Thick-Walled Straight Seam Welded Pipe

Thick-Walled Straight Seam Welded Pipe refers to steel pipes with relatively large wall thickness (usually the ratio of wall thickness to pipe diameter is relatively high), which are made by (coiling and forming) of steel plates or strips, followed by straight seam welding process. Its weld is a straight line parallel to the pipe axis, distinguishing it from the spiral weld of spiral seam welded pipes.

Main Features

• Strong mechanical properties: The thick-walled design endows it with high compressive and anti-deformation capabilities, enabling it to withstand large loads and pressures. It is stable and reliable in high-pressure transportation and heavy structural support scenarios, such as high-pressure fluid transmission pipelines, ensuring the safety of medium transmission.
• Wide material adaptability: Carbon steel meets general strength requirements; low-alloy steel can cope with complex working conditions such as high temperature, high pressure, and corrosion; stainless steel has both corrosion resistance and aesthetics, suitable for special environments such as food, medical, and marine industries.
• Flexible production: There are various production processes. High-frequency welding has high efficiency and is suitable for mass production; spiral welding can produce large-diameter pipes with narrow strip steel; it can also be customized with different calibers, wall thicknesses, and lengths to meet diversified project requirements.
• Cost advantage: Compared with seamless pipes, the production equipment is lighter, with less investment and faster forming. The cost is more than 20% lower in mass production, featuring both economy and practicality.

Application Fields

Industrial transportation: Used in fluid (oil, gas, chemical media) transmission pipelines in industries such as petroleum, natural gas, and chemical industry. With the advantages of thick walls and materials, it resists high pressure and corrosion, ensuring the production process.
Building structures: Used as structural pipes for building pile foundations, bridge supports, steel structure frames, etc., such as pile foundations and trusses of large buildings and bridges. It utilizes mechanical properties to bear building loads and ensure structural stability.
Machinery manufacturing: It is a key component of heavy machinery, pressure vessels, mining equipment, etc., such as hydraulic cylinders and equipment housings. It relies on thick walls and strength to ensure safe and stable operation of equipment.
Energy and electricity: In power station facilities such as thermal and hydroelectric power generation, it is used for steam-water pipelines and circulating water pipelines, adapting to working conditions such as high temperature, high pressure, and water flow impact, maintaining the operation of energy systems.
Municipal engineering: Used in urban water supply, sewage treatment, gas transmission and other pipe networks, meeting the requirements of municipal construction for pipe strength, durability, and tightness, ensuring urban basic livelihood.
Special fields: Stainless steel thick-walled straight seam welded pipes are widely used in food processing, medical equipment, marine engineering (such as shipbuilding, seawater desalination) due to their corrosion resistance and hygiene characteristics, such as transmission pipelines in food factories and structural and fluid transmission components of ships.