bids are invited for class 300 flanged type carbon steel ball valve size 50nb - class 300 flanged type carbon steel ball valve size 50nb make chandra engg. and mech. pvt. ltd. as per annexure. , class 300 flanged type carbon steel ball valve size 25nb - class 300 flanged type carbon steel ball valve size 25nb make chandra engg. and mech. pvt. ltd. as per annexure. , class 300 flanged type carbon steel ball valve size 15nb - class 300 flanged type carbon steel ball valve size 15nb make chandra engg. and mech. pvt. ltd. as per annexure. , needle valves size 15nb - needle valves size 15nb make chandra engg. and mech. pvt. ltd. as per annexure. , excess flow check valves, size 25nb - excess flow check valves, size 25nb make chandra engg. and mech. pvt. ltd. as per annexure. , non return valve for ammonia service size 50nb class 300 flanged - non return valve for ammonia service size 50nb class 300 flanged make chandra engg. and mech. pvt. ltd. as per annexure. , non return valve for ammonia service size 40nb class 300 flanged - non return valve for ammonia service size 40nb class 300 flanged make chandra engg. and mech. pvt. ltd. as per annexure. , non return valve for ammonia service size 25 nb class 300 flanged - non return valve for ammonia service size 25 nb class 300 flanged make chandra engg. and mech. pvt. ltd. as per annexure. , class 300 flanged type strainer carbon steel size 50nb - class 300 flanged type strainer carbon steel size 50nb make chandra engg. and mech. pvt. ltd. as per annexure. , class 300 flanged type strainer carbon steel size 25nb - class 300 flanged type strainer carbon steel size 25nb make chandra engg. and mech. pvt. ltd. as per annexure. , ss unloading hoses 304l, flanged type, 600 class, size 50nb - ss unloading hoses 304l, flanged type, 600 class, size 50nb make chandra engg. and mech. pvt. ltd. as per annexure. , ss unloading hoses 304l, flanged type, 600 class, size 50nb - ss unloading hoses 304l, flanged type, 600 class, size 50nb mak