FUNCTION:
——for connecting tubing, as well as underground equipment having connecting ends with male thread tubing used during operation of oil and gas wells.
SPECIFICATIONS:
——tubing collars are certified and manufactured with geometric dimensions in accordance with GOST 633-80, steel provides mechanical properties of the corresponding category of strength pipe material in accordance with GOST 633-80. Grades: «D», «K», «E», «L». Examples of symbols for collar of strength group E, nominal diameter 60 mm: 60-E collar STO 3665-059-05753336-2008 – refers to collars for plain end pipes, B-60-E collar STO3665-059-05753336-2008 – refers to collars for pipes with external upset ends.
Tubing collar
For connecting tubing, as well as underground equipment having connecting ends with male thread tubing used during operation of oil and gas wells.