Design and Manufacture: API 608,API 6D,BS5351
Face to face(end to end): ANSI B16.10,API 6D
Flanged connection:2~~24~to ANSI B16.5
Fire-safe: API 607,API 6FA
Butt welded end: ANSI B16.25
Test and inspection: API 598,API 6D
Design standard can according to ANSI, DIN, JIS etc.
Inspection and testing: API 598