Seamless API Pipe Seamless steel line pipe, steel grade X52. Size from 1/ 2" to 38" . Wall thickness we can do are SCH20, SCH40, SCHSTD, SCH60, SCH80, SCHXS, SCH160, SCHXXS if u have any needs, pls contact msn: PRCsteelpipe@hotmail.com skype:PRCsteelpipe@skype.com e-mail:PRCsteelpipe66@ gmail.com