annual rate contract for supply of welding electrodes as per nit specification , general purpose mild steel welding electrode as per aws 5 . 1:e6012/e6013 & is: 814-1991 , er 4112 or er 4124 or er 4222 , size: 4 . 00 x 450mm . , general purpose mild steel welding electrode as per aws 5 . 1:e6012/e6013 & is: 814-1991 , er 4112 or er 4124 or er 4222 , size: 3 . 15 x 450mm . , general purpose mild steel welding electrode as per aws 5:1:e6012/e6013 & is: 814-1991 , er 4112 or er 4124 or er 4222 , size: 2 . 50 x 350mm . , universal type low heat input , high strength electrode for joining of dissimilar/unknown steel/manganese steel . deposit should have cr , ni , mn , mechanical property: uts 80-90kgf/sq . mm ( tolerance +/- 10% ) size 3 . 15 x 350mm . , universal type low heat input , high strength electrode for joining dissimilar/unknown steel/menganese steel , low heat input , high strength weld deposit should have cr . , ni , mn , mechanical property: uts 80-90kgf/sq . mm . ( tolerance +/- 10% ) size : 4 . 00 x 350mm . , ss low heat input electrode with high corrosion and heat resistant for arc welding of ss/low carbon steel . uts:520n/sq . mm , ( tolerance +/- 10% ) size: 4 . 00x 350 mm . suitable for ss 316 . , ss low heat input electrode with high corrosion and heat resistant for arc welding of ss/low carbon steel . uts:520n/sq . mm ( tolerance +/- 10% ) size: 3 . 15 x 350 mm . suitable for ss 316 , ss low heat input electrode with high corrosion and heat resistant for arc welding of ss/low carbon steel , uts:520n/sq . mm ( tolerance +/- 10% ) , size: 2 . 50 x 350 mm , suitable for ss 316 , ci non-machinable , low heat input electrode , uts:50-65kg/sq . mm , ( tolerance +/-10% ) size: 4 . 00 x 350mm . , ci machinable , low heat input electrode , uts:410n/sq . mm ( tolerance +/- 10% ) size: 4 . 00 x 350mm . , low heat input electrode for chamfering and gauging size : 4 . 00 x 350mm , laminated brown envelop size 10x12 with cos address , low heat input electrode for hard facing and build up of machine components . welds are highly resistant to abrasive wear and possesses moderate toughness . it can be used directly on the job without necessity of putting a buffer layer . hardness : 280-400 bhn , size : 4 . 00mm x 350mm