1. Q: Cov qib puas txiav txim siab qhov tso cai ntawm cov yeeb nkab?
A: Indirectly, yog. Kev ntsuas siab (xws li PN lossis Chav Kawm) yog xam raws li cov khoom siv tau tso cai rau kev ntxhov siab (muab los ntawm qib yield / tensile lub zog), phab ntsa thickness (Tshooj), thiab txoj kab uas hla.
2. Q: Dab tsi yog "Carbon Equivalent" (CE) thiab vim li cas nws tseem ceeb rau cov qib yeeb nkab?
A: Carbon Equivalent yog tus nqi suav uas suav nrog cov teebmeem ntawm carbon thiab lwm yam alloying ntsiab ntawm hardness thiab weldability. Cov qauv zoo li API 5L PSL2 teeb tsa qhov siab tshaj plaws CE txwv kom ntseeg tau zoo weldability, tshwj xeeb tshaj yog rau qib siab - zog.
3. Q: Kev kho cua sov li qub yog dab tsi?
A: Nws yog cov txheej txheem uas cov hlau tau rhuab saum nws qhov kub thiab txias thiab tom qab ntawd txias hauv huab cua. Nws refines lub grain qauv thiab txhim kho mechanical zog. Ntau qib, zoo li API 5L PSL2 qib siab dua X60, feem ntau xav tau kev ua kom zoo.
4. Q: Cov qib seamless yeeb nkab puas tuaj yeem siv rau kev pabcuam corrosive?
A: Cov pa roj carbon steel seamless kav tsis muaj kev tiv thaiv corrosion. Rau corrosive ib puag ncig, qib nrog ntxiv corrosion-cov khoom tiv thaiv (xws li chromium hauv alloy steels ASTM A335) lossis cov khoom sib txawv kiag li (stainless steel, xws li ASTM A312) yog siv.
5. Q: Dab tsi tseem ceeb yuav tsum tau txiav txim siab thaum xaiv cov qib seamless yeeb nkab?
A: Cov ntsiab lus tseem ceeb suav nrog: Tsim kev siab thiab kub, kev pabcuam ib puag ncig (corrosivity, tsis tshua muaj kub), yuav tsum muaj zog txhua yam, weldability, ua raws li kev lag luam lossis qhov project specifications (xws li ASTM, API, EN), thiab tus nqi.
