Dynamit Nobel Gmbh Explosivstoff-und Systemstechnik

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Troisdorf, DE

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Method and device for producing press-rolled pipes with inner wall...
- Patent number 6,038,901
- Issue date Mar 21, 2000
- Dynamit Nobel Gmbh Explosivstoff-und Systemstechnik
- Bernd Stein
- B21 - MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL PUNCHING...

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