ALLOY STEEL PIPE/TUBE(ASTM A335, ASTM A213) for PETROLEUM, CHEMICAL AND ELECTRIC POWER INDUSTRIES: Cr5Mo(STFA25 STPA25 STBA25 T5 P5) T91(P91) 15CrMo(STFA22 STPA22 STBA22 T12 P12) 1.25Cr0.5Mo(STFA23 STPA23 STBA23 T11 P11) Cr9Mo(STFA26 STPA26 STBA26 T9 P9) 12Cr1MoV 12Cr2Mo(10CrMo910 T22 P22 12Cr2MoWTiB(R102)