Umehluko phakathi kosayizi we-SC kanye ne-DN yamapayipi ensimbi:

I-1.SC ngokuvamile ibhekisela epayipini lensimbi elishiselwe , ulimi lwe-STEEL CONDUIT, i-shorthand yezinto ezibonakalayo.

2. I-DN ibhekisela kububanzi obujwayelekile bepayipi lensimbi, okuyinkomba yobubanzi bepayipi yepayipi.

3. Amapayipi ensimbi ahlukaniswe abe amapayipi ensimbi abandayo kanye namapayipi ensimbi afakwe emanzini ashisayo.Amapayipi ensimbi abandayo avaliwe, kanti lawa asegqugquzelwe wuhulumeni ukuze asetshenziswe isikhashana.Ngeminyaka yawo-1960 kanye nawo-1970, amazwe athuthukile emhlabeni aqala ukwakha izinhlobo ezintsha zamapayipi kanye namapayipi avaliwe avaliwe.UMnyango Wezokwakha kanye nezinye izingqongqoshe ezine namakhomishana nabo bakhiphe umqulu ocacisayo ukuthi ipayipi likathayela lizovalwa njengepayipi elihambisa amanzi kusukela ngo-2000. Ipayipi likathayela alivamisile ukusetshenziswa emapayipini amanzi abandayo asendaweni entsha yokuhlala.Amapayipi amanzi ashisayo kweminye imiphakathi asebenzisa amapayipi anathayela.Amapayipi ensimbi afakwe emanzini ashisayo asetshenziswa kakhulu ekuvikelweni komlilo, amandla kagesi kanye nemigwaqo emikhulu.
Ukwandisa ulwazi:

Umthelela wokusebenza

(1) Ikhabhoni;ukuphakama kwekhabhoni, kuyanda ubulukhuni bensimbi, kodwa kubi kakhulu ipulasitiki nokuqina kwayo.

(2) Isibabule;kungukungcola okuyingozi ensimbi.Uma insimbi enokuqukethwe okuphezulu kwesibabule ingaphansi kokucutshungulwa kwengcindezi ezingeni lokushisa eliphezulu, kulula ukuba brittle futhi ngokuvamile ibizwa ngokuthi i-hot brittleness.

(3) I-Phosphorus;inganciphisa kakhulu i-plasticity nokuqina kwensimbi, ikakhulukazi emazingeni okushisa aphansi, lesi simo sibizwa ngokuthi i-cold brittleness.Ensimbi yekhwalithi ephezulu, isulfure ne-phosphorus kufanele ilawulwe ngokuqinile.Kodwa-ke, kusukela komunye umbono, ukufakwa kwesulfure ephakeme ne-phosphorus ensimbi ephansi ye-carbon kungenza kube lula ukusika, okuzuzisa ukuthuthukisa amandla ensimbi.

(4) IManganese;ingathuthukisa amandla ensimbi, ingenza buthaka futhi iqede imiphumela emibi yesibabule, futhi ingathuthukisa ukuqina kwensimbi.Insimbi ephezulu ye-alloy (insimbi ephezulu ye-manganese) enokuqukethwe okuphezulu kwe-manganese inokumelana okuhle nokugqokwa.Nezinye izici zomzimba.

(5) I-silicone;kungandisa ubulukhuni bensimbi, kodwa ipulasitiki nokuqina kuncipha.Insimbi esetshenziswa kubunjiniyela bukagesi iqukethe inani elithile le-silicon, elingathuthukisa izakhiwo ezithambile zikazibuthe.

(6) I-Tungsten;ingathuthukisa ubulukhuni obomvu namandla okushisa ensimbi, futhi ingathuthukisa ukumelana nokugqoka kwensimbi.

(7) I-Chromium;ingathuthukisa ukuqina nokumelana nokugqoka kwensimbi, futhi ingathuthukisa ukumelana nokugqwala nokumelana ne-oxidation yensimbi.

Ngokumelana nokugqwala okujwayelekile, amapayipi ensimbi ajwayelekile (amapayipi amnyama) anezinsimbi.Amapayipi ensimbi enziwe ngensimbi ahlukaniswe abe i-hot-dip galvanizing kanye nezinc yensimbi kagesi.Isendlalelo se-galvanizing dip esishisayo siwugqinsi, futhi izindleko ze-electro-galvanizing ziphansi, ngakho-ke kukhona ipayipi lensimbi.