Amaphutha avamile angaphezulu kwepayipi lensimbi elishiselwe:

(1) insimbi enezingqimba
Ishubhu lensimbi yodonga elendlalekile lisho ukuthi ingxenye ephambanayo ihlukaniswe yaba izitezi ezimbili, indawo yensimbi eveziwe ebonisa imifantu eqondile yesigaba. Eminye imibukiso yangaphakathi nangaphandle yensimbi ehlehlisiwe noma ephakanyiswe endaweni, ukunikezwa okunezingqimba okuphakanyiswe kungazelelwe, ama-dent noma ukungena nokuphuma endaweni yokushisela.
(2) isibazi esinamathelayo
Isibazi esinamathelayo sepayipi sisho indawo yangaphakathi nengaphandle yesibazi sensimbi egxilile yokunamathela.
(3) izimbobo
Ipayipi embobeni libhekisela endaweni steel tube izimbobo ezikhona.
(4) ukushisela okuvulekile
Ukuvuleka kwepayipi lensimbi elishiselwe kusho ukuqhekeka okude kumashisela ensimbi noma ukukhombisa ingxenye.
(5) Ukushisela i-lap yendawo
Ipayipi lensimbi elishiselwe lisho ingxenye yangaphandle yepayipi lensimbi elethulela ingxenye ye-arc weld.
(6) Umsele wokushisela
Pipe welding groove kuyinto surface engaphandle ipayipi steel kwenzeka ngokusebenzisa inkatho weld eside.
(7) ukuwa kwe-welding
Ukugoqa kwepayipi lensimbi elishiselwe kubhekisela endaweni engaphandle yamathambo ensimbi eshiselwe abonisa emseleni omude, lapho ingaphezulu lemiphetho ye-convex ehambisanayo.
(8) ukususwa kwamalunga epayipi
Steel tube dislocation ngokuhlanganyela libhekisela ensimbi ipayipi weld, kwenzeka isenzakalo esigxamalazayo phezulu naphansi.