... resistant, abrasion-resistant, acid&alkali resistantReinforcement: 2-6 layers of high strength steel wire spiralCover: featuring oil-resistant, Low temperature, ... hose. We are the main supplier for CNPC, SINOPEC and CNOOC, and the products have been expored to Europe, North America, ... Middle East and Southeast Asia and so on.The LONGKAI(LK) rotary drilling hose is ...