1.Lapho kusetshenziswa ukuqhuma kwesihlabathi noma ukuchithwa komshini okwenziwa ngesandla, isikali sensimbi esingaphezulu kweipayipi elikhulu lensimbi ivezwa ngokuqondile emoyeni ngenxa yokuxebuka kwesikali se-oxide kusuka epayipini lensimbi elinobubanzi obukhulu.Uma i-primer ingapendiwe ngesikhathi, indawo yepayipi yensimbi enobubanzi obukhulu ingase iphinde igqwale, ethinta ukunamathela kwefilimu yepende.Njengoba upende uyinto ezwela isikhathi, ukusilela emuva kwe-inventory kujwayele ukuphelelwa isikhathi futhi kungavumelekile.Ngakho-ke, izinkomba eziyinhloko zopende ziphinde zihlolwe ngaphambi kokusetshenziswa, futhi imiphumela ihlangabezana nezinga.

I-2.Derusting: Lena inqubo ebalulekile ngaphambi kokumbozwa kwamapayipi ensimbi anobubanzi obukhulu nezingxenye, futhi kuyisihluthulelo samapayipi ensimbi anobubanzi obukhulu.Ukususwa kokugqwala kungathuthukisa ukunamathela kopende wokugqwala, ngaleyo ndlela kwandise impilo yesevisi yamapayipi ensimbi anobubanzi obukhulu.

I-3.Ubuso bepayipi yensimbi enobubanzi obukhulu obucutshungulwa yi-sandblasting, ukudubula ukuqhuma noma inqubo yokuqoqa ihlanzekile ngokuqhathaniswa, futhi isikali se-oxide nokugqwala kuhlanzekile, okuthuthukisa ukunamathela kokugqoka.Uma indawo yokufaka iphathwa ngokungenamibandela ngokuqhunyiswa kwesihlabathi nokuqhunyiswa kwesibhamu, imishini eyenziwa ngesandla ingasetshenziswa ukususa ukugqwala, kodwa izinga lokukhipha ukugqwala liyafinyelelwa.