Shanghai Yichen Industrial Co., LTD. Was established in 1998. we now has become one of the leading manufactures and exporters in the field of seamless steel pipes in China. We mainly supply: Petroleum pipes, Oil casing pipes, Gas pipes, Line pipes, Structure pipes, water pipes and other steel tube products. Products range from 6mm to 630mm OD and 1mm to 50mm WT.We have passed the ISO9001:2000 Quality Management Certification, API 5CT&5L certification and CPD certification (CPD 89/106/EEC) as well.