| 摘要 |
FIELD: machine engineering in oil production, mainly processes and equipment for manufacturing pump rods. ^ SUBSTANCE: method is performed at using blank in the form of rod whose diameter is equal to that of pump rod body. Method comprises steps of cutting thread on end portions of rod; making separately all other constructional members and mounting them on body of pump rod during assembling operations. ^ EFFECT: enhanced operational reliability of pump rods, simplified process for making them, enlarged range of using pump rods. ^ 6 dwg, 3 tbl |
