Tender For supply of m. s electrode, rutile coated confirming to bis classification er 4211 of is: 814-2004 size: 3.15mm d , m. s electrod, rutile coated confirming to bis classification er 4211 of is: 814 2004 size: 4.00 , m. s electrode rutile coated confirming to bis classification er 4211 of is: 814- 2004 size 5.00mm di