Heat-treated large-diameter thick-walled coiled tubing successfully delivered, breaking manufacturing limits and empowering oil and gas extraction.

Recently, Shinda Creative, a subsidiary of Huatong Group, successfully delivered 2900 meters of large-diameter, thick-walled, quenched and tempered coiled tubing with a diameter of 88.9×5.2mm (φ3.5″×0.204″). This marks a key technological breakthrough for the company in the manufacturing of high-end oil and gas extraction equipment, injecting new momentum into the efficient development of domestic oil and gas fields and ensuring energy security.

Quenched and tempered coiled tubing is a high-strength, high-toughness, and more uniformly structured high-end coiled tubing product. Its fatigue life can reach more than 1.5 times that of conventional coiled tubing. Through specialized heat treatment research, performance bottlenecks have been overcome, resulting in ultra-long and durable tubing suitable for demanding conditions in deep wells, ultra-deep wells, and horizontal wells with extended reach in oil and gas fields, thus reducing costs and improving efficiency in oil and gas extraction.



---Targeting Industry Pain Points and Breaking Through Core Manufacturing Bottlenecks
As domestic oil and gas exploration continues to extend into ultra-deep, deep-water, and high-pressure complex conditions, the successfully rolled-out quenched and tempered large-diameter thick-walled coiled tubing achieves a perfect balance between high strength and high toughness through a fully independently developed quenched and tempered heat treatment process. The product completely overcomes the technical contradiction of traditional coiled tubing where "larger diameter results in insufficient strength, while increased wall thickness leads to decreased flexibility," truly achieving high performance uniformity in large sizes.

---Breaking Manufacturing Limits and Maintaining Product Quality Stability
In the field of coiled tubing manufacturing, the combined effect of large diameter, thick wall, and high steel grade tests not only the capabilities of a single process, but also the overall precision of the entire production line, from raw material pretreatment, continuous forming, online weld monitoring to tempering heat treatment. This is never a simple upgrade of product specifications, but a systematic test of the entire manufacturing system's capabilities, from equipment load and process control to closed-loop management throughout the entire process. The successful production of this tempered large-diameter, thick-walled coiled tubing represents a further upgrade of the production equipment's load capacity and a further refinement of the technology across the entire production chain.

---Anchoring Energy Security & Supporting Industrial Upgrading
Currently, China's oil and gas industry is at a critical stage of "increasing reserves and production, upgrading through digitalization and intelligence, and green transformation." The demand for high-end downhole equipment continues to rise in incremental areas such as shale gas, deep oil and gas, and offshore oil and gas. In the future, we will continue to focus on high-end materials and advanced forming processes, promoting the implementation of more high-performance, customized pipe products. Through technological breakthroughs in manufacturing, we will comprehensively support the upgrading of China's oil and gas industry towards higher efficiency, lower costs, and greater safety and environmental protection, building a solid equipment foundation for national energy security.