... .03515 min205 min40min95 Rockwell B maxFurnace parts - conveyor belts, rollers, burner parts, refractory supports, retorts and oven linings, fans, tube hangers ... min40min95 Rockwell B maxFurnace parts such as conveyor belts, rollers, burner parts, refractory supports, retorts and oven linings, fans, tube hangers ...