Tianjin upright cause special steel sale limited company main materialquality 1. Cr5Mo (STFA25 STPA25 STBA25 T5 P5) 2. 15CrMo (STFA22 STPA22STBA22 T12 P12) 3. 1.25Cr0.5Mo (STFA23 STPA23 STBA23 STBA23 T11 P11A213 A335) 4. Cr9Mo (STFA26 STPA26 STBA26...
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