標準號：PS 473-1965
中文標準名稱：燃氣list管和螺旋管件的管螺紋，壓力密閉接頭安裝在螺紋上（1/8英寸-6英寸）
英文標準名稱：PIPE THREADS FOR GAS LIST TUBES AND SCREWED FITTINGS WHERE PRESSURE-TIGHT JOINTS ARE MADE ON THE THREADS (1/8 INCH TO 6 INCHES)
發布日期：1965/1/1 12:00:00
實施日期：1999/12/31 12:00:00
適用范圍：This Pakistan Standard dealings with Pipe Threads for joints which are made pressure type by the meeting of the threads themselves.1.2 This thread can he spread up in two groups :(1) Taper external and taper internal threads.(2) Taper external and parallel internal threads.1.3 Parallel External Pipe Threads are not suitable for making pressure type on the meeting threads. This type of threads will be dealt with in a separate standard.1.4 The Pakistan Standard pipe Size Range is from l8 to 6 inches nominal bore (inclusive) Thread forms, dimensions and Tolerances for these size of pipes are given in this standard.