Q1: Q235B piv rau Q345 Welded yeeb nkab?
A1: Q345 muaj lub zog siab dua (345mpa tawm los vs 235MPA) tab sis xav tau lub zog ntau rau Weld thiab tsis tshua muaj nqi. Q345 muaj cov microalloys (V, NB) rau lub zog tab sis cov nqi 10-20% ntau dua. Q235B yog nyiam rau cov ntawv thov dav dav thaum Q345 haum cov khoom siv hnyav. Weldability zoo dua nrog Q235b vim muaj kev sib npaug ntawm cov roj (0.29 vs 0.40).
Q2: Dab tsi yog qhov sib txawv ntawm Q235B thiab cov kav hlau stainless hlau?
A2: Stainless hlau (piv txwv li, 304) muaj kev tiv thaiv corrosion tsis kam tab sis cov nqi 3-5x ntau dua. Q235B tau zoo dua thermal conductivity tab sis qis dua siab kub lub zog. Stainless yuav tsum muaj cov txheej txheem vuam tshwj xeeb. Q235b yog sib nqus thaum feem ntau stainless tsis yog. Kev xaiv yog nyob ntawm corrosion tseev kom muaj thiab cov kev txwv nyiaj txiag.
Q3: Thaum yuav tsum Q235b yuav siv hloov ntawm seamless yeeb nkab?
A3: Q235B welded pipe is preferred when: Cost is critical (30-50% cheaper), large diameters (>16") are needed, or moderate pressure requirements exist. Seamless is better for high-pressure (>3000psi), kev mob hnyav, lossis cov kev pab kub heev uas weld tsis xws luag tuaj yeem ua kev puas tsuaj.
Q4: Yuav Piv Rau Cov Kav Pipes Yas Zoo Li Pvc?
A4: PVC yog sib dua, cov ntaub ntawv pov thawj corrosion thiab pheej yig dua rau kev ua diamet me me tab sis muaj qis dua qhov kub) thiab UV tsis kam. Q235B cuam tshuam cov kev ntsuas siab dua / qhov kub thiab txias tab sis xav tau kev tiv thaiv corrosion. PVC zoo dua rau kev thauj khoom thaum Q235B suits cov ntawv thov.
Q5: Dab tsi yog qhov zoo ntawm Q235b Hla Cast Hlau Kave?
A5: Q235B muab: Qhov kev sib zog ntau dua-rau-hnyav piv, cuam tshuam zoo dua, yooj yim dua vuam / fineration, thiab smoother interior nyob rau kev txhim kho ntws. Nrov hlau muaj kev co damping thiab corrosion tsis kam nyob rau qee qhov chaw ib puag ncig tab sis yog nkig thiab nyuaj rau hloov kho tom qab kev teeb tsa.
