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Small-caliber thick-walled seamless pipe refers to a steel pipe with a small ratio of outer diameter and wall thickness, with a minimum diameter of 3mm and a minimum wall thickness of 1mm. Small diameter thick wall seamless steel pipe weight formula :[(outer diameter - wall thickness)* wall thickness]*0.02466=kg/ m (weight per meter) It is mainly used for petroleum geological drilling pipe, petrochemical cracking pipe, boiler pipe, bearing pipe and high-precision structural pipe for automobiles, tractors and aviation. Small-caliber thick wall seamless steel pipe materials include: 10#, 20#. 25#, 35#, 45#, 16Mn, etc.
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