Our company, WUXI DEXIN STEEL TUBE CO., LTD, can manufacture and process seamless steel pipes for all kinds of large outside diameter whose dimension is less than 1200mm and thickness less than 80mm. We are professional in manufacturing Large O.D. seamless steel pipe( Hot-Finished or Hot-Expanding). Our products ranges are as follows: CARBON STEEL PIPE/TUBE: ASTM A106B, A106C, API5L LINE PIPE, ASTM A333 Gr.1/6, A53B. ST52 ALLOY STEEL PIPE/TUBE FOR PETROLEUM, CHEMICAL AND ELECTRIC POWER INDUSTRIES: 1.Cr5Mo (STFA25 STPA25 STBA25 T5 P5 ) 2. 15CrMo (STFA22 STPA22 STBA22 T12 P12 ) 3. 1.25Cr0.5Mo (STFA23 STPA23 STBA23 T11 P11 ) 4. Cr9Mo (STFA26 STPA26 STBA26 T9 P9 ) 5. 12Cr1MoV 6. 12Cr2Mo (10CrMo910 T22 P22 ) 7. T91 ( P91 ) Gas Cylinder steel pipe/tube ( 34CrMo4,35 CrMo)