Technical Specifications:
The document provides detailed specifications for monolayer PE-X pipes, available in various sizes and configurations. The codes 2115, 2255, 2116, and 2266 represent different product lines with specific dimensions and features.

Physical Properties:
The PE-X pipes have a specific heat of 1.92 KJ/Kg⋅K, thermal conductivity of 0.38 W/(m⋅K), a coefficient of linear expansion of 1.9x10^-4 K^-1, and a degree of cross-linking greater than 65%.

Technical Features:
Uniterm crosslinked polyethylene pipes (PE-Xb) are noted for their high resistance to acids and bases, poor electrical conductivity, high abrasion resistance, and smooth internal surfaces that reduce blockages. They are acoustically insulated, suitable for drinking water, flexible, lightweight, and can be cold-bent easily.

Standards and Applications:
The pipes comply with NF EN ISO 15875 and NF 545 standards. They are suitable for various applications, including hot and cold drinking water supply (Class 2), underfloor heating and low-temperature radiators (Class 4), high-temperature radiators (Class 5), and chilled water systems, all with specified pressure ratings.

Product Variants:
The document lists multiple product codes with corresponding dimensions and features, indicating the availability of different sizes and configurations for specific applications.