Nezvekucheneswa kweoiri casing bare pombi:
Mapombi emafuta ega ega anocheneswa uye anosvika pachigadzirwa chekugadzira.Pamberi pekugadzirwa kwepamutemo, tsvina yemafuta, ivhu reraimu, oxide scale rust uye yakare yakanamwa mukati nekunze kwepaipi inofanira kucheneswa.Nzira dzekubvisa ngura dzinosanganisira manual, mechanical, spray, pickling, etc. Kare, nzira yekupfapfaidza yainyanya kushandiswa kubvisa ngura yemapaipi eokisijeni.Zvino, pickling inoshandiswa kubvisa ngura, uye mhedzisiro yacho yakanaka kwazvo.Paunenge uchichenesa nemhepo yakamanikidzwa kana mvura, kukurumidza kwemvura kana simba remhepo rinogona kusvika 15x20m / s, iyo inogona kubvisa tsvina pamusoro pepombi, asi haigoni kubvisa rust layer, oxide scale, burr, welding tumor uye kukanda bundu.