10#,20#,Q345/16MN X42/X52/X65
ASTM A53 GR.B/ASTM A106 GR.B/API 5L GR.B
No. 904, International Trade Center, no. 39, Nanjing Road, Heping District, Tianjin, China
postcode: 300041
Tel: +86-22-59661311 Fax: +86-22-59661312
Emial:boss@imetalchina.com
www.imetalcn.com