Isolation joints are mainly used between gas transmission and distribution pipelines and gas pressure regulation, metering, storage and other equipment, and their main function is to isolate each section of gas transmission and distribution pipelines, equipment and pipelines, protect them from chemical corrosion, and extend the service life of pipelines and equipment.
Isolation flange products comply with SY/T0516-1997 "Insulation flange design technical regulations" standard.
Product features:
1. It has the electrical insulation properties required by the buried pipeline electrical corrosion protection project.
2, it can work reliably under the temperature and pressure required by the pipe transport medium for a long time, and has sufficient strength and sealing performance.
3. Reasonable structure, convenient assembly, disassembly and replacement of parts.
Type | Specification | A | B | L | Steel pipe material |
DN25-25 | DN25 | 34 | 4 | 250 | Steel Pipe 20 |
DN25B-25 | 32 | 4 | 250 | ||
DN40-25 | DN40 | 48 | 4 | 300 | |
DN50-25 | DN50 | 60 | 4 | 350 | |
DN50B-25 | 57 | 4 | 350 | ||
DN65-25 | DN65 | 76 | 5 | 350 | |
DN80-25 | DN80 | 89 | 5 | 400 | |
DN100-25 | DN100 | 114 | 5 | 400 | |
DN100B-25 | 108 | 5 | 400 | ||
DN125-25 | DN125 | 140 | 6 | 500 | |
DN125B-25 | 133 | 6 | 500 | ||
DN150-25 | DN150 | 168 | 7 | 500 | |
DN150B-25 | 159 | 7 | 500 | ||
DN200-25 | DN200 | 219 | 7 | 500 | |
DN250-25 | DN250 | 273 | 8 | 800 | |
DN300-25 | DN300 | 325 | 8 | 800 | |
DN350-25 | DN350 | 356 | 8 | 900 | |
DN350B-25 | 377 | 8 | 900 | ||
DN400-25 | DN400 | 406 | 8 | 900 | Steel Pipe 16MnR |
DN400B-25 | 426 | 8 | 900 | ||
DN450-25 | DN450 | 457 | 8 | 900 | |
DN450B-25 | 480 | 8 | 900 | ||
DN500-25 | DN500 | 508 | 10 | 900 | |
DN500B-25 | 530 | 10 | 900 | ||
DN600-25 | DN600 | 610 | 10 | 1000 | |
DN600B-25 | 630 | 10 | 1000 | ||
DN700-25 | DN700 | 711 | 10 | 1200 | |
DN700B-25 | 720 | 10 | 1200 | ||
DN800-25 | DN800 | 813 | 12 | 1300 | |
DN800B-25 | 820 | 12 | 1300 |
