Energy-saving Vacuum Calibration Insulation Pipe Production Machinery

Huashida’s high-efficiency extrusion line manufactures black HDPE outer jackets for PU foam pre-insulated pipes. It features fast production speed, low energy consumption, compact layout and simple operation, equipped with an automatic control system for stable and long-term operation.

• 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 forms uniform and smooth pipe walls to reduce raw material consumption and supports adjustable wall thickness.
• The pipe is fully formed in one pass without edge trimming.
• Highly automated, the line can be run by one operator to lower 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 stable 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 newly extruded pipe tightly against the sizing copper sleeve to fix its outer diameter. Spray nozzles discharge cooling water in all directions for rapid pipe surface cooling.

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 frequency conversion control to adapt to various extrusion speeds. Equipped with an automatic length meter, 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 comes with a stainless steel tabletop and uses pneumatic turnover for automatic discharging.

Founded in 2003, Qingdao Huashida Machinery Co., Ltd. focuses on R&D and manufacturing of pipeline anti-corrosion equipment and supporting raw materials. As a leading domestic manufacturer of heat-shrinkable sleeves and matching machinery, Huashida wins wide recognition from customers worldwide. 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. With continuous optimization based on practical production experience, Huashida’s heat-shrinkable sleeve equipment has been upgraded to the fourth generation. The complete production line boasts a tidy layout, intelligent operation and high efficiency, cutting energy, raw material and labor consumption. Optimized components deliver uniform wall thickness and improved shrinkage performance, tensile strength and elongation at break. Our products satisfy diverse pipeline anti-corrosion requirements, and our professional after-sales team provides on-site service and online video training for timely problem solving.