Problems to be solved in building large straight seam welded pipe units in China
1.Choose the right process
From the comparison of several large longitudinal welded pipe technology and the analysis of the development of the large longitudinal welded pipe technology in the world, UOE unit is the main dsaw pipe unit in the world that produces high strength pipeline steel pipe. Its production capacity is large, product quality it is good. The world's developed countries have built such a unit. China is a big steel country and a country with a large amount of oil and gas pipelines. It is very necessary to build 1 or 2 UOE units of world advanced level to produce high quality steel pipes for oil and gas pipelines. In addition, 2 to 3 sets of other dsaw pipe units such as C-pressure forming and continuous roll forming (CFE) can also be constructed. Although the output of these welded pipe units is lower, the investment is less, the construction is quick, and the flexibility is good. Good quality, strong ability to adapt to the market. The size of the unit complement each other in order to adapt to the development of China's pipeline industry Pipeline will gradually dsaw pipe based, the current spiral welded pipe market gradually transformed into straight seam welded pipe market. This shows that the construction of large straight seam welded pipe unit will have a very good prospect.
2. To determine a reasonable industrial layout
Large straight seam welded pipe production line layout should consider the distribution of pipelines, the future development plan. At present, large-scale pipeline construction is mainly concentrated in the western and northern regions of our country. At the same time, we should also consider the transportation of raw material steel plates used for large straight seam welded pipes so as to solve the transportation problem of super long and wide steel plates. Therefore, the layout of the production line of large straight seam welded pipe has two options: one is that the site of the large straight seam welded pipe production line is as close as possible to the pipe construction area, which is good for transporting steel pipe to the pipelines under construction because the no-load rate of railway transportation pipe, transportation costs amazing, reducing transportation costs from the steel pipe factory to the pipeline site is an important factor in reducing the cost of the project. The other is a large straight seam welded pipe production line near the site of steel production base or port, so you can solve the long super-wide steel transport problems, ease of transport of steel. China's large straight seam welded pipe production line construction has just started, should be a reasonable layout and planning, so that the basic layout of industrial rational, which is China's large straight seam welded pipe technology and pipeline construction are of great significance.
3. Provide high-quality steel for raw materials
Large straight seam welded pipe unit production of raw materials is mainly produced by plate mill wide steel plate (except for less than 600mm of steel can be produced by hot rolling mill outside the plate), the requirements of the supply of high quality steel. Oil and gas pipelines with high strength, toughness, weldability, H2S corrosion resistance and other aspects of the need for higher performance, the general use of low-carbon micro-alloy controlled rolling plate. Therefore, the requirements of the plate mill with advanced smelting equipment (especially refined Equipment) and a wide plate mill with perfect rolling control performance to produce hot-rolled wide steel plates of grade X60 ~ X75 or above and feed large straight seam welded pipe unit as raw material, so as to produce pipeline steel pipe conforming to API standard to meet the pipeline construction and development needs.
4. Digestion and innovation, to achieve localization of equipment
Construction of large straight seam welded pipe production line should be the principle of advanced technology, good product quality, low investment, good efficiency and strong competitiveness. In other words, it is necessary to adopt the latest technology and equipment in the world to reach the international advanced level to produce high-quality pipelines that meet the API standards. At the same time, it is necessary to reduce the investment and investment costs, enhance the economic benefits and enhance the competitiveness of enterprises. However, Large sets of straight seam welded pipe units, especially UOE unit equipment costs up to more than 100 million US dollars, thus reducing equipment costs is to reduce investment and investment costs. This problem can be used most of the domestic equipment design and manufacture of important equipment using foreign drawings, made in China, or the use of cooperative design, mainly domestic manufacturing, the introduction of a small amount of key equipment or components to achieve large longitudinal seam welded domestic technical assembly, domestic equipment and on this basis, digestion and innovation, in the future of large straight seam welded pipe unit can be based on domestic technology, domestic equipment, only imported single stand-alone in order to make China's large straight seam welded pipe technology to catch up with the international advanced level.
