... wire spiralCover: featuring oil-resistant, Low temperature, weather proof and anti-ageingCoupling type:LP and TBG of API Spec 5B,Flange or clip ... 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 ...