PU Foam Anti-corrosion Pre-insulated Pipe Extrusion Line

Huashida high-efficiency extrusion line is designed for producing black HDPE outer jackets of PU foam pre-insulated pipes. Featuring a compact layout and user-friendly operation, it achieves high production speed with low energy consumption. Equipped with an automatic control system, the line guarantees stable and continuous 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 increases production capacity while keeping stable operation.
• It delivers uniform and smooth pipe walls to cut raw material consumption and allows adjustable wall thickness.
• The pipe realizes complete one-pass forming without edge trimming.
• Featuring a high level of automation, this production line needs only one operator to help reduce labor costs.

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

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

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

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

It comes with a stainless steel tabletop and adopts pneumatic turnover for 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 corresponding 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.

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

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