As of September 2018 the inspection control was carried out over the activities of the following testing laboratories of the voluntary certification system INTERGAZCERT:

Central testing laboratory of the "Taganrog Metallurgical Plant" PJSC;

Department of control tests of the research center of the "Seversky Pipe Plant" PJSC;

Central plant laboratory of the "Vyksa Steel Works" JSC;

Central testing laboratory of the Joint Stock Company "Pervouralsk New Pipe Plant";

Central plant laboratory of the Stock Company “Izhora Pipe Mill”;

Central plant laboratory of the "Volzhsky Pipe Plant" JSC;

Test center "Trubotest" of the "Chelyabinsk Pipe - Rolling Plant" PJSC;

Joint laboratory of the control tests of the Limited Liability Company "Mechano-liteiny Zavod";

Based on the results of the inspections, it was decided to confirm the validity of the competence recognition certificates. Information about the current competence recognition certificates of the testing laboratories are listed in the registry of INTERGAZCERT.