Standard operating conditions: High-quality, properly maintained standard grooved pipe fittings typically last 20–30 years and do not require premature replacement.
Special materials: Grooved pipe fittings made of HDPE are resistant to acids, alkalis, and corrosion; they have a service life of over **50 years** and generally do not require replacement throughout their entire lifecycle.
Situations requiring early replacement: Immediate replacement is necessary-regardless of age-if issues such as severe corrosion, seal aging or leakage, or structural deformation occur.