Mechanical Properties

Pressure Resistance: Generally speaking, the thicker the wall of a PFA tube, the stronger its pressure resistance. A thicker wall can withstand higher internal pressures without cracking or deforming. For example, in high-pressure fluid delivery systems—such as the transportation of high-pressure chemical reagents in chemical production—thick-walled PFA tubes are required to ensure the safe operation of the system. In contrast, thin-walled PFA tubes have relatively lower pressure-bearing capacity and are suitable for low-pressure environments.

Flexibility: Wall thickness affects the flexibility of PFA tubes. Thin-walled PFA tubes typically exhibit better flexibility, making them easier to bend and install. This allows them to adapt to complex pipeline layout requirements and reduces the difficulty and workload during installation. Thick-walled PFA tubes, on the other hand, are relatively stiffer, with poorer flexibility. They require greater external force to bend and may face certain limitations, making them less suitable for installation scenarios that demand frequent bending or limited space.

Impact Resistance: Thick-walled PFA tubes can better absorb and disperse impact energy when subjected to external impacts, thereby reducing the likelihood of damage to the tube material and offering superior impact resistance. Thin-walled PFA tubes are relatively more fragile and are more prone to cracking or damage when exposed to significant impact forces.

Chemical Properties

Corrosion Resistance: PFA tubes inherently possess excellent chemical stability and can resist corrosion from most chemical substances. To a certain extent, thicker walls provide more durable corrosion protection. Even if the outer surface of the tube sustains minor damage, the additional thickness of a thick-walled tube prevents chemical substances from further penetrating and corroding the interior, thereby extending the tube's service life.

Chemical Stability: Thick-walled tubes can better maintain their chemical stability and physical properties during prolonged exposure to chemical media. With a greater material barrier, thick-walled tubes experience less influence from chemical media on their internal structure, reducing the risk of performance degradation caused by long-term contact with chemicals.