Hot oil pumps include hot oil gear pump and hot oil centrifugal pump. If you are using for hot oil circulation, choose a centrifugal pump is a good idea.
Hot oil gear pump applicable
Hot oil gear pump 
Gear Hot Oil Pumps With Motor
Hot oil gear pump applicable temperature is ≤250℃. Viscosty of 5~1500cst.
Pump material: cast steel
Sturcture:
All the spare are made from anti-high temperature material.This pump with safety valve.
Flow:1~65M3/H;
Discharge Pressure:0.3~0.6~1.0MPA.
Inlet/Outlet: 1″ 1.5″ 2″ 3″ 4″
Hot oil centrifugal pump applicable
Hot Oil Pumps With Motor 
Hot Oil Centrifugal Pump
Hot oil centrifugal pump applicable temperature is ≤350℃. Widely used in hot oil circulating pump.
High temperature jacketed asphalt pumps or boiler heating systems often use this pump.
This pump is ramed with soft wadding,hice for hot material.Should not lleak or so.
High performence with small volume and noise.
Flow:1~350M3/H.