Q690C H profile steel tuaj yeem ua kom nws lub zog siab, zoo weldability, zoo heev toughness thiab qaug zog tsis kam, thiab yog dav siv nyob rau hauv txuas hniav, tsev, kis tau tus yees thiab lwm yam teb. Tib lub sijhawm, Q690C H profile steel kuj yog ib puag ncig zoo thiab ua raws li lub teb chaws ib puag ncig cov qauv, qhia txog lub tuam txhab tseem ceeb ntawm kev tiv thaiv ib puag ncig.
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