Company Description
He BeiYongHui Steel PipeCo.,Ltd stee pipe company in china we mainly produce seamless steelpipe,carbon steel pipe oilcasing steel pipe and so on the standard are GB/T8162-1999 GB/T8163-1999GB3087-1999 GB5310-1995 API5L ASTM A106 ASTM A53 DIN17175 DIN1629