1. Cov nqe lus them nqi dab tsi koj lees txais rau ERW steel yeeb nkab xa tawm xaj?
Rau ERW steel yeeb nkab xa tawm xaj, peb lees txais cov nqe lus them nqi thoob ntiaj teb kom muaj kev nyab xeeb ntawm ob tog cov nyiaj, suav nrog: T / T (Telegraphic Transfer): 30% them ua ntej, 70% tshuav nyiaj them ua ntej xa khoom; L/C (Letter of Credit): irrevocable tsab ntawv ntawm credit tawm los ntawm lub tuam txhab muaj koob npe nrov, uas yog txoj kev them nyiaj ruaj ntseg tshaj plaws rau kev txiav txim loj; D / P (Cov ntaub ntawv tiv thaiv Kev Them Nyiaj): tus neeg yuav khoom them qhov nyiaj tshuav tom qab tau txais cov ntaub ntawv xa khoom; thiab Western Union/MoneyGram rau me me -batch mus sib hais. Peb kuj tuaj yeem sib tham txog cov nqe lus them nqi raws li tus neeg siv khoom qhov credit thiab kev txiav txim kom ncav cuag kev sib koom tes zoo.
2. Cov ERW steel kav puas tuaj yeem khoov rau hauv cov duab sib txawv?
Yog lawm, ERW steel kav tuaj yeem khoov rau hauv cov duab sib txawv (xws li lub luj tshib, U-cov kav dej, arc- cov kav dej zoo li tus) raws li cov neeg siv khoom xav tau. Txoj kev khoov feem ntau yog ua los ntawm kev siv cov yeeb nkab bender, thiab lub vojvoog dabtsi yog khoov thiab lub kaum sab xis tuaj yeem hloov kho. Nws yuav tsum tau muab sau tseg tias lub vojvoog dabtsi yog khoov ntawm ERW kav yuav tsum tsis txhob me me heev kom tsis txhob tawg los yog deformation ntawm qhov khoov; rau tuab- cov kav dej ERW phab ntsa, kev kho cua sov yuav tsum tau ua ua ntej khoov kom txo tau qhov brittleness ntawm cov yeeb nkab thiab xyuas kom zoo khoov. Peb tuaj yeem muab cov kav dej khoov ERW uas ua tau raws li cov neeg siv khoom kos duab thiab kev xav tau.
3. Dab tsi yog qhov txawv ntawm ERW steel kav thiab kauv welded steel kav?
Qhov sib txawv tseem ceeb ntawm ERW steel kav thiab kauv welded steel kav yog nyob rau hauv txoj kev vuam thiab cov qauv: ERW kav yog longitudinally welded (lub weld seam yog parallel mus rau qhov ntev ntawm cov yeeb nkab), ua los ntawm khoov cov hlau sawb rau hauv ib lub tog raj kheej thiab welding lub longitudinal npoo; kauv welded kav yog spirally welded (lub weld seam yog muab kauv raws cov yeeb nkab), ua los ntawm spirally winding lub steel sawb thiab welding lub overlapping npoo. Hais txog kev ua tau zoo: ERW kav dej muaj lub zog ntev ntev, haum rau cov kav dej me me thiab nruab nrab; kauv welded kav muaj kev sib txawv ntawm kev ntxhov siab, haum rau txoj kab uas hla loj thiab tuab - cov kav dej. Nyob rau hauv cov nqe lus ntawm tus nqi: ERW kav dej muaj nqi ntau lawm rau me me thiab nruab nrab txoj kab uas hla, thaum muab kauv welded kav muaj ntau qhov zoo rau txoj kab uas hla loj.
4. Puas yog ERW steel kav yuav tsum tau kuaj ua ntej xa khoom?
Yog lawm, tag nrho ERW steel kav yuav tsum tau kuaj xyuas nruj ua ntej xa zaub mov kom ntseeg tau tias cov khoom ua tau raws li tus qauv thiab cov neeg siv khoom xav tau. Cov khoom siv kuaj muaj xws li: kev tshuaj xyuas zoo li qub, kev tshuaj xyuas qhov ntev, qhov zoo ntawm vuam tsis yog- kev kuaj kev puas tsuaj (ultrasonic, X-ray), kev ntsuas kev ua tau zoo (tensile, dabtsi yog khoov, cuam tshuam), thiab tiv thaiv- kuaj kev ua haujlwm corrosion (rau cov kav dej coated). Tom qab qhov kev xeem tau tsim nyog, peb yuav muab daim ntawv tshaj tawm kev xeem (xws li daim ntawv pov thawj kev soj ntsuam zoo, tsis yog- ntawv qhia txog kev puas tsuaj) rau tus neeg siv khoom, uas tuaj yeem siv rau kev lis kev cai thiab kev lees paub. Yog tias pom cov khoom tsis tsim nyog, lawv yuav rov ua dua lossis muab pov tseg, thiab yuav tsis raug xa tawm.
5. Dab tsi yog daim ntawv thov ntawm ERW steel kav?
ERW steel kav muaj ntau daim ntawv thov, suav nrog ntau qhov chaw xws li: cov dej xa dej thiab cov kav dej (cov dej hauv av, cov dej tawm sab nraum zoov, kev ua liaj ua teb); roj thiab roj tsheb thauj mus los (tsawg- cov roj thiab roj sib sau ua ke thiab kev thauj mus los, cov kav dej hauv nroog); kev tsim kho thiab cov qauv (tsev thav duab, scaffolding, txuas hniav, steel qauv txhawb nqa); mechanical manufacturing (tswj qhov chaw, khoom siv casings); thiab lwm qhov chaw (hluav taws kub- cov kav dej sib ntaus sib tua, cov kav dej cua sov, kev thauj mus los hauv dej). Daim ntawv thov tshwj xeeb yog nyob ntawm qhov kev qhia tshwj xeeb, cov khoom siv, thiab kev tiv thaiv- kev kho corrosion ntawm cov yeeb nkab.
