Couplings for tubing and casing

• Marking: In accordance with the strength group API 5CT (GOST R 53366-2009), the couplings are painted in the corresponding color. Depending on the requirements of the standard or the customer, marking is made with branding or paint;
• Strength groups:
  H40, J55, K-72, N80-1, N80Q, L80-1, L80-13Cr, C95, P110 according to API 5CT, GOST R 53366-2009
  D, K, E, L, M, P according to GOST 633-80, GOST 632-80;
• Casing thread: STC, LTC, BC;
• Tubing thread: EU, NU;
• Coating: thermal diffusion zinc coating (TDC) according to TU 4859-002-62031850-2014, copper, phosphate;
• Outer diameter of the coupling for tubing: 60.32 - 114.3 mm;
• Outer diameter of the sleeve for casing: 114.3 mm - 473 mm.

Additional options

• Couplings of reduced outer diameter;
• Special bevel;
• Warranty on the number of hoisting operations (STR) provided that the TDC is coated for various types of threaded joints in accordance with TU 4859-002-62031850-2014.

Supply

• Delivery is carried out in wooden (steel) boxes.