3Cr13 steel sib npaug yog dab tsi?
SUS329J1 vs SUS329J3L duplex stainless hlau: Dab tsi yog qhov txawv?
Cov khoom siv 1.4462 sib npaug li cas?
Khoom siv 1.4477 sib npaug
Qhov sib txawv ntawm 304, 304L, 304n thiab 304H
Dab tsi yog qhov sib txawv ntawm 420j1 thiab 420j2?
Qhov sib txawv ntawm 1.4021 thiab 1.4401 stainless hlau
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X2033 cov khoom siv yog dab tsi?