Reference prices by category:
Basic/Economy models: Mining-grade and seismic grooved couplings range from 0.5 to 10 yuan; suitable for standard, low-pressure applications.
Standard mainstream models: Hot-dip galvanized and ductile iron fire-protection grooved couplings; priced between approximately 13.5 and 38 yuan; the most commonly used types in construction projects.
Stainless steel/Large-size models: Stainless steel grooved couplings (DN150 and above) generally range from 47 to 478 yuan; suitable for specialized applications requiring high-pressure resistance or corrosion resistance.