procurement of different type of telephone cable single pair, 10 pair, and 50 pair at sgtpp wbpdcl procurement of different type of telephone cable single pair, 10 pair, and 50 pair at sgtpp wbpdcl , procurement of different type of telephone cable ( single pair, 10 pair, & 50 pair ) . at sgtpp, wbpdcl , cable cu 10 pair 0.5mm armoured telephone cable jelly filled additional data: minimum 500 mtrs. / drum, tolerance will be ( + / - ) 5% in drum length hsn: 8544 , cable, tele, 50, pairx0.5mm jelly filled, armoured ( copper conductor diameter 0.50mm ) additional data: minimum 500 mtr. / drum, tolerance will be ( + / - ) 5% in drum length. hsn code: 8544 , cable flat, single pair telephone 0.5 cu ( copper conductor diameter 0.50mm ) additional data: minimum 500 mtr. / coil, tolerance will be ( + / - ) 5%in coil length hsn code 8544 , each roll should contain