Cov kabmob steel npas muaj ntau Qib. Raws li cov npe qeb hauv lub teb chaws tus qauv GB / T308-2002, lawv muab faib ua G5, G10, G16, G28, G40, G60, G100, G200, G500, G1000, thiab lwm yam. G yog thawj tsab ntawv ntawm Qib Askiv , thiab cov lej hauv qab no muaj ntau qib sib txawv. Tus me loog ...
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