This document specifies the terms and definitions, types, models and basic parameters, basic requirements, technical requirements, test methods, inspection rules, marking, packaging, transportation and storage and quality commitments of solid-liquid two-phase flow hydraulic diaphragm pumps. This document is suitable for flat diaphragms conveying solid-liquid two-phase flow media with a temperature of -30°C to 150°C, a viscosity of 0.3 mm2/s to 2000 mm2/s, a particle size of ≤10 mm, and a mass ratio of dry solid content of ≤87%. Hydraulic diaphragm pumps with cylindrical diaphragms (hereinafter referred to as "pumps").