For new entrants launching a plastic pipe manufacturing startup, balancing initial investment cost, stable high output, low operation expenses and all-round after-sales service is the top priority. PVC, UPVC and CPVC pipes dominate construction water supply, drainage, municipal engineering and cable protection markets thanks to corrosion resistance, low raw material cost and easy installation. Choosing a mismatched extrusion line will lead to low yield, high power consumption, frequent breakdowns and slow capital payback.