Parts made from rods, plates and tubes made of oil containing polyamid, namely castors, guide rollers, supporting rolls, directing rolls, diabolo discs, crane castors, rope pulleys, rope feeders, rope deflection sheaves, wire guide rollers, conveyor castors, latch chain rollers, bandages for rollers, deflection sheaves, take-off rolls, smoothing rolls, pressure rolls, belt discs, driven rolls, in-feed-discs, gear wheels, toothed racks; bevel wheels, spiral gears, sprocket wheels, metering dis...