Jinao has a comprehensive R&D and testing system, supported by a technical team specializing in materials, heat treatment, piercing, cold drawing, and cold rolling. We are committed to continuously optimizing product structures and process. To enhance capabilities in defect prevention, analysis, and rectification, the company has established joint R&D bases with universities and research institutes focusing on material performance, heat treatment optimization, and rolling process development. Currently, 17 industry experts and professors are involved in research on failure analysis, heat treatment enhancement, and hot rolling parameter optimization, further strengthening Jinao’s innovation in high-performance seamless steel tubes.

To enhance product quality and inspection efficiency, Jinao established an AI Automation Laboratory dedicated to the developing intelligent inspection technologies for steel tubes. After years of focused R&D, we have achieved major breakthroughs in automated dimensional measurement, intelligent surface inspection, and defect recognition. These advances have significantly enhanced the accuracy and responsiveness of our inspection systems. Looking ahead, with continuous technological upgrades and system optimization, Jinao is building a fully intelligent and digitalized quality control systems, striving to deliver “zero-defect” steel tube products to our customers.

During the production of seamless steel tubes, defects on the inner and outer surfaces of the pierced billet are a critical factor affecting product quality consistency. To address this, Jinao assembled a dedicated technical team to conduct in-depth research and implement systematic improvements focused on fine-tuning the piercing process. These actions have effectively reduced surface defects at the source, significantly lowering their frequency and improving both product quality and yield. This advancement has enhanced process stability and further strengthened Jinao’s competitiveness in the automotive seamless tube market.

In seamless steel tube manufacturing, wall thickness deviation of pierced billets is one of the key factors affecting product quality and dimensional consistency. To tackle this challenge, Jinao Seiki launched targeted technical improvementinitiatives, focusing on precise adjustments to the piercing process—particularly through optimizing roller parameters and fine-tuning the centering of guide devices. These continuous improvements have effectively reduced wall thickness deviation, significantly enhancing dimensional precision and product consistency.