Low Power Consumption HDPE Casing Vacuum Forming Extrusion System

Huashida’s high-efficiency extrusion line manufactures black HDPE outer jackets for PU foam pre-insulated pipes. Featuring a compact layout and simple operation, it achieves high production speed with low energy consumption. Equipped with an automatic control system, the line enables stable and continuous 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 production capacity while maintaining stable running.
• It forms uniform and smooth pipe walls to cut raw material consumption and allows adjustable wall thickness.
• The pipe adopts complete one-pass forming without edge trimming.

• With a high degree of automation, this production line only needs one operator, helping reduce labor costs.

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

The vacuum calibration tank is composed of a frame, stainless steel tank body, vacuum unit, spray cooling system and position adjuster. The vacuum unit 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 for quick surface cooling of the pipe.

The haul-off machine comprises a drive unit, hauling tracks, clamping mechanism, adjustment system, side plates and base frame. Its tracks are driven by frequency-regulated AC motors to suit various extrusion speeds. Fitted with an automatic length counter, it supports cutting to preset lengths.

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

It is equipped with a stainless steel tabletop and uses pneumatic turnover to realize automatic discharging.

Founded in 2003, Qingdao Huashida Machinery Co., Ltd. focuses on the R&D and manufacturing of pipeline anti-corrosion equipment and supporting raw materials. As a professional domestic manufacturer of heat-shrinkable sleeves and supporting machinery, Huashida has won wide recognition among global customers. Several of our equipment designs are covered by patents, and we hold ISO 9001, ISO 14001 environmental management and ISO 45001 occupational health and safety certifications.

Up to now, more than 500 production lines have been exported to Russia, Kazakhstan, Belarus, Egypt, Iran, Indonesia and other countries. Continuously optimized according to practical production experience, Huashida’s heat-shrinkable sleeve equipment has been upgraded to the fourth generation. The full production line features a compact layout, intelligent operation and high efficiency, cutting the consumption of energy, raw materials and labor. Optimized components ensure uniform wall thickness, together with enhanced shrinkage property, tensile strength and elongation at break. Our products can satisfy diverse pipeline anti-corrosion demands, and our professional after-sales team provides on-site service and online video training for quick troubleshooting.