High Efficiency Vacuum Sizing Insulation Pipe Extrusion Production Line

Huashida’s high-efficiency extrusion line makes black HDPE outer jackets for PU foam pre-insulated pipes. It has fast speed, low energy use, compact layout and easy operation, with an automatic control system for stable, long-term running.

• 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 delivers higher output with stable operation.
• It produces uniform, smooth pipe walls to cut raw material consumption and allows adjustable pipe thickness.
• The pipe is fully formed in one pass with no edge trimming required.
• Highly automated, the line can be run by one operator to lower labor costs.

The single screw is fitted with a barrier mixing head and matched with a newly designed slotted barrel. This setup ensures good plasticization, high throughput and stable performance.

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

The haul-off machine includes a drive unit, hauling tracks, clamping mechanism, adjustment system, side plates and base frame. Its tracks are powered by AC motors with frequency conversion control to match different extrusion speeds. Fitted with an automatic length meter, it supports cutting to preset lengths.

This cutter uses blade punching for dust-free cutting. It comprises a cutting assembly, clamping assembly, synchronous motion mechanism and frame.

It is fitted with 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 supporting machinery, the Huashida brand enjoys wide recognition from customers at home and abroad. Many of our equipment designs are patent-protected. 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. Based on continuous optimization from real production experience, Huashida’s heat-shrinkable sleeve equipment has reached the fourth generation. The full line features neat layout, intelligent operation and high efficiency, saving energy, raw materials and labor. Upgraded components ensure uniform wall thickness and better shrinkage, tensile strength and elongation at break. Our products meet various pipeline anti-corrosion demands, and our professional after-sales team supplies on-site service and online video training for timely troubleshooting.