人民财讯7月31日电，关于"盾构机的刀具产品，以碳化钨材料为例，使用多长时间需要更换一次"的问 题，宏润建设（002062）7月31日在互动平台表示，碳化钨材料做的刀具一般用于软土盾构，或者硬岩 盾构的刮刀，施工过程中一般不用更换，项目结束后盾构回厂维修时根据磨损损坏情况进行更换。盾构 施工过程中日常说的换刀是指滚刀，岩石较硬的情况下滚刀更换频率较高，但是滚刀一般不用碳化钨材 料做，仅只有少量镶齿滚刀的齿可能会用少量碳化钨。 ...

Group 1 - The launch of the 1.2 trillion yuan Yarlung Tsangpo River hydropower project has ignited the capital market, with 24 concept stocks hitting the daily limit and over 70 stocks experiencing a surge in three days [1][3] - The project involves complex engineering challenges, including the construction of a 50-kilometer water diversion tunnel through the Himalayas, requiring at least 100 high-altitude customized tunnel boring machines (TBMs) and generating an estimated 25 billion yuan in equipment orders [3][4] - The capital influx into the infrastructure sector has exceeded 10 billion yuan in a single day, impacting other sectors such as pharmaceuticals [1][3] Group 2 - Key players in the tunneling equipment industry include companies like China Railway Construction Corporation, which has a significant market share in high-altitude TBMs, and other firms like Hengtong Drilling Tools and Tibet Tianlu, which dominate cement and explosive supplies in the region [4][5] - The project is expected to have a 12-year construction cycle, with orders being released in three phases: immediate focus on civil explosives and cement, mid-term on equipment delivery (2027-2030), and long-term on power generation operations (2030+) [3][4] - The Yarlung Tsangpo project is anticipated to contribute significantly to carbon reduction, with the potential to decrease carbon emissions by 300 million tons annually, showcasing its long-term environmental benefits [4]