Q1: Dab tsi NDT txoj kev koj siv rau seamless kav?
A:Peb sivUltrasonic Testing (UT), Sib Nqus Flux Leakage (MFL), thiab Eddy Tam Sim No (ET). Peb cov cuab yeej tseem ceeb yog tuaj txawv teb chaws, muaj peev xwm txheeb xyuas qhov ntev, kev hloov pauv tsis xws luag, thiab lamination -8.
Q2: Puas yog kev sim hydrostatic yuav tsum tau ua rau ASTM A106 yeeb nkab?
A:Yog lawm. Txhua cov yeeb nkab yuav tsum xeem dhau hydrostatic test lossis lwm NDT (piv txwv li, UT nrog rau kev lees paub). Kev ntsuas siab yog xam ib qho qauv hauv A106 / A106M -6-8.
Q3: Dab tsi yog NACE MR0175 / ISO 15156 ua raws?
A:Nws txhais tau hais tias cov yeeb nkab haum rauKev pabcuam qaub (H₂S ib puag ncig). Yuav tsum tau ntxiv hardness tswj thiab Sulfide Stress Cracking (SSC) kuj. Feem ntau hauv API 5CT/5L PSL2 qib -10.
Q4: Koj puas muab PMI kuaj?
A:Yog lawm. Kev txheeb xyuas cov khoom zoo (PMI) muaj nyob rau hauv kev thov los txheeb xyuas cov tshuaj muaj pes tsawg leeg, tshwj xeeb tshaj yog rau cov ntsiab lus alloy hauv qis- alloy steels (xws li A335 P11 / P22) -10.
Q5: Qhov kev ntsuam xyuas flattening yog dab tsi?
A:Lub nplhaib qauv yog flattened los xyuas kom meej ductility thiab kev ywj pheej ntawm cov kab nrib pleb. Yuav tsum tau rau boiler raj (A192, A210) thiab tej yam ntxwv qib -7.
