Tender For supply of manual metal arc welding (mmaw) electrodes as per ncd- 1501 size: 2.5mm dia x 350mm long (suitable fo , manual metal arc welding (mmaw) electrodes as per ncd-1501 size: 3.15mm dia x 450mm long (suitable f , manual metal arc welding (mmaw) electrodes as per ncd-1501 size: 4mm dia x 450mm long (suitable for