Who can approve Railway and ROB drawings of DFCCIL, RVNL,...
The approval process for Railway and Railway Over-Bridge (ROB) drawings related...
What are 1G,2G,3G,4G and 1F,2F,3F,4F weld designations?
The weld designations 1G, 2G, 3G, 4G and 1F, 2F, 3F, 4F refer to specific welding...