316带内外环金属缠绕垫
金属缠绕垫片采用优质SUS304、SUS316(“V”形或“W”形) 金属带及其它合金材料与石墨、石棉、聚四氟乙烯、无石棉等软性材料相互交替重迭螺旋缠绕而成,在开始及末端用点焊方式将金属带固定。
金属缠绕垫片为半金属密合垫中回弹性*的垫片,金属缠绕垫片结构密度可依据不同的锁紧力要求来制作,并利用内外钢环来控制其zui大压紧度,金属缠绕垫片接触的法兰密封面的表面精度要求不高。
316带内外环金属缠绕垫
下表是缠绕垫片直径公差(即用于法兰的名义管道直径):
DIN (mm)ANSI B16.5
BS1560 (mm)
Mss sp-44API 605公差内环内径
垫片内径<=600<=24">=26" and <=34"±0.5>600 and <=800>24" and <=34">=36" and <=60"±0.9>800 and <=1600>34" and <=60" ±1.3>1600>60" ±1.6垫片外径<=600<=24"<=24"±0.9>600 and <=16000>24" and <=60">24" and <=60"±1.81600>60" ±2.2外环外径 >=1/2" and <=60"±0.9<=600<=24" 0-1.0>600 and <=1000>24" and <=34" 0-1.8>1000 and <=1600">34" and <=60 0-2.2