1.Dab tsi yog cov kev kho deg rau Q235B steel kav?
Teb: Cov kev kho mob feem ntau muaj xws li galvanizing, pleev xim, los yog txheej los txhim kho corrosion kuj thiab zoo li.
2.Dab tsi yog qhov kev kho deg rau 20 # steel kav?
Teb: Kev kho mob xws li phosphating, blackening, los yog chrome plating yog siv los txhim kho corrosion kuj thiab nto hardness.
3.Dab tsi yog txoj kev kuaj rau Q235B steel kav?
Teb: Kev ntsuam xyuas suav nrog kev ntsuas tensile, kev sim cuam tshuam, kuaj hardness, kuaj ultrasonic, thiab kuaj hydrostatic.
4.Dab tsi yog txoj kev sim rau 20 # steel kav?
Teb: Cov kev sim tshuaj muaj xws li tshuaj ntsuam xyuas, ntsuas tensile, kuaj qhov cuam tshuam, tsis yog - kuaj kev puas tsuaj (UT lossis RT), thiab kev ntsuas siab.
5.Q235B thiab 20# steel puas tuaj yeem kho tau? Cov teebmeem yog dab tsi?
Teb: Q235B feem ntau yog siv los ua- dov tab sis tuaj yeem ua tau zoo. 20# steel tuaj yeem kho cua sov (xws li, annealing, normalizing, quenching thiab tempering) los txhim kho lub zog thiab tawv.
