①  Clean the hole and the surface of the sealant, remove the scattered debris, dust, oil, frost and wax, and keep it dry.
②  According to the test report requirements of relevant standards, fill the backing material to a small thickness, and leave enough thickness for the application of sealant to obtain considerable fire aging
③  Use of sealant: In order to achieve the required fire protection effect, please use it at the specified thickness and ensure that the sealant is in contact with the surface of the pipe substrate to obtain greater adhesion.
④  Smooth the fireproof sealant: In order to achieve better results, please smooth the surface immediately. Excessive cement can be removed with tools and water before hardening.
⑤  After the completion of the construction, please keep the interface intact for 48 hours to complete the maintenance procedures.
⑥  If necessary, install road signs at a conspicuous position next to the fire-proof seal as an identification mark for future maintenance.