JINAN ZHONGBEN STEEL PIPE CO.,LTD is a manufacturing factory,which specialized in producting steel pipe.our main product is carbon steel (A106GR.B,A53GR.B,API 5L GR.B...),the diameter is from 1/2"-24",21mm-610mm,and all kinds of wall thickness,the length is 6-12m,we can make it as thecutomer's requirement. we sincerely hope that we can establish a good business relationship and cooperation in near future.