Counter flanges

The counter flanges are designed for coupling the wellhead equipment and technological equipment using threaded connections. The flanges are manufactured with the NKT, NKTV, ASME and other thread types under Russian and foreign standards.

Specifications pdf (282 KB)
  • Versions of flange port areas, mm (in): 52 (2 1/16), 65 (2 9/16), 80 (3 1/8), 100 (А 1/16), 130 (5 1/8);
  • Operating pressure, MPa (psi): 21 (3000), 35 (5000), 70 (10000), 105 (15000);
  • Working medium: water, oil, oil products, alkali, inhibited acid solutions, propane, cement and clay solutions;
  • Climate version MCC under GOST 15150-69;
  • Placement category I under GOST 15150-69;
  • Ambient temperature -60°С to +40°С;
  • Corrosion-proof design: non-corrosive, corrosive К1 and К2.
Basic specifications