annual rate contract arc for refilling carrier gas cylinders arc for refilling carrier gas cylinders of akm lab for 2 years, gail, cauvery basin , refilling ofhydrogen gas .scc and technicalspecification are as per annexure-b attached in tender document , refilling ofzero air.scc and technicalspecification are as per annexure-b attached in tender document , refilling ofargon gas. scc and technicalspecification are as per annexure-b attached in tender document , refilling ofnitrogen gas . scc and technicalspecification are as per annexure-b attached in tender document , hydrostatic stretch test of gas cylinder. scc and technicalspecification are as per annexure-b attached in tender document , replacement of brass cylinder valve. scc and technicalspecification are as per annexure-b attached in tender document , replacement of cylinder cap.scc and technicalspecification are as per annexure-b attached in tender document , replacement of cylinder valve gland nut. scc and technicalspecification are as per annexure-b attached in tender document , changing worn out valve spindle. scc and technicalspecification are as per annexure-b attached in tender document , degreasing of cylinder with oil / paint contamination. scc and technicalspecification are as per annexure-b attached in tender document , painting of gas cylinders as per latest is: 4379 standard.scc and technicalspecification are as per annexure-b attached in tender document