supply of pvc sleeves for berth chain of coaches size:28 mm inner dia x 1.0 mm thk.x 50 mtrs. length to s.e.rly.drg no.-kgp-2131,alt.nil. matl.& specn: pvc. colour: blue shade 4000 mtrs, brown shade: 2000 mtrspvc sleeves for berth chain of coaches size:28 mm inner dia x 1.0 mm thk.x 50 mtrs. length to s.e.rly.drg no.-kgp-2131,alt.nil. matl.& specn: pvc. colour: blue shade 4000 mtrs, brown shade: 2000 mtrs,pvc sleeves for berth chain of coaches size:28 mm inner dia x 1.0 mm thk.x 50 mtr s. length to s.e.rly.drg no.-kgp-2131,alt.nil. matl.& specn: pvc. colour: blue shade 4000 mtrs, brown sh ade: 2000 mtrs [ warranty period: 30 months after the date of delivery ]