The large-diameter PE pipe equipment usually integrates a large-sized single-screw extruder (such as SJ90/33 to SJZ150/33), spiral/basket die head, vacuum sizing and cooling system, traction and cutting device, and PLC fully automatic control. It is suitable for HDPE (such as PE80/PE100) raw materials and supports continuous and stable production. The pipes have a lifespan of over 50 years, are flexible and impact-resistant, have a smooth inner wall (Manning coefficient ≈ 0.009), and have reliable hot-melt/electro-melt connections.