NEWS

    (Reported by Gao Guojie from Oil&Gas Transmission Technology Institute) Recently, China National Heavy Machinery Research Institute Co., Ltd. (hereinafter referred to as Sino-heavymach) is proud to announce the successful completion of hot trial run for the semi-submerged pipe quenching unit at the first time. This unit is the core part of the heat treatment line of φ630mm extra-large pipe continuous rolling mill supplied as a complete set by Sino-heavymach for Hengyang Valin Steel Tube Co., Ltd. (hereinafter referred to as HYST). Following this milestone, the equipment has officially put into the continuous trial production phase. This equipment stands as the largest in diameter, maximum single piece in weight, and the most advanced steel pipe quenching system technologically currently developed in China. Its successful operation underscores Sino-heavymach’s R&D strengths and manufacturing capabilities in the field of high-end pipe/tube heat treatment facilities.

    The quenching unit boasts exceptional process adaptability, enabling flexible configurations such as external spraying + internal spraying + rotation + semi-submerging as well as external spraying + internal spraying + rotation. This versatility of quenching processes could precisely satisfy the heat treatment requirements for various steel pipe specifications. In particular, the semi-submerged quenching equipment and its integrated process represent a brand-new, independent-developed heat treatment solution, which is specifically innovated by Sino-heavymach to address critical industry pain points, such as the low hardenability and poor microstructural uniformity after quenching typically associated with large-diameter, thick-wall steel pipes. After put into practice successfully, this solution has been rapidly adopted by multiple leading domestic steel pipe enterprises. With over 20 units currently in operation, it has garnered high acclaim and unanimous praise from end-users for its stable technological performance and excellent finished product quality.

    Having been building upon the proven technical advantages of our original equipment, our engineering team has achieved a bold breakthrough through comprehensive upgrades and optimizations to the equipment. By innovative integration of an All-in-one External Spraying & Internal Spraying Water Circulation System, Sino-heavymach has slashed the production energy consumption by more than 20%, which realizes a powerful synergy between high-efficiency production and significant energy conservation. Furthermore, Sino-heavymach has independently developed and integrated a series of core technologies, including Pressure-boosted External Spraying Nozzles, Segmented Precision Flow Control for External Spraying, Pressure-maintaining & Damping Internal Spraying Circuits, and Fully Enclosed External Water Collection Tanks. These innovations greatly enhance the intelligence level,  running stability, and operational reliability, further expanding its application scenarios and bolstering its core competitiveness.

    For years, Sino-heavymach has steadfastly adhered to an innovation-driven development strategy, propelling high-quality growth through technological breakthroughs. It remains deeply committed to the research and development of advanced steel pipe quenching equipment, continuously setting new benchmarks in the industry. The successful deployment of this extra-large diameter semi-submerged quenching unit not only empowers HYST with robust equipment support to enhance product quality, market competitiveness, and economic efficiency, but also further solidifies Sino-heavymach’s leading position in the R&D and manufacturing of domestic steel pipe quenching systems. It injects fresh momentum into the industry’s technological upgrading and high-quality industrial development.