Pob zeb pw tsaug zog yog ib qho tseem ceeb ntawm cov khoom siv railway, thiab nws kuj yog ib qho tseem ceeb ntawm cov khoom siv cement nrog cov khoom siv loj thiab siv hauv Suav teb. Yav dhau los, Tuam Tshoj txoj kev tsheb ciav hlau cov neeg pw tsaug zog tau siv cov ntoo pw tsaug zog uas ua los ntawm cov ntoo zoo, vim tsis muaj cov khoom siv ntoo hauv Suav teb, los ntawm txoj kev npaj thib ob tsib xyoos (1958-1962) tau tsim muaj ntau tus neeg pw tsaug zog. Hauv 50 xyoo dhau los, nrog kev txhim kho txuas ntxiv ntawm Tuam Tshoj txoj kev tsheb ciav hlau kev tsim kho thiab kev xav tau ntawm kev kub ceev thiab hnyav tsheb ciav hlau, raws li ib qho ntawm cov khoom siv tseem ceeb hauv kev tsheb ciav hlau, cov khoom siv pob zeb prestressed tau hloov kho tas li, cov txheej txheem ntawm cov pob zeb prestressed. Sleepers tau dhau los ua ntau dua thiab zoo meej, cov cuab yeej siv ntawm cov pob zeb pw tsaug zog thiab txoj kev tu tshuab thiab cov cuab yeej txhawb nqa tau dhau los ua qhov zoo tshaj plaws, yog li Tuam Tshoj tus prestressed qhob sleepers tsis tsuas yog nyob rau hauv lub forefront ntawm lub ntiaj teb no nyob rau hauv cov nqe lus ntawm ntau lawm thiab tso kom muaj nuj nqis, tab sis kuj nyob rau hauv cov khoom qauv kev ua tau zoo, ntau lawm technology thiab cov khoom theem, Cov khoom zoo thiab lwm yam tau maj mus txog lub thoob ntiaj teb advanced theem.
Raws li xyoo 2009, ze li ntawm 400 lab tus neeg pw tsaug zog ntawm ntau hom (xws li rab rawg sleepers, choj sleepers, wide sleepers, local railway and special line sleepers, etc.) tau tsim nyob rau hauv Suav teb. Tag nrho cov kev khiav hauj lwm mileage ntawm Tuam Tshoj txoj kev tsheb ciav hlau yuav nyob ze li ntawm 90, 000 km, thiab tag nrho cov neeg pw tsaug zog ntawm txoj kab tsheb ciav hlau yuav muaj txog li 200 lab vim cov khoom siv kho dua tshiab thiab hloov tas li. Muaj ntau tshaj li 40 lub tuam txhab ua vaj tse ruaj khov nyob hauv lub tebchaws, thiab muaj ntau qhov chaw hauv ncoo ua yards uas tau los ua kom haum rau kev tsim kho cov kab tshiab, nrog rau txhua xyoo muaj peev xwm ntau dua 20 lab. Raws li kev tsim kho cov kab tshiab thiab cov kev xav tau ntawm kev kho dua tshiab thiab kev saib xyuas cov kab qub, qhov kev thov txhua xyoo rau cov pob zeb pw tsaug zog yog kwv yees li 10 lab, thiab txawm hais tias tag nrho cov khoom siv ntawm Tuam Tshoj cov pob zeb pw tsaug zog ua lag luam tshaj qhov xav tau, kev faib tawm tsis tsim nyog. Tsis tas li ntawd, raws li kev xav tau ntawm kev pab cuam nyiaj txiag txawv teb chaws thiab kev lag luam thiab kev lag luam, Tuam Tshoj tau pab Tanzania, Mongolia thiab lwm lub teb chaws los tsim thiab tsim cov chaw tsim khoom hauv tsev. Saib rov qab los ntawm keeb kwm ntawm txoj kev loj hlob ntawm cov pob zeb pw hauv Suav teb, nws tuaj yeem muab faib ua peb theem.
