Buying removable jackets: a short checklist
Jackets are custom industrial parts. Supplier qualification, technical data and after-sales support all need checking before price is compared.
Removable jackets are used across coal chemical and petrochemical plant, where equipment has to be insulated but also opened for maintenance. Because they are made to order, combustion class, thermal performance and general workmanship depend on the supplier's process control rather than on a catalogue number.
Combustion performance of the insulating material is classified under GB 8624, with the pipe insulation and non-metallic equipment categories being the relevant entries. Production and sale also fall under the Product Quality Law, so documentation is part of the product.
Three things to verify
- Business licence, production scope and material certificates for the batch
- Third-party test reports for combustion class and thermal conductivity, with the report number traceable
- Dimensions and fixing method confirmed against the actual equipment, not only the drawing
- A stated service life and a repair route for damaged sections
Reference note. Figures and standard references are indicative and do not replace the project specification, the current edition of the standard, or product test reports for the specific supply.