陶瓷纤维金属缠绕垫生产厂家，金属垫专卖垫，铁氟龙四氟密封垫
缠绕垫片基本体厚度公差：
| 项目 | 厚度(mm) | 公差(mm) |
| 垫片厚度 | 4.5, 3.2 | +0.2 -0.1 |
| 环厚度 | 3.0 | ±0.25 |
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-44 | API 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" | ±1.8 | |
| 1600 | >60" | ±2.2 | ||
| 外 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 |
常用金属石墨缠绕垫片主要性能参数：
| 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℃) |
| 缠绕垫片小预紧比压 | y=68MPa |
技术标准:
1. 金属缠绕垫片的国外制造标准有:ASME B 16.20, ASME B 16.5, ASME B 16.47 A (B), BS EN109 JIS, 和 NF 等
技术标准:
1. 金属缠绕垫片的国外制造标准有:ASME B 16.20, ASME B 16.5, ASME B 16.47 A (B), BS EN1092, JIS, 和 NF 等
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