| 摘要 |
hydraulic and air-operated systems working under pressure. SUBSTANCE: front part of the cutting ring of the joint is provided with curvilinear internal and external surfaces provided with cutting edge. Back part of the cutting ring is provided with banding made in shape of unclosed turn. EFFECT: increased radial and axial rigidity of the ring, reduced axial force when screwing the joint due to reducing radial and axial rigidity of the front part of the cutting ring. 3 cl, 1 dwg
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