DIN17175 13CrMo44 alloy steel pipe

13CrMo44 alloy steel pipe under the Federal German Industrial Standard (DIN17175).

13CrMo44 alloy tube and seamless tube are both related and different, and should not be confused.
The alloy tube is defined by the steel pipe according to the production materials (that is, the material), as the name implies, it is a tube made of alloy
The 13CrMo44 seamless pipe is defined by the steel pipe according to the production process (seamless seamless). The difference from the seamless pipe is the seamed pipe, including straight seam welded pipe and spiral pipe.

DIN17175 13CrMo44 steel alloy pipes Chemical Composition

DIN17175 13CrMo44 steel alloy pipes Mechanical Property

DIN17175 13CrMo44 steel alloy pipes manufacturing process:
1. Hot rolling (extruded seamless steel tube): round tube billet → heating → perforation → three-roller cross-rolling, continuous rolling or extrusion → tube removal → sizing (or reducing diameter) → cooling → straightening → hydraulic test (Or flaw detection) → mark → storage
2. Cold drawn (rolled) seamless steel pipe: round tube billet → heating → perforation → heading → annealing → pickling → oiling (copper plating) → multi-pass cold drawing (cold rolling) → billet → heat treatment → straightening →Hydraulic test (flaw detection)→Marking→Storage.

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