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Parameters of high-precision cold-drawn steel pipes for hydraulic cylinders and pneumatic cylinders Parameters of high-precision cold-drawn steel pipes for hydraulic cylinders and pneumatic cylinders Product Specifications Inner diameter of cylinder barrel: φ 30-400 mm Wall thickness: 2.5-55mm Steel pipe materials are 20#, 45#, 16Mn, 25Mn and 27SiMn Product standard GB/TB713-88 ISO4394/1-1980(E)
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