http://www.xysteelpipe.com/info/Problems-to-be-solved-in-building-large-straight-seam-welded-pipe-units-in-China-522-1.htm
From the comparison of several large longitudinal welded pipe technology and the analysis of the development of the large longitudinal welded pipe technology in the world, UOE unit is the main dsaw pipe unit in the world that produces high strength pipeline steel pipe. Its production capacity is large, product quality it is good. The world's developed countries have built such a unit. China is a big steel country and a country with a large amount of oil and gas pipelines. It is very necessary to build 1 or 2 UOE units of world advanced level to produce high quality steel pipes for oil and gas pipelines. In addition, 2 to 3 sets of other dsaw pipe units such as C-pressure forming and continuous roll forming (CFE) can also be constructed. Although the output of these welded pipe units is lower, the investment is less, the construction is quick, and the flexibility is good. Good quality, strong ability to adapt to the market. The size of the unit complement each other in order to adapt to the development of China's pipeline industry Pipeline will gradually dsaw pipe based, the current spiral welded pipe market gradually transformed into straight seam welded pipe market. This shows that the construction of large straight seam welded pipe unit will have a very good prospect.
2. To determine a reasonable industrial layout
Large straight seam welded pipe production line layout should consider the distribution of pipelines, the future development plan. At present, large-scale pipeline construction is mainly concentrated in the western and northern regions of our country. At the same time, we should also consider the transportation of raw material steel plates used for large straight seam welded pipes so as to solve the transportation problem of super long and wide steel plates. Therefore, the layout of the production line of large straight seam welded pipe has two options: one is that the site of the large straight seam welded pipe production line is as close as possible to the pipe construction area, which is good for transporting steel pipe to the pipelines under construction because the no-load rate of railway transportation pipe, transportation costs amazing, reducing transportation costs from the steel pipe factory to the pipeline site is an important factor in reducing the cost of the project. The other is a large straight seam welded pipe production line near the site of steel production base or port, so you can solve the long super-wide steel transport problems, ease of transport of steel. China's large straight seam welded pipe production line construction has just started, should be a reasonable layout and planning, so that the basic layout of industrial rational, which is China's large straight seam welded pipe technology and pipeline construction are of great significance.
3. Provide high-quality steel for raw materials
Large straight seam welded pipe unit production of raw materials is mainly produced by plate mill wide steel plate (except for less than 600mm of steel can be produced by hot rolling mill outside the plate), the requirements of the supply of high quality steel. Oil and gas pipelines with high strength, toughness, weldability, H2S corrosion resistance and other aspects of the need for higher performance, the general use of low-carbon micro-alloy controlled rolling plate. Therefore, the requirements of the plate mill with advanced smelting equipment (especially refined Equipment) and a wide plate mill with perfect rolling control performance to produce hot-rolled wide steel plates of grade X60 ~ X75 or above and feed large straight seam welded pipe unit as raw material, so as to produce pipeline steel pipe conforming to API standard to meet the pipeline construction and development needs.
4. Digestion and innovation, to achieve localization of equipment
Construction of large straight seam welded pipe production line should be the principle of advanced technology, good product quality, low investment, good efficiency and strong competitiveness. In other words, it is necessary to adopt the latest technology and equipment in the world to reach the international advanced level to produce high-quality pipelines that meet the API standards. At the same time, it is necessary to reduce the investment and investment costs, enhance the economic benefits and enhance the competitiveness of enterprises. However, Large sets of straight seam welded pipe units, especially UOE unit equipment costs up to more than 100 million US dollars, thus reducing equipment costs is to reduce investment and investment costs. This problem can be used most of the domestic equipment design and manufacture of important equipment using foreign drawings, made in China, or the use of cooperative design, mainly domestic manufacturing, the introduction of a small amount of key equipment or components to achieve large longitudinal seam welded domestic technical assembly, domestic equipment and on this basis, digestion and innovation, in the future of large straight seam welded pipe unit can be based on domestic technology, domestic equipment, only imported single stand-alone in order to make China's large straight seam welded pipe technology to catch up with the international advanced level.
http://www.xysteelpipe.com/info/Problems-to-be-solved-in-building-large-straight-seam-welded-pipe-units-in-China-522-1.htm
评论
发表评论