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Welded steel pipe, also known as welded pipe, is a steel pipe made of steel plate or strip steel after crimping and welding, generally with a length of 6 or 12 meters. The production process of welded steel pipe is simple, the production efficiency is high, there are many varieties and specifications, and the investment in equipment is small, but the general strength is lower than that of seamless steel pipe.
Standards: ASTM A53/GB 3091/API 5L
Material：Grade B、Q235A、Q235C、Q235B、16Mn、20#、Q355、L245、L290、X42、X46、X60、X80
Advantage:
The production process of straight seam welded pipe is simple, the production efficiency is high, the cost is low, and the development is rapid. The strength of the spiral welded pipe is generally higher than that of the straight seam welded pipe, and the welded pipe with a larger diameter can be produced with a narrower billet, and welded pipes with different diameters can be produced with the same width billet. But compared with the straight seam pipe of the same length, the weld length is increased by 30~100%, and the production speed is lower.
Application:
Welded pipes are widely used in water projects, petrochemical industry, chemical industry, electric power industry, agricultural irrigation, and urban construction.
Used for liquid transportation: water supply and drainage. For gas transportation: gas, steam, liquefied petroleum gas.
For structural purposes: as piling pipes and bridges; pipes for wharves, roads, and building structures, etc.
