Welcome To Metal Industries Workers' Union 255-B Jalan Besar, Singapore 208928 Tel: 2936121 Fax: 2936115 Background: Formed 1981. Scope of Representation: The Union is open to all persons who are locally employed by the metal works, steel mills, metal containers, iron/steel casting and plating, radiators/oil coolers, grinding machines, ball bearings, metal furniture, mechanical engineering ...