Scope of application: used in drilling, cementing, workover and other operations, as a flexible connector for mud manifolds, cementing manifolds, etc., to transport water-based mud, oil-based mud, etc. under high pressure. Inner layer: UPE/NBR/SBR/HNBR/PTFE, inner diameter type: full flow, reinforcement layer: reinforcement layer of 2-6 layers of steel wire winding structure, cover layer: wear-resistant synthetic rubber layer, temperature range: -25℃~ +80℃/-30℃~+160℃, joint type: integral union, executive standard: API Spec 7K. Structure: It is composed of inner rubber layer or stainless steel armored inner tube, carbon fiber reinforcement layer, middle rubber layer, steel wire reinforcement layer (steel chain line…