標(biāo)準(zhǔn)號(hào)：ISO 228-1-2000
中文標(biāo)準(zhǔn)名稱：非螺紋密封的管螺紋 第1部分:標(biāo)記、尺寸和公差
英文標(biāo)準(zhǔn)名稱：Pipe threads where pressure-tight joints are not made on the threads - Part 1: Dimensions, tolerances and designation
標(biāo)準(zhǔn)類型：J05
發(fā)布日期：1999/12/31 12:00:00
實(shí)施日期：1999/12/31 12:00:00
中國標(biāo)準(zhǔn)分類號(hào)：J05
國際標(biāo)準(zhǔn)分類號(hào)：21.040.30
適用范圍：This part of ISO 228 specifies the requirements for thread form, dimensions, tolerances and designation for fastening pipe threads, thread sizes 1/16 to 6 inclusive. Both internal and external threads are parallel threads, intended for the mechanical assembly of the component parts of fittings, cocks and valves, accessories, etc.These threads are not suitable as jointing threads where a pressure-tight joint is made on the thread. If assemblies with such threads must be made pressure-tight, this should be effected by compressing two tightening surfaces outside the threads, and by interposing an appropriate seal.NOTE 1 For pipe threads where pressure-tight joints are made on the threads, see ISO 7-1.NOTE 2 ISO 228-2 gives details of methods for verification of fastening thread dimensions and form, and recommended gauging systems.