bids are invited for glass piping 300155386 manufacturing and supply of complete coupling for glass piping as per the following specification : a) specification: 1) size: dn 300 as per iso 3587 or equivalant std, 2) set of 1 coupling comprises of 2 no of backing flange , having pcd = 405 mm , m10 x 12 no of hole , one pair of backing insert(split type) & 12 nos of fastener/springs 3) type : x-strong type end connection having both flanges are of split type. 4) moc - flange - silumin as per a 356 , inserts- silumin backed ptfe , fastener /spring : ss304 5) service: acid (hno3 &h2so4 ) notes: 1) vendor shall submit the material .test certificate from nabl or govt approved lab for the mechanical and thermal properties. 2) vendor may visit & submit the drawing to rcf for approval 3) vendor shall submit one sample for checking and approval from rcf before the start of complete lot of manufacturing. 4) design shall have miniumum material to have lighter self weight on the glass piping. as per tender st 2 300014228 manufacturing and supply of complete coupling for glass piping as per the following specification : a) specification: 1) size: dn 200 as per iso 3587 or equivalant std, 2) set of 1 coupling comprises of 2 no of backing flange , having pcd = 296 mm , m10 x 8 no of hole , one pair of backing insert(split type) & 08 nos of fastener/springs 3) type : x-strong type end connection having both flanges are of split type. b) moc - flange - silumin as per a 356 , inserts- silumin backed ptfe , fastener /spring : ss304 c) service: acid (hno3 &h2so4 ) notes: 1) vendor shall submit the material .test certificate from nabl or govt approved lab for the mechanical and thermal properties. 2) vendor may visit & submit the drawing to rcf for approval 3) vendor shall submit one sample for checking and approval from rcf before the start of com total quantity : 170