标题: 对焊异径法兰 [打印本页] 作者: smxkjt 时间: 2017-6-12 08:45 标题: 对焊异径法兰 各位，有谁知道对焊异径法兰怎么设计？有相应的标准吗？作者: 疯狂蜗牛 时间: 2017-6-12 08:57
第一次听说，什么概念？作者: smxkjt 时间: 2017-6-12 09:01
一对法兰两侧接管口径不一样作者: COLORZERO 时间: 2017-6-12 09:08
夹套法兰 变径法兰 HG/T20592-20635-2009上面有的。。。作者: 幸好有你 时间: 2017-6-12 13:46
ASME B16.5-2013中有相关描述，Table 6, Note 4:
(4) For method of designating reducing threaded and reducing slip-on flanges, see para. 3.3 and Examples below.
EXAMPLES:
(1) The size designation is NPS 6 x 2 1 2 — Class 300 reducing threaded flange. This flange has the following dimensions:
NPS 2 1 2 p taper pipe thread tapping (ASME B1.20.1) 320 mm p diameter of regular NPS 6 Class 300 threaded flange 35 mm p thickness of regular NPS 6 Class 300 threaded flange 178 mm p diameter of hub for regular NPS 5 Class 300 threaded flange. Hub diameter may be one size small to reduce machining. In this example, a hub diameter of NPS 2 1 2 would be the smallest acceptable.
15.5 mm p height of hub for regular NPS 5 Class 300 threaded flange
(2) The size designation is NPS 6 x 2 — Class 300 reducing threaded flange. Use regular NPS 6 Class 300 blind flange tapped with NPS 2 taper pipe thread (ASME B1.20.1). 作者: 外来人 时间: 2017-6-12 13:52
学习一下 作者: fufu85 时间: 2017-10-25 11:54
标准法兰，密封面不变，对焊外径变小，就是异径法兰