This product is a heavy-duty threaded temporary drilling casing pipe, designed for use in foundation drilling, bored piling, rotary drilling and other borehole construction applications. Its main function is to support and stabilize the borehole wall during drilling, prevent collapse of loose soil or unstable formations, and help control or isolate drilling mud, slurry, groundwater and surrounding soil.

Each casing section is manufactured with heavy-duty threaded connections, allowing several pipe sections to be connected together quickly to reach the required drilling depth. Compared with ordinary welded or bolted connections, the threaded design provides convenient assembly and disassembly and is suitable for repeated use on construction sites.

The casing is normally installed temporarily during drilling and can be removed and reused after the borehole, pile or foundation work is completed. It can be supplied in different diameters, wall thicknesses, section lengths and connection designs according to the drilling equipment and specific project requirements.