Welding of ring seams on pipelines via several burners - where each burner is fitted on trolley driven upwards along ring guide located round pipes and carrying weld pool retention... von NIKOLAEVITSCH KOPYLOV,LEONID, EVGENIEVITSCH PATON,BORIS, SOLOMONOVITSCH ROTENFELD,VENIAMIN, EVGENIEVITSCH PATON,VLADIMIR, YAKOVLEVITSCH DUBOVETSKY,VASILY, KONSTANTINOVITSCH POCHODNYA,IGOR, ANATOLIEVITSCH KOTOV,VALENTIN, GRIGORIEVITSCH BELFOR,MICHAIL, ALEKSANDROVITSCH GAVRILJUK,JURY, IVANOVITSCH SAPRYKIN,JURY, RACHMILEVITSCH UNIGOVSKY,MICHAIL, GRIGORIEVITSCH MAZEL,ALEKSANDR, MICHAILOVITSCH SERAFIN,OREST, YAKOVLEVITSCH LESCHINSKY,EFIM, NIKOLAEVITSCH SCHLEPAKOV,VALERY, ZACHAROVITSCH SCHEINKIN,MARK, NIKOLAEVITSCH KUTOVOI,ANDREI, IVANOVITSCH SLEPTSCHENKO,VLADIMIR

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