110mm Class 12 solid socket‑end uPVC borehole casings, Class 12 is recommended when Borehole depth exceeds 100 m (heavy-duty rating)
- Class 12 indicates a heavy‑duty casing suitable for deeper boreholes (typically 100–200 m) because of its higher collapse resistance
- Socket end refers to a female end designed for solvent welding or push‑fit joining, common in PVC casing systems
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Ground conditions exert high collapse pressure (e.g., unstable formations).


