1. Ho tloha ho honyela haphala ea tšepe e sa hloekang li-castings li feta haholo ho fokotseha ha tšepe e entsoeng ka tšepe, e le ho thibela ho fokotseha le ho fokotseha ha li-castings, boholo ba mehato e sebelisoang ts'ebetsong ea ho lahla ke risers, tšepe e batang le lithuso ho finyella ho tiea ho tsoelang pele.

2. E le ho thibela shrinkage, shrinkage, porosity le crack defects ea tube ea tšepe e sa hloekang, botenya ba lerako bo lokela ho ba bo ts'oanang, ho qoba mehaho e bohale le e nepahetseng, ho eketsa lisebelisoa tsa lehong ho lehlabathe le bōpang, eketsa coke ho ea bohareng, 'me u sebelise sekoti le lehlabathe la oli ho ntlafatsa tumello le bokhoni ba ho hema ba lehlabathe kapa mokokotlo.

3. Ka lebaka la mokelikeli o futsanehileng oa tšepe e qhibilihisitsoeng, e le ho thibela karohano e batang le ho lahla ho sa lekaneng, botenya ba lerako la ho lahla ha boa lokela ho ba ka tlase ho 8mm;ho lahlela ho omileng kapa ho chesa ho lokela ho eketsa mocheso oa mocheso ka nepo, ka kakaretso 1520 ~ 1600℃.Hobane mocheso oa ho lahla o phahame, tekanyo ea mocheso o phahameng o phahame, nako ea ho boloka metsi e telele, 'me metsi a ka ntlafatsoa.Leha ho le joalo, haeba mocheso o phahame haholo, o tla baka mathata a kang lithollo tse mahoashe, mapetsong a chesang, li-pores le lehlabathe le khomarelang.