The market share of high temperature and high pressure pipe fittings is on the rise

At present, the outline of China's Electric Power Engineering and Technology Development Plan is listed as a priority subject in important fields. How to realize the localization of major technical equipment for ultra-supercritical units has been put on the agenda.

According to reports, Bohai Heavy Industry has invested more than 8 million yuan in more than two years and conducted systematic and in-depth research on P92 steel pipe parts for ultra-supercritical units. At present, Bohai Heavy Industry has fully mastered the core technology of designing, manufacturing, testing and stress state of P92 steel pipe parts. It has adopted an imported P92 grade steel material, relying on independent innovation to realize the localization of ultra-supercritical unit P92 steel pipe parts. path of.

It is reported that over the years, high-temperature and high-pressure pipe fittings products from Bohai Heavy Industry have seen an increasing trend in the market share of high-temperature and high-pressure pipe fittings used in thermal power plants in China. The independent research and development capabilities and processing and manufacturing levels have reached the international advanced level.

Recently, Hebei Province Bohai Heavy Industry Pipeline Co., Ltd. (hereinafter referred to as “Bohai Heavy Industry”) and Northeast Electric Power Design Institute jointly developed a P92 steel pipe of a million kilowatt ultra supercritical power station unit, which passed through the China Power Corporation organized by the Power Planning and Design Institute. Identification of experts, such as the Federation, China Electric Power Equipment Co., Ltd., China Huadian Engineering (Group) Co., Ltd., and East China Electric Power Design Institute. Experts believe that the product has reached the domestic advanced level, will be promoted in the application of millions of kilowatts of ultra-supercritical units, is of great significance to promote the localization of P92 steel pipe parts.

The expert group heard a report on the development of P92 steel pipe parts by the leadership of Bohai Heavy Industry, inspected the production equipment and process flow, and tested the assessment pipe fittings. A document review team and product test group composed of technical review committees, and a new hot extrusion equal-diameter tee for the main steam pipeline of a million kilowatt ultra supercritical power station newly developed by Bohai Heavy Industry Co., Ltd. for high-temperature reheat steam pipes. Hot-pressed elbows and intermediate frequency heating elbows for main steam lines were technically reviewed. The review results show that all performance indicators have reached the domestic advanced level, product quality and the level of imported pipe fittings, can be mass production, replacing imported products.