Ningbo New-era Steel Tube Co.,ltd is a Ningbo New-Era Steel Tube Co.,Ltd,one of the best seamless steel tube products manufacturers and exporters in china.And I am Ken,working in one of its subsidiary companyNingbo New Hailong Imp.& Exp.Co.,Ltd.Some of our information is as below:O.D.5mm720.3mm.W.T.0.5mm70.0mm.And the Standard we could supply is as below:ASTM.A53,A106,A161,A179,A210,A519;DIN 17175,DIN1629,DIN2391,DIN2393; JISG 3444,JISG3445,JISG3452,JISG3454,JISG3460,JISG3461,JISG3464;EN10305,EN10216,API 5L,API 5CT.We export large quantity to many countries because of our high quality and the price is very competetive.Our manufacutres have owned the ISO 9001:2000 international certificate.If you need some further information,please contact and wish to cooperate.Any inquiry within our product range,please feel free to contact me.Best regards. Yours Sincerely Mr.Ken (China)Ningbo New-Era Steel Tube Co.,LtdTel:+86-0574-87336086 Fax:+86-0574-87715158