1. ** Dab tsi yog muaj yeeb nkab? **
"Qib 3 Yeeb Nkab" feem ntau yog hais txog ib qib lus tshwj xeeb hauv tus qauv kav. Hauv qhov tshwm sim ** API 5L ** Tus qauv rau kab yeeb nkab, qib qib A25 lossis qib kawm qub (uas qee zaum tau hu ua "Qib 3" nyob rau hauv cov lus piav qhia qub). Txawm li cas los xij, ** Qib 3 tsis yog qauv tsim qauv hauv API niaj hnub 5l **. Nws yuav xa mus rau ib qib tshwj xeeb hauv lwm cov qauv (zoo li AQU3, qee zaum qhov twg muaj txiaj ntsig zoo rau "Qib 3"), tab sis nws lub ntsiab lus nyob ntawm tus qauv tshwj xeeb.
2. ** Dab tsi yog cov yeeb nkab? **
Zoo ib yam li Qib 3, "Qib 6 Yeeb Nkab" yog ** tsis yog qauv tsim hauv cov kev siv tshwj xeeb xws li API 5L lossis ASTM A53 / A106 **. Cov kev kawm feem ntau yog ua raws cov ntawv (B, X42, X52, x52, lej uas qhia tawm lub zog muaj zog zog zog (piv txwv li, 42, 42 rau ntau txhiab tus psi). "Qib 6" tuaj yeem xa mus rau ib qib tshwj xeeb heev hauv kev tshaj tawm hauv cov ntsiab lus ntawm cov ntsiab lus thoob ntiaj teb.
3. ** Peb hom cov yeeb nkab yog dab tsi? **
Lub peb zaug ob zaug rau kev tsim khoom ** ntawm cov yeeb nkab steel yog:
* ** SEAMLESS YEEB (SMLS): ** Ua los ntawm tho ib lub ntsej muag ntawm cov hlau ua lub raj uas tsis muaj lub raj welded. Muab lub zog siab thiab kev sib dhos.
* ** THAWJ KUB HLAU WELDED YEEB (ERW): ** Tsim los ntawm Dov Hlau Sheet / Chev thiab Vuam Seam Ntev Siv Hluav Taws Xob Ntev Siv Hluav Taws Xob Ntev. Ntau rau qis rau nruab nrab daim ntaub ntawv thov.
* ** FUSION WELDED YEEB (piv txwv, pom): ** Xws li hom kev ua arciled arc welded (pom) yeeb nkab. Tsim los ntawm dabtsi yog khoov phaj / tiab thiab vuam cov leeg (speitudinal lossis muab kauv) siv ib qho txheej txheem sau ua ke nrog cov khoom siv flux. Siv rau txoj kab uas ua diamet cov loj thiab siab dua.
4. ** Dab tsi yog qeb 3 yeeb nkab? **
"Qeb 3 Yeeb Nkab" muaj ob qho kev txhais lus thawj zaug:
* ** ASME B31.3 Txheej Txheem Piping: ** Hais txog Cov Kev Pab Dej Pab D, ib txwm, lossis ** qeb m ** nyob rau hauv tus qauv. ** Tsis muaj "qeb 3" hauv B31.3 ** ** **. Pawg yog D, M, ib txwm muaj, thiab siab siab.
* ** Kev Raug Yeeb Nkab (piv txwv li, ASME B16.34 "Pawg III" yuav qhia tau cov khoom siv rau kev ntsuas siab dua thiab ntsuas kub piv rau qeb I lossis II. Cov yeeb nkab nws tus kheej tsis feem ntau hu ua "qeb 3", tab sis cov khoom siv tsim rau cov yeeb nkab thicker (xws li XXS 160 lossis XXS) poob hauv ntau pawg.
5. ** Dab tsi yog ntau yam 3 yeeb nkab? **
"Ntau yam kua yeeb" yog hais txog qhov tshwj xeeb ** kev tsim nyog ntev **. Cov yeeb nkab steel feem ntau yog muab rau cov qauv sib xws ntev lossis muaj kev tshwj xeeb:
* ** TSHOOJ 1: ** Cov luv luv ntev (feem ntau 16-20 ko taw).
* ** HEEV 2: ** Cov qauv ntev (feem ntau 30-40 ko taw, feem ntau).
* ** TSHOOJ 3: ** Ntev ntev (feem ntau 50-60 ko taw lossis ntev dua). Ntau yam 3 cov yeeb nkab muaj tsawg dua li ntau 2 thiab feem ntau siv rau cov ntawv thov tshwj xeeb xws li cov raj xa dej ntev kom txo cov ntawv pov tseg. Nws muaj ** tib phab ntsa thicknesses ** (cov sijhawm) raws li ntau 1 lossis 2 yeeb nkab ntawm tib qhov loj me. Qhov "ntau qhov kev tsim qauv hais txog * tsuas yog * rau qhov ntev.
