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China Steel Pipe-Diameter expansion of LSAW steel pipe-lsaw steel pipe
LSAW steel pipe is a welded pipe produced by pressing (rolling) the steel plate into a tube blank in a mold or a forming machine, and using a double-sided submerged arc welding method and expanding the diameter. The finished product has a wide range of specifications, good toughness, plasticity, uniformity and compactness of the weld, and has the advantages of large pipe diameter, pipe wall thickness, high pressure resistance, low temperature resistance and strong corrosion resistance.LSAW steel pipe expansion is a pressure processing process that uses hydraulic or mechanical means to apply force from the inner wall of the steel pipe to expand the steel pipe radially outward. The mechanical method is simpler and more efficient than the hydraulic method, and the steel pipe machining is more accurate under the condition of high precision.The expansion process of LSAW steel pipe is divided into mechanical expansion and hydraulic expansion.Чытаць далей -
China Steel Pipe-Differences Between ERW and LSAW Steel Pipe-lsaw steel pipe
Straight seam welded steel pipes are divided into high frequency resistance welding and submerged arc welding according to the welding process. Straight seam submerged arc welding is referred to as LSAW, and longitudinal high frequency resistance welding is referred to as ERW.Compared with submerged arc welding, high frequency electric resistance welded steel pipes (ERW steel pipes) do not add any welding materials during the welding process in the ERW process, and the weld formation does not undergo a thermal melting state, but the weld metal undergoes a recrystallization process. Therefore, the formed weld seam is completely consistent with the chemical composition of the base metal. After the steel pipe is welded, it is annealed to produce the cold working internal stress and welding internal stress. Therefore, the comprehensive mechanical properties of the ERW steel pipe are better.Чытаць далей -
Трубы LSAW і іх прымяненне-lsaw сталёвая труба-зварная сталёвая труба
The manufacturing process of Longitudinal Submerged Arc Welded (LSAW) pipes is a complex and precise procedure designed to produce durable and reliable steel pipes for diverse industrial applications. The process typically begins with the uncoiling of a steel coil, which is then leveled and trimmed to the required size. The prepared steel strip is then formed into a cylindrical shape through a series of bending operations. Subsequently, longitudinal welding is carried out using the submerged arc welding method. This involves creating a high-quality weld seam along the length of the pipe by melting the edges of the steel plate with a continuous electrical arc, while a granular flux shields the welding area, ensuring a clean and efficient weld.In the case of UOE (Uing and Oing) LSAW pipes, after the initial welding, the pipe undergoes Uing, Oing, and expanding processes to achieve the desired dimensions and mechanical properties. Similarly, the JCOE (J-ing, C-ing, O-ing, and E-ing) LSAW pipes involve multiple steps, including J-ing and C-ing to form the initial shape, O-ing for further shaping, and E-ing for final expansion. These processes contribute to the overall strength and integrity of the LSAW pipes, ensuring they meet stringent quality standards. The final steps of the manufacturing process include inspection, testing, and coating to guarantee the pipes' performance and longevity in various industrial environments.Чытаць далей -
Як правільна мантаваць падземныя газавыя трубы
When installing underground gas lines, it is crucial to choose the correct type of gas linesЧытаць далей -
Святкаванне Каляд і Новага 2024 года з бясшвовымі сталёвымі трубамі Huayang
As 2023 draws to a close and the festive season of Christmas and New Year is approachingЧытаць далей -
Revolutionize the carbon steel pipe industry with Huayang in 2024
In 2024, we will start a new journey and continue improving our systemЧытаць далей -
The End of 2023: Reflecting on Huayang's Steel Pipe Advancements
Time flies, and 2023 is about to come to an end. We would like to express our sincere gratitude tЧытаць далей -
Different Types of Carbon Steel And Carbon Steel Pipe
Carbon steel and Carbon steel tubes come in various types, each with specific characteristics suited for different applications.Чытаць далей -
Carbon Steel Pipe: Diverse Uses and Benefits
Everyone is aware that carbon steel tubes are available in both hot and cold rolled (Чытаць далей
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