Bayanin samfur:
Ana amfani da samfurin a cikin tanderun jiyya daban-daban na zafi mai iya sarrafawa, don gujewa tuntuɓar sakamakon ƙonawa ko don gujewa lalata gas ɗin tanderu zuwa abubuwan dumama.Tsarin (juyin elding kona ko makamashin lantarki) ana saka shi a cikin bututun ƙarfe mai jujjuyawa kuma a bar adadin zafi ya haskaka ta bangon bututu.Ana kiran wannan na'urar azaman bututun dumama.

Electrothermal hita tube zai rufe dumama kashi a cikin jaket, bayan electrify da zafi sama, zafi ne kai tsaye radiated zuwa tanderun liner da workpiece da za a mai tsanani da bushe.Ana amfani da bututun dumama zafi a cikin tanderu tare da kiyaye jita-jita da lalata, kamar tanderu mai ci gaba, tanderun nadi, tanderun rami.

Amfanin tube:
Ana iya tabbatar da ikon sarrafa sauti a cikin tanderun wuta.
Kula da zafin jiki, tarawa da kiyayewa suna da dacewa sosai kuma yana iya zama da sauƙin rufewa.
An kara girman kumbon murhu kuma an inganta kayan aiki saboda babu tukunyar tukwane
Ƙarfin ƙarfin dumama da ingantaccen aiki
An ajiye kayan ƙarfe mai jujjuyawa.
Kayan tube:
Abubuwan da ake amfani da su na electrothermal gami da bututun dumama yakamata su kasance mafi girman juriya.Juyin kashi na galvanothermy yana da girma.Saboda an saka bututun dumama a cikin daji, tsarin watsa zafi ya bambanta da na nau'in dumama nau'in budewa.Garkuwar zafi tana da girma.Dole ne a sarrafa zafin jiki a lokacin hawan zafi, don guje wa balaguron zafin jiki na element.
Lokacin da aka rufe bututu mai zafi da zafi, yanayin zafin jiki na kayan dumama ya fi girma fiye da zafin jiki na murhu da 100 C ~ 150 C. Don haka ana buƙatar nazarin zafin jiki na tanderun da yanayin zafin tanderu.Zaɓi kayan dumama daidai.
Bututun dumama da kamfanin gongtao ke samarwa yakan yi amfani da Cr20Ni80, Cr25A15, Cr21A16Nb, Cr27A17Mo2 ect.