ingot is a piece iningots is a stock material, a semi-finished product which is uscontaining pingots varies from 98 to 100%. For example, grade Z0 contains 99.975% of pure metal, while Z0A has 99.98% of it.is an elemental metal. It is listed on the Periodic Table as “Zn,” with an atomic number of 30 and an atomic weight of 65.37, anis usually a gray metallic color, but it can be polishis a chemical element with the symbol Zn and atomic number 30.Identifying and finding best solutions for problems regarding function and quality of interior environments of buildings and making necessary designs, drawings and plans. Architect Designs buildings and advises on the procurement of buildings, provides concepts, plans, specifications and detailed drawings, and negotiates with builders.(a) of good design and construction and of adequate strength: (b) properly maintained: and (c) examined thoroughly by apetent person at regular intervals. 3. Interlocking guard for drum or basket:- (1) The cage housing, the rotating drum or basket of every centrifugal machine shall be provided with a strong lid.