HAIDI QK1335 Heavy Duty CNC Pipe Threading Lathe for Oil and Gas Industry - 355mm Large Spindle Bore Precision

The HAIDI QK1335 CNC Pipe Threading Lathe is engineered specifically for the demanding requirements of the global energy sector. Featuring a massive 355mm spindle bore and a high-torque drive system, it provides a robust solution for processing API-standard threads on heavy-duty oil country tubular goods.

Precision threading on large-diameter pipes requires a machine tool that prioritizes both static and dynamic rigidity. The HAIDI QK1335 is built on a heavy-duty bed utilizing premium Meehanite cast iron, which undergoes extensive aging to eliminate internal stresses. This foundation is critical for absorbing the high-frequency vibrations generated during the threading of high-strength alloy steel pipes. The machine features a dual-chuck system (front and rear) to ensure absolute stability and concentricity of the workpiece throughout the entire machining cycle.

The core of the QK1335’s performance lies in its specialized spindle assembly. With a 355mm through-hole, it allows for the passage of large drill pipes and casing. The spindle is supported by high-precision NSK bearings and driven by a high-torque motor via a heavy-duty gearbox. This configuration provides the necessary power for both high-speed finishing of delicate threads and low-speed heavy-duty roughing. Furthermore, the bed ways are induction hardened to HRC 50+ and precision ground, then hand-scraped to ensure a micron-level surface finish and long-term wear resistance.

For the Russian and CIS markets, the QK1335 is equipped with a robust CNC control system capable of handling complex API thread profiles with ease. The integration of automatic lubrication and a high-pressure cooling system ensures consistent performance in continuous production environments. By combining massive scale with precision engineering, the QK1335 remains the strategic choice for manufacturers dedicated to high-quality oil and gas infrastructure.

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