It is reported that the titanium welded pipe forming deformation rebound compensation technology developed by Hunan Investment Jintian can meet the technical requirements of titanium welded pipe for PTA plant. The high efficiency heat exchange titanium welded tube developed for the first time can realize the special-shaped strengthening and multi-dimensional structural strengthening of titanium heat exchange tube. Through chemical composition, metallographic structure, mechanical property, process performance test, size and precision inspection and nondestructive testing, all indexes of the product can meet the requirements of the titanium tube standard for PTA and the ASTMB338 standard, and can replace the seamless titanium tube for PTA heat exchange. In the previous appraisal of technical achievements organized by the Ministry of Science and Technology Development of China Textile Industry Federation, the expert group agreed that its achievements were innovative, had independent intellectual property rights, reached the international advanced level, broke the long-term dependence on imports of titanium welded pipes in China, and realized the autonomy of the whole industrial chain of low hydrogen and low iron titanium products. If we look at the performance-price ratio, at present, while the product quality remains stable, the price of Xiangtou Jintian Titanium Welded Pipe is 20% -30% lower than that of Japanese enterprises. This will reduce the investment cost for domestic PTA production enterprises using seamed titanium tubes. On this basis, enterprises may also need to use another way of thinking to consider the investment output ratio. Zhou Hui explained: As a strategic material, the greatest advantage of titanium material is that it can realize the concept of the whole life cycle of products. For example, when it is used in marine engineering, it will not rust even after ten thousand years, which is why titanium alloys are used in marine competitions between countries. PTA belongs to the field of civil industry, some enterprises may feel that titanium welded pipe is more expensive, but once used, they feel very good. In our research, we met an enterprise that used titanium alloy in a set of devices in 1994, and there has been no problem in operation so far. Therefore, the accounts of enterprises using titanium welded pipes should be calculated according to the whole life cycle, not just in front of them. In addition, the use of welded titanium pipes in PTA plants will further improve the quality of PTA products. The complex production process from PX to PTA is accompanied by a large number of high-temperature reactions, especially in the condenser to complete a large number of heat exchanges. The use of welded titanium tubes can reduce the wall thickness of the condenser, accelerate the heat dissipation of the condenser, and thus improve the exchange efficiency. According to reports, the wall thickness of the seamed titanium pipe produced by Xiangtou Jintian is getting thinner and thinner, which is only 0.2 mm at present. PTA is one of the important application markets of titanium tube in civil field. With the continuous upgrading of materials,titanium round bar, there is still much to be done in the refinement of PTA plants in China. We hope to expand the use of titanium tubes in PTA plants, but also to improve the profit margin of PTA enterprises. We are confident that together with PTA enterprises and related equipment enterprises, we will do a better job in the refinement of PTA plants and production in China and further promote the high-quality development of PTA industry. Zhou Hui is confident about the application and expansion of seamed titanium tubes in PTA plants. Return to Sohu to see more Responsible Editor:. yunchtitanium.com