I-billet esetyenziswe kwimveliso yeepayipi zetsimbi ibizwa ngokuba yi-tube billet. Ngokuqhelekileyo umgangatho ophezulu (okanye i-alloy) intsimbi ejikelezayo eqinileyo isetyenziswa njenge-tube billet. Ngokweendlela ezahlukeneyo zokuvelisa, iibhubhu ezingenamthungo zineebhilidi ezenziwe ngeengots zetsimbi, iibhilidi eziqhubekayo zokuphosa, iibhilidi zokubumba, iibhilidi eziqengqelekayo kunye ne-centrifugally cast hollow billets.Njengoko umgangatho we-tube billet unquma kakhulu umgangatho we-tube yensimbi engenamthungo, ukulungiswa i-tube billet ibaluleke kakhulu.

Ngokuqhelekileyo, i-tube engenanto ibhekisela kwi-tube billet ejikelezayo. Ubungakanani be-tube billet ejikelezileyo imelwe ngububanzi bentsimbi ejikelezayo eqinile. Ukulungiswa kwe-tube billet kubandakanya ukukhethwa kwemodeli ye-tube billet kunye neenkcukacha, ukubunjwa kweekhemikhali kunye nokuhlolwa kwesakhiwo, ukuhlolwa kwesiphako somgangatho kunye nokucoca, ukusika, ukugxila, njl.
Inkqubo yokuvelisa i-billet yentsimbi engenamthungo yile ilandelayo:

Ukwenziwa kwentsimbi-Ukwenziwa kwentsimbi-Intsimbi evulekileyo yeziko (okanye iSimbi seSiko soMbane kunye neNtsimbi yokuVuthela iOksijini)

A) Ukuhlelwa kweebhilidi zetyhubhu ezingenamthungo

I-billet ye-tube yensimbi engenamthungo ingahlelwa ngokwendlela yokucubungula, ukubunjwa kweekhemikhali, indlela yokwenza, iimeko zokusetyenziswa, njl njl.
Ngokomzekelo, ngokwendlela yonyango, inokwahlulwa ibe yi-billet yentsimbi yombhobho wombane, i-billet yombhobho wokuguqula insimbi kunye ne-electroslag steel pipe billet; ngokwendlela yokwenza, inokwahlulwa ibe yi-ingot yentsimbi, i-billet yombhobho eqhubekayo, i-billet yombhobho engumbhobho, i-billet yombhobho eqengqelekayo kunye ne-centrifugal casting hollow tube. Ngokokwakheka kweekhemikhali, inokwahlulwa ibe yi-carbon steel pipe billet, i-alloy steel pipe billet, i-stainless steel pipe billet kunye ne-corrosion-resistant alloy pipe billet; I-Grilling kunye ne-geological drilling tube billets, iibhilithi zetyhubhu zezityalo zesichumiso, iibhilithi zetyhubhu ezithwele, kunye nezinye iibhilithi zetyhubhu ezinenjongo eyodwa.

B) Ukukhethwa kweebhilidi zetyhubhu ezingenamthungo

Ukukhethwa kweebhilidi ze-tube zensimbi ezingenamthungo kubandakanya ukukhethwa kwamabakala ensimbi, iinkcukacha, iindlela zokunyibilikisa kunye neendlela zokwenza.
Khetha amabakala ensimbi, iindlela zokucubungula kunye neendlela zokwenza ngokwemigangatho yemveliso okanye ulandele iimeko zobugcisa. Ukukhethwa kobukhulu be-billet kusekelwe ekufumaneni ubungakanani be-billet obuhambelanayo kwitafile ejikelezayo ngokobukhulu bombhobho wensimbi.

Ngokuqhelekileyo, izixhobo zemibhobho yensimbi engenamthungo zisebenzisa i-converter converter ephuculweyo okanye intsimbi yesithando sombane ukwenzela ukuqhubeka nokuphosa iibhilidi ezijikelezayo.
Xa ibakala lensimbi okanye inkcazo ayinakuphoswa ngokuqhubekayo, intsimbi etyhidiweyo okanye i-centrifugal casting yenziwe ibe yi-billet ejikelezayo. Xa ubukhulu betyhubhu engenanto ayinakuhlangabezana neemfuno zomlinganiselo wokunyanzeliswa, ubukhulu obukhulu betyhubhu obungenanto bunokukhethwa kwaye bugoqwe okanye bufakwe ukuba bube ngumbhobho ongenanto ohlangabezana neemfuno zobukhulu. Ifomyula yokubala yomlinganiselo woxinzelelo ngolu hlobo lulandelayo: K=F, 1F apho i-K isilinganiselo soxinzelelo; F--indawo ye-cross-sectional ye-tube engenanto, mm; F--indawo enqamlezileyo yombhobho wensimbi, mm.

Xa kukho iimfuno ezingqongqo malunga nokufana kwe-tube engenanto yokubunjwa, umxholo wokubandakanywa okanye umxholo wegesi, i-tube blank enyibilikiswe yi-electroslag okanye i-vacuum degassing furnace isetyenziswa ngokubanzi.