GB/T 18749-2019 in English
VALIDSpecification for chemical-resistant ceramic tower packings
- Issued on:2019-12-10
- Implemented on:2020-11-01
- File Format:PDF
- Delivery:Via email within 1~3 business days
$359.00
《GB/T 18749-2019耐化学腐蚀陶瓷塔填料技术条件》由TC162（全国非金属化工设备标准化技术委员会）归口，主管部门为中国石油和化学工业联合会。
Introduction
Interpretation of the National Standard of the People's Republic of China GB/T 18749—2019
This standard specifies the shape, size and stacking number, size requirements, physical and chemical performance requirements, chemical composition, test methods, and acceptance contents of chemical corrosion-resistant ceramic tower packing.
| Parameters | Technical indicators | Test methods |
|---|---|---|
| Compressive strength | - Ring packing: ≥4.4 N/mm - Saddle packing: ≥4.4 N/mm - Continuous ring packing: ≥20.0 MPa - Corrugated packing: According to different specific surface areas, the range is between 0.5 and 3.0 MPa | Use vernier caliper to measure the size and use testing machine for loading test |
| Water absorption | - Fine porcelain packing: ≤0.5% - Porcelain packing: ≤3% | Tested in accordance with HG/T 3210 standard |
| Acid resistance | - Fine porcelain filler: ≥99.8% - Porcelain filler: ≥99.7% | Evaluated by chemical test methods |
Background of standard formulation and analysis of technological evolution
This standard replaces GB/T18749-2008. The main revisions include:
- Modify the wall thickness deviation requirements: refine the tolerance range according to different specifications (such as DN6~DN25, etc.)
- Add compressive strength indicators: add specific requirements for interlocking fillers and corrugated fillers
- Optimize size measurement methods: emphasize the use of high-precision vernier calipers, and clarify the maximum and minimum deviation ranges
Implementation suggestions
To ensure the effective implementation of the standard, it is recommended that:
- Production units strictly control quality according to dimensional tolerances and performance indicators
- When purchasing, explicitly require suppliers to provide test reports that comply with GB/T 18749
- Periodically sample and inspect fillers, especially those used in high temperature and high corrosion environments
Loading PDF document...
Error loading PDF. Please make sure the file is valid and try again.
We also recommend
-
GB/T 7991.1-2021 in English
Test method of viterous and porcelain enamels—Part 1：Determination of resistance to alkaline liquids
2021-12-31 -
GB/T 23711.1-2019 in English
Test method for pressure vessels lined with plastics—Part 1:Spark testing
2019-12-10 -
GB/T 33488.1-2017 in English
Test method of pressure equipments of thermoplastics welded for chemicals -- Part 1: General requirements
2017-02-28 -
GB/T 35974.1-2018 in English
Plastics and plastic lining pressure vessels—Part 1: General requirements
- -
GB/T 41312.1-2022 in English
Test method for measurement of the permeability of chemical equipment—Part 1:Graphite and lining equipment
2022-03-09
