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Grouting pipe

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Casing pipe is a high-strength pipe used in geotechnical engineering, primarily for constructing pile foundations, reinforcing tunnels, stabilizing slopes, and similar applications. The primary material is R780 alloy steel, which boasts outstanding mechanical properties: a tensile strength of 880–902 MPa and a yield strength of 631–658 MPa, enabling it to withstand heavy loads under challenging geological conditions.

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Grouting pipe

High-quality hot-rolled 16-inch casing pipe for subway construction

A geological casing pipe is a specialized pipe used in geological drilling and tunnel support. Its primary functions are to protect borehole walls, provide isolation and guide the drill bit, prevent wall collapse, isolate different strata, and serve as a conduit for drilling operations. The materials used in its manufacture include steel grades such as DZ40, DZ50, DZ60, and the R780 series, and it complies with national standards like GB/T 14975-2012. Depending on their application, geological casing pipes are classified into drill pipes, drill strings, casing pipes, and other categories; they are suitable for oil well drilling, tunnel support, and various other applications. A wide range of sizes and price points are available, including thick-walled API 5CT N80 L80 oil casing pipes, seamless K55/J55 oil casing pipes, and more.

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Gas drainage pipes are specialized pipelines used in coal mines to extract gas from coal seams, rock formations, and mined-out areas. They convey combustible gas to the surface or to safe zones by creating a vacuum, thereby preventing gas accumulation and explosions. Their primary function is to ensure mine safety; at the same time, the extracted gas can be utilized as a resource—for example, for electricity generation or for domestic gas supply.

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Grouting pipe