GB/T 29463-2023 in English
VALIDGaskets used in tube-shell heat exchangers
- Issued on:2023-09-07
- Implemented on:2023-09-07
- File Format:PDF
- Delivery:Via email within 5 business days
$679.00
《GB/T 29463-2023管壳式热交换器用垫片》由TC262（全国锅炉压力容器标准化技术委员会）归口，TC262SC5（全国锅炉压力容器标准化技术委员会热交换器分会）执行，主管部门为国家标准委。
Introduction
Analysis of Standard Technology Evolution
This standard integrates and replaces the GB/T29463.1~3-2012 series of standards. The main technical upgrades include:
- Two new product types: metal corrugated composite gaskets and metal toothed combination gaskets
- Nominal diameter range expanded from DN2000 to DN2600
- Added special size series of outer head flange of floating head heat exchanger (+150/200/250mm)
Core Parameter Comparison Table
| Gasket Type | Applicable Pressure (MPa) | Temperature Range (℃) | Thickness Deviation (mm) | Characteristic Coefficient (m/y) |
|---|---|---|---|---|
| Spiral wound gasket | 0.25-6.4 | -196~450 | +0.5/-0.2 | GB/T4622.1 |
| Metal corrugated composite gasket | 0.25-6.4 | -196~450 | +0.4/-0.1 | GB/T19066.1 |
| Metal toothed combined gasket | 0.25-6.4 | -196~450 | +0.4/-0.1 | 4/60.7(Class II) |
Key Manufacturing Requirements
Material Control
- Metal Materials: 6 types of stainless steel including 06Cr19Ni10, with hardness lower than 30HBW of flange sealing surface
- Flexible Graphite: Chlorine content ≤50μg/g, sulfur content ≤800μg/g
- Splicing Requirements: DN≥800 non-metallic gaskets are allowed to overlap at 45° bevel, with a maximum of 4 splicings
Process Control
- The filling tape of the wound gasket needs to be 0.2mm higher than the metal tape
- The flatness deviation of the tooth tip of the corrugated composite gasket is ≤0.8mm/20° arc
- The roughness of the sealing surface of all gaskets is Ra≤3.2μm
Typical application cases
Liquefied natural gas unit: The metal corrugated composite gasket WSF13-900-1.6-6BC was selected to maintain the sealing performance under -162℃ working conditions and passed the NB/T47013.5 penetration test level I acceptance.
Petrochemical hydrogenation reactor: The metal toothed composite gasket GMF53-800-4.0-4BNC was used, and it ran for 8000 hours without leakage under 420℃/6.4MPa conditions.
Loading PDF document...
Error loading PDF. Please make sure the file is valid and try again.
We also recommend
-
GB/T 33920-2025 in English
Test method for flexible graphite sheets
2025-03-28 -
GB/T 10444-2024 in English
Method of type establishment for mechanical seals
2024-09-29 -
GB/T 29035-2022 in English
Test method for flexible graphite ring
2022-12-30 -
GB/T 5894-2015 in English
Terminology of mechanical seal
2015-12-10 -
GB/T 41069-2021 in English
Terminology of rotary joints
2021-12-31
