In the plastic pipe extrusion industry, most customers focus mainly on the extruder, the screw, and the die. These parts are important, but the real stability of a pipe production line depends heavily on the cooling section. More and more overseas buyers are starting to realize that the quality of the water tank is just as important as the quality of the extruder and the mould. A good cooling system helps control pipe shape, surface finish, and long-term production stability.
Recently, we welcomed several customers from the Middle East and Africa. At first, they only paid attention to extruder configurations, screw materials, and mould steel grades. After studying the full production line, they quickly understood how important the vacuum and cooling water tanks are. The reason is simple: even the best extruder needs a stable, efficient cooling system to “lock in” the quality of the pipe.
To ensure long and stable production, all our vacuum sizing tanks and spraying cooling water tanks are made from 304 stainless steel. This material is highly resistant to corrosion, stays strong even with changing water quality, and keeps its shape without rusting or deforming. It performs very well in hot, dusty, and hard-water environments, which many overseas customers face every day.
The spraying system inside the water tank is just as important. We use high-quality spray nozzles that create an even water distribution. This allows the water to fully cover the pipe surface during cooling, making the cooling process faster and more uniform. As a result, the pipe becomes more round, the surface becomes smoother, and the final product meets higher standards—especially for high-grade water pipe production.
The vacuum pump is another key part of the cooling section. We use stable and durable vacuum pumps that provide strong suction and keep the vacuum level steady. With a stable vacuum, the pipe forms quickly and correctly inside the sizing sleeve, avoiding collapse, swelling, or size deviations. Customers can usually see the difference clearly during testing: when the vacuum is stable, the pipe is stable.
When customers choose a pipe production line, looking beyond the extruder and checking the whole system shows a higher level of professionalism. A line where every section is designed with care will always have better output, lower energy use, and stronger long-term stability.
The more carefully you evaluate a production line, the safer your investment becomes. There are still many ways to further improve cooling performance—such as better water quality control, optimized spray angles, and regular vacuum pump maintenance—which can help the whole line reach its full potential.
