SHOWA DENKO EXPORTS ALUMINIUM CASTING EQUIPMENT <Showa Denko Ltd> said it is exporting aluminium billet casting equipment and technology to countries that have recently begun aluminium smelting. A company official said it won a 500 mln yen order to deliver 10 sets of casting equipment to Venezuela's Venalum by end-1987. He said it received an order for one set from Aluminium Bahrain B.S.C. Last year and expects further orders from the Bahrain smelter. Showa Denko withdrew from smelting last year but expects to increase its sales of equipment and technology, he said.