20 seamless steel pipe is a high-quality steel pipe product made of high-quality carbon structural steel material, with high strength and excellent processing performance. The steel pipe is made into a capillary using a piercing process, and then processed into a finished product through processes such as hot rolling, cold rolling, or cold drawing. 20 # seamless steel pipe belongs to low-carbon steel pipe, and carbon steel can be divided into three categories based on carbon content: low-carbon steel, medium carbon steel, and high carbon steel. However, 20 # seamless steel pipe has a lower carbon content and is widely used in structural pipes, fluid pipes, low and medium pressure boiler pipes, and other fields. If there are no special requirements, 20 # seamless steel pipes are generally used.
The material of 20 # seamless pipe is 20 steel, which is a high-quality steel pipe product. The standards for seamless pipes include GB/T8162-2008, GB/T8163-2008, GB3087-2008, GB6479-2000, and GB9948-2006, which are widely used in the transportation of oil, natural gas, gas, water, and certain solid materials. Compared with 15 # steel, 20 # seamless pipe has slightly higher strength and higher cold deformation plasticity, making it suitable for processing processes such as bending, rolling, bending edges, and hammer arches. The welding performance of 20 # seamless pipe is good, suitable for processes such as arc welding and contact welding. When gas welding is used, the thickness is small, and it can be used to manufacture parts with strict external requirements or complex shapes. In addition, the cutting performance of 20 # seamless pipe is also good, suitable for manufacturing products with low stress but high toughness requirements. Its hardness is slightly lower than 45 # seamless steel pipe.
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