Tender For supply of low hydrogen m. s. welding electrodes supratherme special size-3.15 mm. dia. x 450 mm. long. as per aws-e , ss to ms welding electrode size- 3.15 x 350 mm e309-cb-15, , m. s. welding electrodes size-4 mm, dia. x 450 mm. long. as per aws e6013