金属缠绕垫片
时间:2013-08-20 阅读:524
【金属缠绕垫片】厚度公差:
项目 | 厚度(mm) | 公差(mm) |
垫片厚度 | 4.5, 3.2 | +0.2 |
环厚度 | 3.0 | ±0.24 |
【金属缠绕垫片】直径公差(即用于法兰的名义管道直径):
| DIN (mm) | ANSI B16.5 | API 605 | 公差 |
内环内径 | <=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 <=160000 | >24″ and <=60″ | >24″ and <=60″ | ±1.8 | |
1600 | >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 |
【金属缠绕垫片】技术参数:
缠绕垫片系数 | m=2.5-4 |
缠绕垫片使用压力 | ≤25MPa |
缠绕垫片使用温度 | -196℃-700℃(氧化性介质中不高于600℃) |
缠绕垫片zui小预紧比压 | y=68MPa |
带内外环由基本型金属缠绕垫片加上由钢板做成的内外环而构成,内外环用来加强压力、防止缠绕松动。外环可选不同材质。金属缠绕垫片分四种形式:基本型(DM-6006A)、带内环型(DM-6006B)、带外环型(DM-6006C)、带内外环型(DM-6006D)。应用范围: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