3PE Anti-corrosion Vacuum Sizing Insulation Pipe Production Line

Huashida’s high-efficiency extrusion line produces black HDPE outer jackets for PU foam pre-insulated pipes. It offers fast production speed and low energy consumption alongside a compact layout and simple operation. Equipped with an automatic control system, it guarantees 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 raises output while sustaining stable operation.
• It forms uniform, smooth pipe walls to reduce raw material consumption and enables adjustable wall thickness.
• The pipe features full one-pass forming with no edge trimming required.
• Boasting high automation, the line can be operated by a single operator to reduce labor costs.

The single screw is fitted with a barrier mixing head and paired with a newly designed slotted barrel. This structure ensures excellent plasticization, high throughput and stable operation.The single screw is fitted with a barrier mixing head and paired with a newly designed slotted barrel. This structure ensures excellent plasticization, high throughput and stable operation.

The vacuum calibration tank consists of a frame, stainless steel tank body, vacuum unit, spray cooling system and position adjuster. The vacuum pump extracts air from the sealed tank, pressing the freshly extruded pipe tightly against the sizing copper sleeve to fix its outer diameter. Spray nozzles eject cooling water in all directions for rapid cooling of 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 powered by AC motors with variable frequency control to suit 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 comprises a cutting assembly, clamping assembly, synchronous motion mechanism and frame.

It has a stainless steel tabletop and uses pneumatic turnover to realize 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 matching machinery, Huashida has gained widespread recognition from customers worldwide. Several of our equipment designs are patent-protected, and we are certified to ISO 9001, ISO 14001 environmental management and ISO 45001 occupational health and safety standards.

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