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BR9205053A
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Process and equipment for manufacturing seamless pipe
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BR9200504A
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Equipment and process for tempering steel pipes
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BR9001116A
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Hydraulic circuit and process for tempering steel pipes by internal cooling
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BR8901760A
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Process and device for leading steels connected to lead
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BR8606220A
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TUBE HAVING A TIP-shaped END AND THREADED CONNECTION FOR TUBES
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BR8605835A
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Method and device for the extraction of copper molds, engines, in continuous language
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BR8206364A
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Process of agglomeration of fine charcoal or mineral
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BR8202737A
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Auto - adjustable multiple reduction reducer
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