30CrMo alloy steel pipe contains carbon 0.26~0.34, silicon 0.17~0.37, manganese 0.40~0.70, molybdenum 0.15~0.25, chromium 0.80~1.10, 30CrMo alloy steel pipe and seamless tube are both related and different, and should not be confused.
30CrMo alloy steel pipe is defined by the steel pipe according to the production material (that is, the material), as the name implies, is the pipe made of alloy; while the seamless pipe is defined by the steel pipe according to the production process (seamless and seamless), which is different from the seamless pipe. It is seam pipe, including straight seam welded pipe and spiral pipe.
Manufacturing Process of 30CrMo alloy steel pipe
30CrMo alloy steel pipe hot rolling (extruded seamless steel tube): round tube billet → heating → piercing → three-roll cross rolling, continuous rolling or extrusion → pipe removal → sizing (or reducing) → cooling → straightening → hydraulic test (or Flaw detection) → mark → warehousing.
30CrMo alloy steel pipe cold drawn (rolled) seamless steel pipe: round tube blank → heating → piercing → heading → annealing → pickling → oiling (copper plating) → multi-pass cold drawing (cold rolling) → billet tube → heat treatment → straightening → water Compression test (flaw detection) → mark → warehousing.
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