Bolts, nuts and washers shall conform to the requirements as to chemical composition stated in the respective standards for high-tension bolts.
Steel for nuts and washers shall be made according to the relevant standards meeting the requirements pertinent to the bolts.
For any welding work, only the appropriate welding rod, either arc or gas, shall be used. The tensile properties shall conform to the material to be welded as specified in the respective standards.
The electrodes for arc-welding shall be classified on the base of mechanical properties of the as-welded deposited weld-metal, type of covering, welding position of the electrodes and type of current.
Cast iron shall be close grained, tough and uniform in character and shall be cast from the best grey pig and scrap iron. It shall have a tensile strength of not less than 142 N/mm2.
All steel members to be delivered to Site shall bear a protective painting. This protective painting shall be done in accordance with general practice and recognized methods, the manufacturer's instructions and according to the standards specified.
Iron artistic fences and tailings shall be made of stainless steel (iron gate frame materials can partially be cast iron or wrought iron).
Gate shall be side-opening iron gate.