Outer Diameter Range: Common outer diameter specifications range from 20mm to 200mm, depending on the application and piping system requirements. For example, water supply systems commonly use small-diameter reducers (20mm-63mm), while drainage systems may use large-diameter reducers (110mm-200mm).
Wall Thickness: Wall thickness directly affects the pressure-bearing capacity of the fitting, typically between 2mm and 5mm. High-pressure systems (e.g., 1.6MPa working pressure) require thicker walls (e.g., 3mm or more), while low-pressure systems (e.g., 0.6MPa) can use thinner walls (around 2mm).
Material: High-density polyethylene (HDPE) is the most common material, characterized by corrosion resistance, lightweight, and ease of installation. Other materials include PVC, PPR, and metals (e.g., stainless steel), suitable for different temperature and chemical environments.
Structural Forms: Available in solid-wall straight pipes and coiled pipes. Solid-wall straight pipes are suitable for fixed installations, while coiled pipes facilitate transportation and flexible on-site layout.
Temperature Range: PE reducing fittings are generally suitable for environments ranging from -20℃ to 60℃, but the long-term operating temperature is recommended not to exceed 40℃ to avoid material aging.
Connection Methods: These include heat fusion, electrofusion, and mechanical connection. Heat fusion is suitable for PE pipes and requires control of the heating temperature (200℃-220℃) and welding time (20-30 seconds).
Industry Standards: Must comply with GB/T 13663 (PE Pipes for Water Supply) or ISO 4427 standards to ensure sealing and durability.
