Sealing materials for gas and water supply as well as water heating systems - Non-hardening jointing compounds and polytetrafluoroethylene (PTFE) tapes for metallic threaded joints in domestic installations— 4 стр.
Sealing materials for gas and water supply as well as water heating systems - Non-hardening jointing compounds and polytetrafluoroethylene (PTFE) tapes for metallic threaded joints in domestic installations— 4 стр.
