an automatic length counter, it enables cutting to preset lengths.

This cutter adopts blade punching technology for dust-free cutting. It consists of a cutting assembly, clamping assembly, synchronous motion mechanism and frame.

It features a stainless steel tabletop and adopts pneumatic turnover for automatic discharging.

Founded in 2003, Qingdao Huashida Machinery Co., Ltd. focuses on the R&D and production of pipeline anti-corrosion equipment and supporting raw materials. As a leading domestic maker of heat-shrinkable sleeves and matching machinery, Huashida has won extensive recognition from customers around the world. Many of our equipment designs are patent-protected, and we have obtained ISO 9001, ISO 14001 environmental management and ISO 45001 occupational health and safety certifications.

To date, over 500 production lines have been exported to Russia, Kazakhstan, Belarus, Egypt, Iran, Indonesia and other countries. Continuously optimized based on practical production experience, Huashida’s heat-shrinkable sleeve equipment has been upgraded to the fourth generation. The full production line delivers a tidy layout, intelligent operation and high efficiency, cutting energy, raw material and labor consumption. Optimized components guarantee uniform wall thickness and improved shrinkage performance, tensile strength and elongation at break. Our products satisfy varied pipeline anti-corrosion requirements, and our professional after-sales team provides on-site service and online video training to solve problems quickly.