String shoe concrete BUR-BKB

;BUR-BKB-146; BUR-BKB-168; BUR-BKB-178; BUR-BKB-245;

Passage diameter of casing string, mm; 146,1; 168,3; 177,8; 244,5; Maximum shoe outer diameter, mm; 166,0; 187,7; 194,5; 269,9; Inner diametafetrer drilling-out, mm; 129,1; 150,4; 159,4; 226,6; Max compression load, кН; 250; 350; 350; 500; Diameter of holein float plug, mm; 90,0; 90,0; 90,0; 120,0; Total circulation holes area, mm²; 7564,5; 7966,5; 7966,5; 13716,0; Length, mm; 240; 260; 280; 310; Weight, kg; 10,9; 17,2; 18,6; 44,3;