Shut-off device for well-head equipment von Arifulin, R. Kh, Kashtanov, I.M, Antonov, N.A

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Shut-off device for well-head equipment von Arifulin, R. Kh, Kashtanov, I. M., Antonov, N. A.

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Devising orifice spouting equipment for oil and gas wells von ARIFULIN, R. Kh

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New christmas tree arrangement von ARIFULIN, R. K

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Application of steel 40Kh surface hardened by high-frequency currents in the production of gate valve parts von Veliev, T. K., Safarov, R. S., Fataliev, N. S., Arifulin, R. Kh, Alekskerov, A. K.

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