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2025.10.03
Industry News
In the magnificent modern energy industry picture, oil and natural gas, as bloodlines, are crucial to its safe and efficient transportation. The key components connecting Qianli Oil Dragon and creating the energy artery are all kinds of oil pipe fittings that seem bulky but actually contain the universe. Their processing quality is directly related to the safety and efficiency of the entire energy system. Faced with the ultimate pursuit of "big, fine and strong" in this field, the large-aperture CNC lathe produced by Hongjia came into being. With its excellent performance and reliable stability, it has become a well-deserved "Ace Equipment" in the field of petroleum pipe fitting processing.
Content
Oil pipe fittings, including drill pipe joints, casings, oil pipe short sections, flanges, four-way, three-way, etc., are not easy to process and mainly face the following challenges:
Huge apertures: The diameters involved often range from tens of millimeters to more than one meter, which requires the machine tool to have super large passability.
Tough material: High-strength alloy steel, stainless steel and special steel are mostly used, with high cutting force and fast tool wear.
Structural complexity: Not only do high-precision internal and external threads (such as API standard threads), but also involve complex cavity, channel and sealing surfaces.
Harsh working conditions: Pipe fittings need to withstand high pressure, high temperature, high corrosion and huge stretching and torsional loads, which require extremely high requirements for the geometric accuracy, shape and position tolerance and surface finish of the parts.
Traditional processing methods are inefficient and poor consistency, making it difficult to meet the dual requirements of modern petroleum industry for mass production and quality stability.

The large-aperture CNC lathe produced by Hongjia is tailor-made to overcome the above problems. Its core advantages are reflected in:
Large bore diameter: The bed is made of high-strength cast iron, optimized by finite element analysis and built-in ultra-large diameter hollow spindle (through hole diameter can reach Φ320mm or even larger), ensuring that large pipes and rods can easily pass through, and achieving the clamping of long pipe fittings at one time is completed at both ends.
Extreme rigidity: The wide-body bed base, thick roller guide rail and super-large-sized lead screw form an extremely stable processing platform, which can effectively suppress vibration even under heavy cutting conditions, ensuring processing accuracy and surface quality.
High-performance CNC system: equipped with international mainstream CNC systems (such as Siemens and Fanuc), with advanced surface processing, intelligent error compensation and other functions.
Precise synchronous control: The spindle, Z-axis and X-axis are driven by precision servo, which can achieve perfect turning of high-difficulty threads such as API standard tapered threads and trapezoidal threads. The thread accuracy and sealing are far beyond the standard.
Large torque electric spindle: provides abundant and constant cutting torque, easily cope with the "hard-and-hard" processing of high-strength steel.
High-pressure and high-flow cooling: For the continuous long chips generated during the processing of petroleum pipe fittings, a high-pressure cooling system is equipped to effectively cut chips and eliminate chips, and quickly take away cutting heat, extend tool life, and ensure processing continuity.
Modular design: It can easily integrate automatic loading and unloading robots, bar feeding machines, tool setters, etc. to form a flexible manufacturing unit (FMC), achieving 24-hour uninterrupted production and greatly increasing production capacity.
Data acquisition and monitoring: Supports remote monitoring of machine tool status, processing data acquisition and analysis, and provides data support for lean production and predictive maintenance.
Hongjia large-aperture CNC lathes performed outstandingly in oil pipe fitting processing:
Drill pipe joint processing: Complete all finishing of outer circle, end face, thread (including boring and internal thread) at one time to ensure the strength and sealing of thread connections, and meet the API Spec 7-1 standard.
Oil casing processing: efficiently turn the outer circle and chamfer of the pipe, and precision-process its unique trapezoidal thread (BTC) or special thread (Premium Thread), the thread quality is stable and reliable.
Valve body and four-way/three-way processing: High-precision boring and turning of complex cross-hole systems ensures smooth transitions of each runner and flatness of the sealing surface, and withstands the extreme pressure of the wellhead device.
Flange processing: Quickly complete the precision processing of the end face, stop, bolt hole boss and sealing waterline of large diameter flange.
Quality improvement: The processing accuracy can reach micron level, the product consistency is extremely high, which greatly reduces the scrap rate and enhances the market competitiveness and brand reputation of customer products.
Efficiency enhancement: The powerful cutting capability and automation integration significantly shortens the processing time of a single piece and increases production efficiency by more than 30%.
Cost reduction: The high stability brought by the high rigidity of the machine tool reduces abnormal tool losses; automated production reduces dependence on skilled operators, and the cost of comprehensive labor and consumables has dropped significantly.
Flexible: The powerful CNC function enables machine tools to quickly adapt to order needs of different specifications and batches, helping enterprises seize the initiative in the changing market.
With the increasing demand for energy and the increasingly complex mining environment, unprecedented high standards are set for the manufacturing of core components of petroleum equipment. The large-aperture CNC lathe produced by Hongjia is deeply involved in and promoting the innovation of oil pipe fitting processing technology with its strong body, precise core and intelligent mind. It is not only a piece of equipment in the workshop, but also a national important tool to ensure national energy strategic security, help equipment manufacturing enterprises move towards high-end, and achieve high-quality development. Choosing Hongjia means choosing a commitment to quality, a pursuit of efficiency, and a competitiveness for the future.
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