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　　With the continuous improvement of seamless welded steel pipe product quality, the use of raw materials is declining, all kinds of new building materials are also on the market, and the replacement of construction products is fast. There is a solid foundation for the construction of various management and manufacturing industries.

　　The main products on the market are stainless steel, carbon steel and other seamless welded steel pipes with different diameters, as well as various elbow pipe fittings, pipe fittings and plastic pipes, with numerous specifications, which are widely used in petrochemical, shipbuilding and other engineering fields. The prosperity of the domestic construction industry is constantly rising, and under the circumstances of vigorously promoting the construction of energy conservation and independent innovation capacity, innovative technology will also be the development direction of the industry. Now seamless welded steel pipe industry is also struggling to make the pipeline industry set off another upsurge.

　　API 5L SSAW Welded Steel Pipe products need to have diversified and personalized characteristics, and to maintain the high-quality products, not to let a unit to produce too many varieties of products for the progress, so seamless welded steel pipe enterprises pursue quality assurance, otherwise the products are just like diversification is useless. At present, the quality of domestic welded steel pipe products is not particularly stable, so it is necessary to produce long-term, stable and reliable batch production of products with quality assurance. In this way, the product yield has increased, the energy consumption has also decreased, and the brand awareness has been created.

　　Seamless welded steel pipe is mainly used in shaft parts. It is mainly used to support transmission parts, transmit torque and bear load. Shaft parts are rotating body parts, whose length is larger than diameter, generally composed of cylindrical surface, conical surface, inner hole, thread and corresponding end face of concentric shaft. According to different structural shapes, shaft parts can be divided into optical shaft, stepped shaft, hollow shaft and crankshaft.

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