T/ZFHB 03-2023 Polytetrafluoroethylene (PTFE) tower packing

Scope

Scope: This document specifies the product classification, requirements, test methods, inspection rules, factory documents, and packaging, transportation, and storage of polytetrafluoroethylene (PTFE) tower packing (hereinafter referred to as "tower packing"). The document applies to tower packing used in petroleum and chemical industries and other industries, which is made from polytetrafluoroethylene resin, recycled polytetrafluoroethylene, or clean recycled materials as a single raw material or in a compound form, and is processed and molded into tower packing products. Main technical contents: Product classification: Tower packing is divided into types such as Baur ring (or Raschig ring), stepped ring, and square saddle ring. The characteristic parameters of various types and sizes of tower packing are shown in Appendices A, B, and C. Technical requirements: 1. Appearance quality: The appearance of tower packing should be neat and clean. The surface color should be uniform, and there should be no defects such as cracks, bubbles, flying edges, or burrs. 2. Dimensions: The dimensions of tower packing should comply with the provisions of Appendices A, B, and C. 3. Physical properties: The density and heat deflection temperature of tower packing should meet the requirements of Table 1. Density: 2.13–2.20 g/cm3 Compressive strength: The compressive strength of ring and saddle-shaped tower packing (N/m2) should be ≥15 Heat deflection temperature (°C)

Development Information

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