... pipe 2.Variety sizes ASTM A179, A192, DIN17175, BS3059, A334 Gr.6 Seamless steel pipe:ASTM A179, A192, DIN17175, BS3059, A334 ... Gr.6 Certificate:ISO9001-2000,PED, API, TS16949; Mill Test Certificate ... sight Seamless steel pipe:ASTM A179, A192, DIN17175, BS3059, A334 Gr.6