FIELD: gas and oil industry. SUBSTANCE: invention is related to well-head equipment of flowing fittings. Suspension of tubing string is made of body with central hole joined to tubing string by means of upper and lower threaded connections and attachment unit of well-head valve located between threaded connections. Conical narrowing of central hole is made between attachment unit of well-head valve and lower threaded connection of body with tubing string. EFFECT: proposed suspension of tubing string makes it feasible to prolong service life of threaded surface accommodating plug or well-head valve and to lengthen time between overhauls of flowing fittings. 1 cl, 3 dwg
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