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What Is Welded Steel Pipe

Qingdao Wuxiao | Updated: Aug 02, 2017

           Welded steel pipe is also known as welded pipe, is made of steel plate or steel after the forming of welded steel pipe. Welded steel pipe production process simple, high production efficiency, variety specifications, equipment, but the general strength of less than seamless steel tube. Since the 1930s, with the rapid development of high quality strip rolling production and the progress of welding and inspection technology, the weld quality has been increasing, the variety specifications of welded steel pipe are increasing, and more and more fields have replaced the seamless steel tube. Welded steel tubes are divided into straight seam welded pipe and spiral welded pipe.Steel Pipe

          Welded steel pipe used in the billet is steel plate or strip, because of its different welding process and divided into furnace welded pipe, welding (resistance welding) pipe and automatic arc welded pipe. Because of its different welding forms are divided into straight seam welded pipe and spiral welded pipe two. Because of its end shape is divided into circular welded pipe and shaped (square, flat, etc.) welded pipe.The welded pipe is divided into the following varieties because of its different materials and uses:

            gb/t3091-2001 (low pressure fluid transport galvanized welded steel pipe). Mainly used for conveying water, gas, air, oil and heating hot water or steam, such as the general lower pressure fluid and other uses. Its representative material is: q235a grade steel.Steel Pipe

              gb/t14291-2006 (Mine fluid transport welded steel pipe). It is mainly used for direct seam welded steel pipe for mine pressure, drainage and shaft gas discharge. It represents material q235a, B-Class steel. gb/t14980-1994 (low pressure fluid transportation with large diameter welded steel pipe). Mainly used for conveying water, sewage, gas, air, heating steam and other low-pressure fluids and other uses. It represents the material q235a grade steel.Steel Pipe

            GB/T12770-2002 (stainless steel welded steel pipe for mechanical structure). Mainly used in machinery, automobiles, bicycles, furniture, hotels and hotel decoration and other mechanical components and structural parts. Its representative material 0cr13, 1cr17, 00cr19ni11, 1cr18ni9, 0cr18ni11nb and so on.Steel Pipe


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