Design & Manufacture confirm to API 602 / ISO 15761
End Connection Confirm to: Socket weld Standard: ASME B16.11 / Screwed end standard: ASME B1 20.1 / Butt-weld standard: ASME 816.25 / Flange End Standard: ASME 816.5 / Face to Face standard:·ASME 816.1O I mfg.