1)API 7K,ISO6807,GOST28618 2)Transport water/oil base mud 3)Inner ... at high pressure in large volumes.Temperature Range: -20°C~121°C.Structure:Tube(lining):Principally compounded rubber, featuring oil-resistant, abrasion ... upon customers specific requirement.Sepcifacation: Grade A Grade B Grade C Grade D Grade EGrade A I.Din. mmO.Dmm W ...