Thawj theem yog xyoo 1958-1980, uas yog theem ntawm kev txhim kho kev vam meej thiab kev siv cov pob zeb ua kom muaj zog. Cov theem no yog ua raws li kev txhim kho yav dhau los ntawm ntau hom kev ua vaj tsev pw tsaug zog, kev sib koom ua ke, kev siv ob qho sib txawv prestressed steels, uas yog, txoj kab uas hla ntawm 3 hli ntawm high-strength carbon steel hlau (tag nrho ntawm 36 sleepers) thiab txoj kab uas hla ntawm 8.2 hli ntawm high-strength tshav kub-kho low-alloy steel tuav (tag nrho ntawm 4 pw tsaug zog), tus nqi zog yog qhov pib zoo tib yam, cov pob zeb muaj zog qib zoo ib yam li C50, cov qauv pw tsaug zog hu ua S69 ( hlau sleepers) thiab J69 (steel sleepers), tom qab renamed S-1 thiab J-1 hom, collectively hu ua I. hom sleepers, ntxiv rau ntau yam ntawm prestressed steel tuav, lwm yam nyob rau hauv cov nqe lus ntawm Sab nraud qhov ntev, tensile quab yuam, qhob qib lub zog, kev txhim kho cov txheej txheem, cov khoom siv ntawm cov neeg pw tsaug zog yog qhov zoo ib yam, thiab cov txheej txheem ntau lawm nyob rau theem no feem ntau yog kev sib koom ua ke, kev ua haujlwm ntau lawm tsis siab, thiab kev siv zog ntawm cov neeg ua haujlwm loj. Qhov thib ob theem yog 1981-1995, uas yog theem ntawm kev txhawb nqa daim ntawv thov hom II hauv ncoo.
Lub prestressed steel ntawm hom II hauv ncoo yog lub siab-lub zog carbon siab yoj hlau hlau nrog ib txoj kab uas hla ntawm 3 hli (tus naj npawb yog nce piv rau hom kuv pw tsaug zog, tag nrho ntawm 44 pw tsaug zog) thiab ib txoj kab uas hla ntawm 10 hli high-strength kev kho cua sov. low-alloy steel bar (tag nrho ntawm 4 tus neeg pw tsaug zog rau ib tus neeg pw tsaug zog), feem hu ua S-2 thiab J-2 hom, vim yog siv cov dej txo tus neeg sawv cev, cov qib pob zeb muaj zog tau nce mus rau C60, Qhov siab ntawm ntu ntu, tensile quab yuam, thiab lwm yam tau nce ntau dua li hom kuv pw tsaug zog, thiab cov khoom siv ntawm cov neeg pw tsaug zog tau ntxiv dag zog. Nyob rau theem no, cov txheej txheem ntau lawm ntawm cov pob zeb pw tsaug zog kuj tau zoo heev, ua ntej ntawm tag nrho cov, nws yog kiag li tsim los ntawm cov flow unit txoj kev ntawm tus choj crane tsiv qauv mus rau tus qauv yog feem ntau cov menyuam rooj kis tau tus mob, thiab lub crane tsuas yog siv. raws li ib tug txaus unit - kis tau tus mob txoj kev nqa tus qauv tawm thiab mus rau hauv lub tu tank. Nyob rau theem no, txhawm rau ua kom cov khoom lag luam ruaj khov, kev lag luam pw tsaug zog tau ua tiav zoo hauv cov khoom huv si, kev tshawb fawb qib, ntsuas qhov tseeb, sib xyaw ua ke, qhov kub thiab txias tsis siv neeg kho, tsis siv neeg tswj ntawm chav kho kub thiab prestressed steel bar nro, thiab txhim kho cov txheej txheem khoom siv.
Qhov thib peb theem yog kev txhim kho tom qab xyoo 1995 txog tam sim no, uas yog theem ntawm kev thov thiab txhawb nqa hom III hauv ncoo thiab txhim kho hom II hauv ncoo. Cov theem no yog thawj zaug los txhim kho qhov zoo ntawm hom II hauv ncoo, hauv cov khoom tsim, kev siv 7mm txoj kab uas hla thiab txoj kab uas hla 6.25mm kauv rib steel hlau, tsim thiab tsim cov tshiab hom II hauv ncoo, thaum maj mam txhawb kev thov ntawm hom III hauv ncoo ntawm cov kab tseem ceeb, kom ua tau raws li cov kev xav tau ntawm Tuam Tshoj txoj kev tsheb ciav hlau hnyav-load ceev-up txoj kev loj hlob, theem no kuj ua tiav tsim 500KN pw tsaug zog zoo li qub load kuaj tshuab thiab pw tsaug zog sab nraud qhov tshwj xeeb ntsuas ntsuas, txhawm rau txhim kho cov neeg pw tsaug zog zoo. muab lub zog lav dua.