Q1: Qhov kev tiv thaiv nto (txheej txheem) feem ntau yog siv li cas?
A:Rau cov kav dej faus, sab nraud Fusion-Tshooj Epoxy (FBE) txheej txheem yog tus qauv. 3- Txheej Polyethylene (3LPE) lossis Polypropylene (3LPP) yog siv rau cov av hnyav dua. Sab hauv, lawv tuaj yeem liab qab, cement{5}}kab (rau dej), lossis muaj FBE sab hauv. Rau atmospheric raug, xim tshuab yog siv.
Q2: Yuav ua li cas ntsuas hydrostatic ntsuas siab?
A:Lub zeb hydrostatic test siab yog xam los ntawm cov qauv qhia hauv API 5L / ISO 3183: P=2St / D, qhov twg S yog qhov kev ntxhov siab (ib feem ntawm SMYS, feem ntau 80-95% rau qhov kev xeem), t yog phab ntsa thickness, thiab D yog sab nraud txoj kab uas hla. Nws txheeb xyuas qhov muaj peev xwm muaj peev xwm yam tsis muaj cov yeeb nkab.
Q3: Dab tsi yog cov khoom siv tsis zoo los kuaj xyuas hauv cov kav dej no?
A:Feem ntau muaj xws li laminations (los ntawm cov slab / phaj), tsis muaj fusion los yog tawg nyob rau hauv ERW seams, undercut los yog porosity nyob rau hauv SAW seams, nto khawb los yog gouges, thiab tawm - ntawm - kam rau ua qhov ntev (inch, phab ntsa thickness, ovality).
Q4: Cov pa roj carbon sib npaug (CE) cuam tshuam li cas rau qhov weldability ntawm X42?
A:X42 PSL 1 feem ntau muaj qhov sib npaug Carbon qis (feem ntau suav raws li IIW CE lossis PCM), feem ntau qis dua 0.36%. Qhov no qhia tau hais tias weldability zoo heev, tso cai rau vuam yam tsis muaj pre- cua sov nyob rau hauv feem ntau, uas txo cov nqi fabrication thiab complexity.
Q5: Dab tsi yog qhov tseem ceeb ntawm "Kev Xa Khoom" rau cov yeeb nkab?
A:Kev xa khoom (xws li, raws li - dov, normalized, normalized-rolled) txhais cov thermal- kho tshuab. Feem ntau Gr B/X42 PSL 1 yog muab nyob rau hauv raws li - dov los yog raws li - tsim mob. PSL 2 los yog cov ntawv thov tshwj xeeb yuav xav tau cov xwm txheej zoo los kho cov qauv ntawm cov nplej thiab ua kom cov khoom siv zoo ib yam, tshwj xeeb tshaj yog rau cov kav dej SAW.
