When choosing a suitable type of agricultural plastic water pipe for your irrigation system, consider the following factors: 1) Material: Look for pipes made from durable materials like PVC or PE, which are resistant to chemicals and UV rays. 2) Diameter: Select a pipe diameter that matches your water flow requirements. Larger pipes are suitable for higher flow rates. 3) Pressure Rating: Ensure the pipe can withstand the pressure of your water source. 4) Flexibility: Flexible pipes can be easier to install and navigate around obstacles. 5) Cost: Compare prices and lifespan to find a cost-effective option. 6) Local Conditions: Consider the climate and soil conditions, as some materials may degrade faster in certain environments. Always consult with a local irrigation specialist or supplier for recommendations tailored to your specific needs.