Orient Abrasives Ltd. Supplies Slide Gate Plate Refractories. Orient Abrasives Ltd. Has been awarded ISO 9001 certifications. Orient Abrasives Ltd. Manufcatures calcined and fused alumina products. Slide Gate Plate Refractories is used for various international systems including flocon, interstop [including LS series], vesuvius [including LV series], saflow and sanac. Slide Gate Plate Refractories are manufactured in different qualities, namely alumina carbon, alumina spinnel carbon, magnesia spinnel carbon and alumina zirconia carbon. Inserts are used for repairing old slide gate plates for re-use.