ICS23.040.40 ISBN978-974-292-344-0 THAI INDUSTRIAL STANDARD . 21972547ISO 4145 : 1986NON ALLOYSTEELFITTINGSTHREADEDTOISO7/1 ISO 7/1 ISO7/1 6 10400 0 2202 3300 123 27 16 2549. 21972547(2) 15 .. 2511 ISO 7/1 ISO41451986NonalloysteelfittingsthreadedtoISO 7/1 (identical) ISO (3) 3457( .. 2548 ) .. 2511 ISO 7/1 15 .. 2511 ISO7/1 .2197-2547 29 .. 2548 1 . 2197 2547ISO 4145 1986 ISO 7/1 ISO 4145-1986 Nonalloy steel fittings threaded toISO 7/1 (identical) ISO ISO 7/1 ISO 7/1, PipethreadswherepressuretightjointsaremadeonthethreadsPart1:Designation,dimensions and tolerancesISO228/1, Pipe threads where pressuretight joint are not made on the threads Part 1 : Designation,dimensions and tolerancesISO 272, Fasteners Hexagon products Widths across flatsISO2546, Seamless plain end tubes made from unalloyed steel and without quality requirementsISO2547, Welded plain end tubes made from unalloyed steel and without quality requirements ISO 4145-1986 3 ISO 4145-1986 4 ISO 4145-1986 5 2 . 2197 2547ISO 4145 1986 ISO 4145-1986 6 ISO 4145-1986 7 ISO 4145-1986 8 ISO 4145-1986 9 3 . 2197 2547ISO 4145 1986 4 . 2197 2547ISO 4145 1986 5 . 2197 2547ISO 4145 1986 6 . 2197 2547ISO 4145 1986 7 . 2197 2547ISO 4145 1986 8 . 2197 2547ISO 4145 1986 9 . 2197 2547ISO 4145 1986 10 . 2197 2547ISO 4145 1986 11 . 2197 2547ISO 4145 1986 12 . 2197 2547ISO 4145 1986 13 . 2197 2547ISO 4145 1986 14 . 2197 2547ISO 4145 1986