|Additional Information||The American Society of Mechanical Engineers, American Petroleum Institute, Germanischer Lioyd, DET Norske Veritas, American Bureau Shipping, Nippon Kaiji Kyokai, Korea Electric Power Industry Code, Alberta Boilers safety Association|
|Tube O.D. (mm)||20.00|
|l 1 (mm)||20.50|
|T U(Unified)||1 1/16-12 UNF-2A|
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