METHOD OF MANUFACTURING PROFILE PIPES USED IN WELL CONSTRUCTION,AND APPARATUS FOR PERFORMING THIS METHOD von BULGAKOV R.T, VAKULA Y. V, ALESHIN V. A, MINGAZOV I. F, VAFIN I. Z, LYASHENKO I. A, ABDRAKHMANOV G.S, FOTOV A. A, DUEV V. N, FROLOV A. Y, ZAINULLIN A.G, MOISEEV G. P, PEROV A. V, IBATULLIN R. K, SHAYAKHMETOV S. K

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METHOD FOR MANUFACTURE OF SHAPED SHUTOFF DEVICES von Zajnullin A.G, Duev V.N, Ljashenko I.A, Bulgakov R.T, Vakula Ja.V, Abdrakhmanov G.S, Moiseev G.P, Perov A.V, Shajakhmetov Sh.K, Fotov A.A

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