Aluminum Bahrain B.S.C., or simply Alba, is one of the largest industrial companies in the Middle East and is one of the largest aluminum producers in the world. The company is based in Bahrain and 84% of its total workforce are Bahraini nationals. The company supplies extrusion ingot (logs and billets). The diameters of the extrusion ingot supplied by Alba and tolerances on the diameters are listed below:

Diameter Tolerance: For Type A : 177 mm 2.0mm , For Type B : 254mm 1.5mm

Data for Type A are as follows: Jan 153., Feb 177 , March 187, April 171, May 182, June 181, July 169, August 179 , Sept 187, Oct 173., Nov 178. and Dec- 174..