| 摘要 |
FIELD: pipeline engineering. ^ SUBSTANCE: method includes making metallic tips to form at least two collars on the outer side of each of the tips, mounting the tips on the mandrel coaxially to each other, laying a reinforcing rowing, e.g. fiberglass impregnated with a polymeric binder, on the tips. The hollows are filled with longitudinal and ring layers alternately. ^ EFFECT: enhanced reliability. ^ 4 dwg |
