GB/T 19066.1-2020 in English
VALIDComposite wave-serrated metal gaskets for pipe flanges—Part 1:PN designated
- Issued on:2020-11-19
- Implemented on:2021-06-01
- File Format:PDF
- Delivery:Via email within 1~3 business days
$243.00
| Standard No: | GB/T 19066.1-2020 |
| Document status: | VALID |
| Title in English: | Composite wave-serrated metal gaskets for pipe flanges—Part 1:PN designated |
| Title in Chinese: | 管法兰用金属波齿复合垫片 第1部分：PN系列 |
| Language: | English |
| File Format: | Electronic (PDF) |
| Delivery: | Via email within 1~3 business days |
| Issued on: | 2020-11-19 |
| Implemented on: | 2021-06-01 |
| ICS Classification: | 23.040.60-Flanges, couplings and joints |
| Chinese Classification: | J15-Pipeline fittings |
| Professional Classification: | GB-National Standard |
| Related Keywords: | composite wave-serrated metal gaskets
pn series metal skeleton materials use temperature metal skeleton pipe flanges locating ears |
| Related Topics: | How to use the wave plate
GB/T19066.1-2008 Wave gasket GB/T 19066.1 GB/T 19066.1-2003 GB/T 19066.1-2008 GB/T 19066.1-2020 Heat exchanger corrugated composite gasket Corrugated composite gasket for heat exchanger Corrugated gasket inspection Corrugated pad marking method |
《GB/T 19066.1-2020管法兰用金属波齿复合垫片 第1部分：PN系列》由TC237（全国管路附件标准化技术委员会）归口，主管部门为中国机械工业联合会。
Introduction
Standard Evolution and Technological Innovation
GB/T 19066.1-2020 replaces the 2008 and 2003 versions of the standard. The main technical changes include:
| Technical Dimensions | 2003/2008 Edition | 2020 Edition |
|---|---|---|
| Scope of Application | Includes Class series | Only retains PN series |
| Metal skeleton materials | Use temperature not specified | 10 new alloy materials and temperature limits |
| Structural parameters | No recommended value | Specified key parameters such as corrugation depth 0.5-1.0mm |
Core technical requirements
1. Material specifications
The metal skeleton can be made of 12 materials including 304 stainless steel and 316L. The flexible graphite covering layer must meet the following requirements:
- Chlorine content ≤50μg/g
- Maximum operating temperature in oxidizing medium 450℃
- Thermal weight loss at 670℃ ≤4%/h
2. Key dimensional tolerances
| Nominal size DN | Inner diameter deviation (mm) | Thickness deviation (mm) |
|---|---|---|
| ≤1000 | ±1.0 | 2.5±0.3 |
| >1000 | ±1.5 | 3.2±0.4 |
Implementation suggestions
Selection guide
Select material combination according to medium characteristics:
- Acid environment: Priority is given to Hastelloy C276 skeleton
- High temperature conditions: 310 stainless steel (≤800℃) or IN800 (≤900℃)
Installation precautions
The gasket with locating ears (Type C) should ensure:
- DN≤1000 uses 2 locating ears
- The center distance tolerance of the locating ears is ±1.0mm
- The bolt preload is controlled at 45MPa
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