On March 13, 2025, Kanghong Petroleum Pipe officially put into operation its newly invested fin tube production line, capable of producing L, LL, KL, DR, and G-type fin tubes. Leveraging the company's full industrial chain advantages, Kanghong is committed to building a "one-stop rapid response" service system. The production line can provide customized designs based on customer requirements, including fin height, spacing, material, and heat exchange area. Benefiting from the upstream base tube production capacity, Kanghong can deliver samples within 48 hours and provide batch shipments within 15 days. Additionally, the company offers full lifecycle technical support and after-sales maintenance for fin tubes. The first batch of products will be applied to the waste heat recovery systems of offshore platforms.

In October 2023, Kanghong launched its cold-drawn square and rectangular tube production line, followed by the commissioning of its stainless steel production line in March 2024. In July 2024, the company completed its U-tube production line. With the addition of the fin tube production line, Kanghong has further expanded the depth of its full industrial chain, achieving a leap in development from carbon steel and alloy seamless tubes to stainless steel seamless tubes. Meanwhile, its steel pipe deep-processing capabilities now cover a wide range of products, including U-tubes, serpentine tubes, fin tubes, corrugated tubes, converging-diverging tubes, and square/rectangular tubes.