Vacuum Calibration HDPE Jacket Pipe Extrusion Line

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 increases output while maintaining stable operation.
• It creates uniform, smooth pipe walls to cut raw material consumption and allows adjustable wall thickness.
• The pipe achieves complete one-pass forming and requires no edge trimming.
• Highly automated, the line can be run by one operator to lower labor costs.

The single screw comes with a barrier mixing head and is matched with a newly designed slotted barrel. This structure guarantees superior plasticization, high throughput and stable operation.

The vacuum calibration tank comprises a frame, stainless steel tank body, vacuum unit, spray cooling system and position adjuster. The vacuum pump removes air from the sealed tank, pressing the freshly extruded pipe firmly against the sizing copper sleeve to set its outer diameter. Spray nozzles release cooling water from all directions to quickly cool the pipe surface.

The haul-off machine is composed 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 accommodate different extrusion speeds. Fitted with an automatic length counter, it supports cutting at preset lengths.

This cutter uses blade punching technology to achieve dust-free cutting. It is made up 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. specializes in the R&D and manufacturing of pipeline anti-corrosion equipment and supporting raw materials. As a leading domestic manufacturer of heat-shrinkable sleeves and associated machinery, Huashida has earned wide recognition from global customers. A number of our equipment designs are protected by patents, and we hold ISO 9001, ISO 14001 environmental management and ISO 45001 occupational health and safety certifications.

To date, more than 500 production lines have been exported to Russia, Kazakhstan, Belarus, Egypt, Iran, Indonesia and other countries. Through continuous optimization based on practical production experience, Huashida’s heat-shrinkable sleeve equipment has been upgraded to the fourth generation. The complete production line features a neat layout, intelligent operation and high efficiency, reducing consumption of energy, raw materials and labor. Optimized components ensure uniform wall thickness and better shrinkage performance, tensile strength and elongation at break. Our products meet diverse pipeline anti-corrosion demands, and our professional after-sales team offers on-site service and online video training to resolve issues promptly.