we are the leading manufacturer of seamless pipes . TypeSeamless Steel PipeBrand NameTMSSPStandardAPI5L ,API 5CT ,ASTM A53,EN10217, ... ASTM A106 GR A/B, ASTM A53A, ASTM A53B, DIN 17175 ST35.8, DIN 17175, ST45.8, Q235, Q345, X42-X80Outside diametersTube1.9~4 ... processes comply to ISO9001:2000. Regards,Zoe LeeTianJin Jingtong Seamless Steel Pipe Co., LtdMob:+86-15122781662Tel:+86-22-88332761Fax:+ ...