Specifications Part 1 - Water Supply, Sewerage and Tube Well Works

Nominal BoremmmmOver 80 mm up to and including100 mmOver 100 mm up to and including125 mmOver 125 mm up to and including150 mmNote :- 1 MPa = 1 N/mm² = 0.102 0 kg/mm²Maximum PermissiblePressureMPaMaximum PermissibleTemperature0 C0.692600.831770.69 1710.50 1607.11 Marking7.11.1 -mark, IS NO.that is, IS 1239 (Part 1) and class of tubes, that is, L,M, and H, for light,medium and heavy class.7.11.2 The different classes of tubes shall be distinguished by colour bands, whichshall be applied as follows before the tubes leave theworks:(a) Light tubes - Yellow(b) Medium tubes - Blue(c) Heavy tubes - Red7.12 Types of Fittings7.12.1 Dimensions of the fittings shall be as per IS: 1239 (Part-II): 1992 Table 1, to 28.7.12.2 Manufacture: conforming to this standard shall be made from tubeswhich comply with all the appropriate requirements of IS 1239 (Part 1): 19907.12.3 Socket: Socket shall be manufactured from mild steel by any of the followingprocesses:a) Hot-finished seamless (HFS),b) Electric resistance welded (ERW),c) High frequency induction welded (HFIW), andd) Hot-finished welded (HFW),Where ever, tubular are supplied with sockets, the dimensions of socket shall be asunder :-Table No.- 7.9Nominal BoreMinimum Outside Minimum LengthDiameterAB(1) (2) (3)6 15 198 18.5 2710 22 28Urban Administration & Development Department Page 83