water drilling hose , drilling hose mud rotary drilling , drilling hose made according to API Spec. 7K . water drilling hose , drilling hose , mud rotary drilling , ... oil-resistant, abrasion-resistant, acid & alkali resistant Hose Reinforcement: 2~8 layers spiraled by single high- ... the layers into one complete and sound construction Hose Cover: Primarily CR fabricated, featuring oil-resistant, ...