Nws cov txheej txheem tsim khoom tsis yog qhov nyuaj heev, tab sis txhua kauj ruam txiav txim siab nws lub neej kev pabcuam. Thawj cov chaw tsim tshuaj paus ua ntej txhaj tshuaj blasting kom ua tiav Sa2.5 qib xeb tshem tawm, huv si ntxuav cov yeeb nkab phab ntsa ntawm oxide nplai thiab impurities. Tom qab ntawd, cov yeeb nkab yog cua sov ntawm qhov kub tsis tu ncua uas siv qhov nruab nrab zaus, ib txhij txheej nrog ob - txheej tiv thaiv - cov khoom siv corrosion. Tom qab dej txias thiab shaping, liab qab weld pob qij txha yog sab laug. Thaum kawg, txhua lub yeeb nkab tau dhau los kuaj cov pa taws. Tsis muaj cov txheej txheem tsis tsim nyog thiab ib qho - txheej txheej, nws tsis tshua muaj tev lossis flaking thaum tsim kho thiab tuav, thiab tuaj yeem tiv taus qhov cuam tshuam tau yooj yim thaum ntawm - qhov chaw hoisting thiab landfilling.
Lub hom phiaj hais lus, nws tsis yog tag nrho - nyob ib ncig ntawm cov khoom siv los tiv thaiv - cov yeeb nkab; nws qhov zoo thiab qhov tsis zoo yog qhov sib txawv, thiab tsis tas yuav tsum ua kom pom qhov tsis txaus ntseeg nws qhov kev ua tau zoo thaum yuav khoom. Nws qhov zoo yog yooj yim pom. Ua ntej, nws tus nqi - ua tau zoo heev. Rau tib qhov tshwj xeeb, nws raug nqi li 20% tsawg dua li cov pa 3PE tiv thaiv -corrosion steel kav. Rau me me mus rau nruab nrab- cov haujlwm me me, kev yuav khoom ntau tuaj yeem txuag tau nyiaj ntau heev. Cov khoom siv polyethylene muaj qhov nqus dej tsawg heev, dej ruaj khov thiab cov khoom siv oxygen, thiab tiv taus cov kua qaub thiab alkali corrosion niaj hnub. Nyob rau hauv nruab nrab av ib puag ncig, nws yuav siv tau stably rau kwv yees li peb caug xyoo tsis muaj teeb meem. Ntxiv mus, cov khoom siv yeeb nkab muaj qhov zoo toughness thiab tsis yooj yim rau brittleness nyob rau hauv qis - qhov kub thiab txias, ua rau nws haum rau sab nraum zoov faus kev tsim kho nyob rau hauv sab qaum teb cheeb tsam.
Nyob rau hauv cov nqe lus ntawm daim ntawv thov scenarios, vim nws zoo heev kev ua tau zoo thiab kev lag luam, 2PE anti-corrosion steel kav yog tsim nyog rau faus pipeline tej yaam num nyob rau hauv tej av ib puag ncig. Cov ntawv thov tshwj xeeb suav nrog cov dej faus dav dav thiab cov dej ntws tawm, kev ua liaj ua teb irrigation thiab cov kav dej, cov roj av thiab cov pa xa mus rau hauv nroog thiab cov cua sov hauv nroog, nrog rau kev tsim kho vaj tse xws li cov kav dej thiab cov kav dej hauv cov av ib puag ncig.
Cov txheej txheem tsim khoom yog thawj zaug ntawm cov yeeb nkab hauv paus (seem tsis muaj seam, ncaj seam, los yog kauv welded yeeb nkab) mus rau nruab nrab - zaus cua sov thiab sandblasting rau kev tshem tawm xeb. Tom qab ntawd, kub- nplaum nplaum yog siv, ua raws li tam sim ntawd los ntawm extrusion los yog sab- winding ntawm siab- polyethylene ntom, fused ob txheej ua ke nyob rau hauv ib tug molten lub xeev kom nruj rau cov yeeb nkab phab ntsa. Muaj ob txoj hauv kev ua haujlwm tseem ceeb: kauv winding thiab ncig pwm txheej. Lub preheating kub ntawm cov yeeb nkab steel feem ntau tswj ntawm 200 thiab 240 degree.
Kev ua lag luam muaj ntau yam khoom siv los tiv thaiv- cov khoom siv yeeb nkab corrosion, ua rau ntau txoj haujlwm poob rau hauv kev xav tsis zoo tias "tus nqi kim dua, zoo dua." Txawm li cas los xij, rau cov kav dej hauv tsev zoo tib yam, nws tsis tas yuav tsum tau hais rau sab saum toj - ntawm - - kab los tiv thaiv - thev naus laus zis. Ob- txheej polyethylene los tiv thaiv- cov yeeb nkab steel yeeb nkab ua rau muaj qhov sib npaug zoo rau cov haujlwm tseem ceeb: txaus los tiv thaiv- corrosion, hnav tsis kam, kev tsim kho yooj yim, thiab tus nqi pheej yig. Txawm hais tias tsis muaj seamless, ncaj seam, lossis cov khoom siv kauv puag yog xaiv, ob npaug - txheej tiv thaiv - xeb tuaj yeem kho tau. Cov yeeb nkab diameters tau sib xws nrog cov ntsiab lus tseem ceeb ntawm DN200 txog DN500, nrog kev xa khoom sai thiab cov txheej txheem kho cov yeeb nkab yooj yim kawg, txo qis ntawm - qhov teeb meem kev tsim kho.
Thaum xaiv cov ntaub ntawv rau ib qhov project, qhov tsim nyog ib txwm muaj ntau dua - cov kev xaiv kawg. Tsis nrhiav kev ua haujlwm tsis tu ncua, tab sis tsuas yog tsom mus rau kev ua haujlwm ntawm kev ua haujlwm, txo kev kho tom qab, thiab tswj hwm cov nqi tsim nyog, qhov no paub tab thiab ruaj khov ob -txheej polyethylene los tiv thaiv- cov yeeb nkab steel yeeb nkab yog qhov kev xaiv zoo thiab muaj kev ntseeg siab rau cov khoom siv engineering.
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