... 2High quality,on-time delivery 3ISO,TS,EN,AS Floating Roof Storage Tank with a Nylon Composite Central Flexible ... Product SynopsisNylon composite central flexible drain pipe used in floating roof storage tank is one kind offlexible and spoolable composite ... and reliable.Nylon composite central flexible drain pipe used in Floating roof storage tank is installedseparately, no joints, no counterweight. ...