DN75 内外环金属缠绕垫厂家价格 金属缠绕垫片采用优质304 316 201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。环宇生产的金属缠绕垫片多用在石油、化工、冶金、电力、船舶、机械等行业的管道、阀门、压力容器、冷凝器、换热器、塔、人孔、手孔等法兰连接处密封
DN75 内外环金属缠绕垫厂家价格
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