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DD300130A5
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Refractory protective layer on sliding and / or supporting elements of heating furnaces
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DD288204A5
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Composite pipe
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DD300696A7
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Method for monitoring piped-bank plant systems
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DD284420A5
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Method for the production of seamless pipes from automatic steel
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DD298605A5
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Method for length rolling of pipes
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DD282866A5
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Lochdorn for the shaft rolling of hollow bodies
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DD280703A1
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Method for the production of seamless steel tubes through the stress pressure
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DD280493A1
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Device for distributing stainless steel parts from a transfer road
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DD298214A5
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Method for producing circular bimetallic cavity bzw. full profile
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DD278987A1
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Method for producing a plastic coated steel tube
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DD279052A1
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Plastic coated steel tube
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DD298213A5
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Method for length rolling of pipes
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DD285488A7
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Hubsattelkupplung
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DD275415A1
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Method for the production of seamless pipes of high-weld, weldable, cold-coating models
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DD275197A1
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Method for piling pipes in a fixed working device
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DD273987A1
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Process for cold rolling of pipes
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DD298212A5
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Method for the continuous cold rolling of pipes
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DD273594A1
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Circuit arrangement for generating a constant grinding pressure in surface grinding
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DD272942A1
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Electrode for partial thermal or thermochemical short-term treatment
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DD276608A3
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Method and device for increasing the remainder duration of divided regenerative chambers
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