Hauv kev siv tiag tiag, txhawm rau ua kom tsis muaj steel hlau yeeb nkab fittings (stainless steel luj tshib, stainless hlau tees, stainless hlau loj thiab me taub hau, stainless hlau flanges, thiab lwm yam) zoo nkauj dua thiab ruaj, muaj ntau yam kev kho deg. Cia peb siv stainless hlau lub luj tshib saum npoo kev kho mob ua piv txwv los qhia qee txoj kev kho saum npoo.