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we are a big manuafacturer and exporter of seamless carbon/alloys steel pipe in china and especialloy specialized in processing the big outer diameter of carbon/alloy seamless steel pipes, such as ASTM A53/A53M-04, A106/A106M-04a, A135-01, A179/A179M-90a(2001), A192/A184M-01, A210/A210M-02, A252-98(2002), A500-03a, A795/A795M-04, A105/A105M-03
seamless steel pipe
